Patent Publication Number: US-10788701-B2

Title: Light emitting device and display device including the same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a Continuation Application of U.S. patent application Ser. No. 13/347,899 filed Jan. 11, 2012, which claims priority under 35 U.S.C. § 119 to Korean Application No. 10-2011-0040010 filed on Apr. 28, 2011, whose entire disclosures are hereby incorporated by reference. 
    
    
     TECHNICAL FIELD 
     Embodiments relate to a light emitting device and a display device including the same. 
     BACKGROUND 
     A light emitting device, for example, a light emitting diode is a type of semiconductor device that can convert an electric energy into a light has been spotlighted as next generation light source, replacing a conventional fluorescent lamp and an incandescent lamp. 
     The light emitting diode generating a light by using a semiconductor element may consume relatively small electricity, compared with the incandescent lamp generating a light by heating tungsten or the fluorescent lamp generating by colliding an ultraviolet ray generated by a high voltage discharge with a phosphor. 
     In addition, the light emitting diode generates the light by using a potential difference of semiconductor elements may have a relatively long usage life and a rapid response, with an eco-friendly characteristic. 
     As a result, a lot of developments and researches have been in progress to replace the conventional lighting source with the light emitting diode. Usage of such the light emitting diode has been increasing as lighting source for a lighting device, for example, a variety of lamps, a liquid crystal display and an electronic display and streetlamp that are used outdoor. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the principle of the disclosure. 
         FIG. 1  is a perspective view illustrating a light emitting device package according to an embodiment; 
         FIG. 2  is a bottom view illustrating the light emitting device package shown in  FIG. 1 ; 
         FIG. 3  is a first side view illustrating the light emitting device package shown in  FIG. 1 ; 
         FIG. 4  is a second side view illustrating the light emitting device package shown in  FIG. 1 ; 
         FIG. 5  is a third side view illustrating the light emitting device package shown in  FIG. 1 ; 
         FIG. 6  is a fourth side view illustrating the light emitting device package shown in  FIG. 1 ; 
         FIG. 7  is a plane view illustrating the light emitting device package shown in  FIG. 1 ; 
         FIG. 8  is a sectional view illustrating the light emitting device package shown in  FIG. 1  along AA′; 
         FIG. 9  is a sectional view illustrating the light emitting device package shown in  FIG. 1  along BB′; 
         FIG. 10  is a diagram illustrating a first reflection cup, a second reflection cup, a first connection pad and a second connection pad; 
         FIG. 11  is a diagram illustrating serial connection according to an embodiment between the light emitting devices provided in the light emitting device package; 
         FIG. 12  is a diagram illustrating parallel connection according to the embodiment between the light emitting device provided in the light emitting device; 
         FIG. 13  is a diagram illustrating serial connection according to another embodiment between the light emitting devices provided in a light emitting device package; 
         FIG. 14  is a diagram illustrating a light emitting device package according to a further embodiment; 
         FIG. 15  is a diagram illustrating a light emitting device package according to a still further embodiment; 
         FIG. 16  is a diagram illustrating a light emitting device package according to a still further embodiment; 
         FIG. 17  is a diagram illustrating a light emitting device package according to a still further embodiment; 
         FIG. 18  is a diagram illustrating a light emitting device package according to a still further embodiment; 
         FIG. 19  is a sectional view illustrating recesses shown in  FIGS. 14, 15, 18 and 20 ; 
         FIG. 20  is a diagram illustrating a light emitting device package according to a still further embodiment; 
         FIG. 21  is a sectional view illustrating a first light emitting device and a second light emitting device according to the embodiment shown in  FIG. 1 ; 
         FIG. 22  is an exploded perspective view illustrating a lighting device according to an embodiment, including the light emitting device package according to the embodiments; and 
         FIG. 23  is a diagram illustrating a display device according to an embodiment, including the light emitting device package according to the embodiments. 
     
    
    
     DESCRIPTION OF SPECIFIC EMBODIMENTS 
     As follows, exemplary embodiments will be described in reference to the accompanying drawings. It will be understood that when an element is referred to as being ‘on’ or “under” another element, it can be directly on/under the element, and one or more intervening elements may also be present. When an element is referred to as being ‘on’ or ‘under’, ‘under the element’ as well as ‘on the element’ can be included based on the element. 
     The thickness and size of each layer may be exaggerated, emitted or illustrated schematically in the drawings, for explanation and precision. The size of each component part shown in the drawings may not reflect the actual size completely. As follows, a light emitting device package  100 - 1  according to an embodiment will be described in reference to the accompanying drawings. 
       FIG. 1  is a perspective view illustrating a light emitting device package according to an embodiment.  FIG. 2  is a bottom view illustrating the light emitting device package shown in  FIG. 1 .  FIG. 3  is a first side view illustrating the light emitting device package shown in  FIG. 1 .  FIG. 4  is a second side view illustrating the light emitting device package shown in  FIG. 1 .  FIG. 5  is a third side view illustrating the light emitting device package shown in  FIG. 1 .  FIG. 6  is a fourth side view illustrating the light emitting device package shown in  FIG. 1 .  FIG. 7  is a plane view illustrating the light emitting device package shown in  FIG. 1 .  FIG. 8  is a sectional view illustrating the light emitting device package shown in  FIG. 1  along AA′.  FIG. 9  is a sectional view illustrating the light emitting device package shown in  FIG. 1  along BB′. 
     In reference to  FIGS. 1 to 9 , the light emitting device package  100  may include a body  110 , a first reflection cup  122 , a second reflection cup  124 , a first connection pad  126 , a second connection pad  128 , a first light emitting device  132 , a second light emitting device  134 , a zenor diode  150 , wires  151  to  159  and a blocking partition wall  680 . 
     The body may be formed of at least one of resin such as polyphthalamide (PPA), silicon (Si), metal, photo sensitive glass (PSG), sapphire (Al203) and a printed circuit board (PCB). 
     The body  110  may be formed of a conductor having conductivity. If the body  110  is formed of the conductor having the conductivity, an insulative layer (not shown) may be formed on a surface of the body  110 , to prevent the body  110  from being electrically short with the first and second reflection cups  122  and  124  and the first and second connection pads  126  and  128 . 
     Seen from above, a shape of a top surface  106  of the body  110  may be various such as triangular, polygonal and circular based on usage and design of the light emitting device package  100 . 
     For example, the light emitting device package  100  shown in  FIG. 1  may be applicable to an edge type backlight unit (BLU). If the light emitting device package  100  shown in  FIG. 1  is applied to a portable flashlight or home lighting, the size of the body  110  may be changed to enable the body  110  to be mounted in the portable flashlight or the home lighting smoothly. 
     The body  110  may include a top surface  103  and a reflection wall  102  extended upward from the top surface  103  thereof. 
     In other words, the body  110  may include a cavity  105  (hereinafter, referenced to as “body cavity”) configured of a side surface  102  and a bottom  103 , with an open top. Here, the side surface  102  of the cavity  105  may be corresponding to the reflection wall  102  of the body  110  and the bottom  103  of the cavity  105  may be corresponding to the top surface  103  of the body  110 . 
     The body cavity  105  may be cup-shaped or concave container-shaped and the side surface  102  of the cavity  105  may be perpendicular or inclined with respect to the bottom  103 . 
     The shape of the body cavity  105  seen from above may be circular, oval or polygonal (for example, rectangular). A corner of the body cavity  105  may be rounded. The shape of the body cavity  105  shown in  FIG. 1  seen from above may be octagonal. The side surface  102  of the body cavity  105  may include eight surfaces and areas of first surfaces  301  to  304  may be smaller than areas of second surfaces  311  to  314 . For example, the first surfaces  301  to  304  may be side surfaces of the body cavity  105 , in opposite to corners  321  to  324  of the body  110 . The second surfaces  311  to  314  may be surfaces positioned between neighboring two of the first surfaces  310  to  304 . 
     Surfaces facing each other may have the same shape and the same area out of the first surfaces  301  to  304  and the second surfaces  411  to  314 . Some areas of the facing surfaces may be curved. In another embodiment, a side surface  102  of a body cavity  105  may have eight surfaces or less or eight surfaces or more. Here, some areas of facing surfaces may be curved. 
     The first reflection cup  122  and the second reflection cup  124  may be spaced apart a predetermined distance from each other on the top surface  103  of the body  110 . for example, the first reflection cup  122  and the second reflection cup  124  may be disposed in the bottom  103  of the body cavity  105 , spaced apart a proper distance. The first reflection cup  122  may be recessed from the bottom  103  of the body cavity  105 , with an open top. 
     The first reflection cup  122  may include a first bottom  122 - 1 , a first side surface  122 - 2  and a first top surface  122 - 3 . The first side surface  122 - 2  is disposed between the first bottom  122 - 2  and the first top surface  122 - 2 . The second reflection cup  124  may include a second bottom  124 - 1 , a second side surface  124 - 2  and a second top surface  124 - 2 . The second side surface  124 - 2  may be disposed between the second bottom  124 - 1  and the second top surface  124 - 2 . 
     The bottom  103  of the body cavity  105  may include a first cavity  162  having an open top, a side surface and a bottom. The first reflection cup  122  may be disposed in the first cavity  162 . 
     The second reflection cup  124  spaced apart a predetermined distance from the first cavity may be recessed from the bottom  103  of the body cavity  105 , with an open top. For example, the bottom  103  of the body cavity  105  may have a second cavity  164  having an open top, a side surface and a bottom. The second reflection cup  124  may be disposed in the second cavity  164 . At this time, the second cavity  164  may be spaced apart a predetermined distance from the first cavity  162 . 
     Between the first reflection cup  122  and the second reflection cup  124  may be positioned a predetermined area  103 - 1  of the bottom  103  of the body cavity  105 . The first reflection cup  122  and the second reflection cup  124  may be separately distant from each other because of the area  103 - 1  of the bottom  103 . 
     It can be said that the body cavity  105  and the first reflection cup  122  and the body cavity  105  and the second reflection cup  124  may form a double-cavity structure. Here, the double cavity structure may refer to the structure that the first cavity  162  of the first reflection cup  122  and the second cavity  164  of the second reflection cup  124  are provided in the bottom  103  of the body cavity  105 . 
     The first and second cavities  162  and  164  seen from above may be cup-shaped or concave container-shaped. Each side surface of them may be perpendicular or inclined with respect to each bottom of them. 
     At least predetermined area possessed by each of the first and second reflection cups  122  and  124  may be exposed outside the body  110 , passing through the body  110 . Heat emission efficiency may be improved to emit heat generated from the first and second light emitting devices  132  and  134  outside the body  110 , because the area of each of the first and second reflection cups  122  and  124  is exposed outside the body  110 . 
       FIG. 10  illustrates the first reflection cup  122 , the second reflection cup  124 , the first connection pad  126  and the second connection pad  128 . 
     In reference to  FIG. 10 , the first reflection cup  122  may include a first lead frame  142  partially exposed via the first side surface  210  of the body  110 . The first lead  142  may include a first bent portion  512  bent from the top surface  122 - 3  of the first reflection cut  122  toward a back surface  107  of the body  110  and a horizontal portion  514  connected with the bent portion  512  in parallel with the bottom of the first reflection cup  122 , with being partially exposed from the first side surface  210  or the back surface  107  of the body  110 . The first reflection cup  122  and the first lead frame  142  may be formed of the same material and integrally formed with each other. 
     The second reflection cup  124  may include a second lead frame  144  partially exposed via the second side surface  220  of the body  110 . The second reflection cup  124  and the second lead frame  144  may be formed of the same material and integrally formed with each other. 
     The second lead frame  144  may include a second bent portion  522  bend from the top surface  124 - 3  of the second reflection cup  124  toward the back surface  107  of the body  110  and a second horizontal portion  524  connected with the second bent portion  522 , in horizontal with the bottom of the second reflection cup  124 , with partially exposed to the second side surface  220  and the back surface  107  of the body  110 . At least one hole  501  and  503  may be provided in each of the first and second bend portions  512  and  522 . 
     The first reflection cup  122  may have a back surface  202  exposedly projected from the back surface  107  of the body  110 , passing through the body  110 . An end of the first reflection cup 1   122  may be projected from the first side surface  210  via the first side surface  210  of the body, to be exposed outside the body  110 . 
     The second reflection cup  124  may have a back surface  204  exposedly projected from the back surface  107  of the body, passing through the body  110 . Also, an end  144  of the second reflection cup  124  may be projected from the second side surface  210  via the second side surface  220  of the body, to be exposed outside the body  110 . The exposed ends  142  and  144  of the first and second reflection cup  122   124  may be formed in a variety shapes such as a rectangle, a square or a U-like shape. 
     The ends  142  and  144  and the bottom surfaces  202  and  204  of the first and second reflection cups  122  and  124  may be exposed to the outside of the body  110 . Because of that, the heat generated from the first and second light emitting devices  132  and  34  may be emitted outside the body  110  efficiently according to this embodiment. 
     The first connection pad  126  may be disposed on the top surface of the body  110 , spaced apart a predetermined distance from the first and second reflection cups  122  and  124 . The second connection pad  128  may be disposed on the top surface of the body  110 , spaced apart a predetermined distance from the first and second reflection cups  122  and  124  and the first connection pad  126 . 
     For example, the first connection pad  126  and the second connection pad  128  may be disposed in the bottom  103  of the body cavity  105 , spaced apart a predetermined distance from each other. The bottom  103  of the body cavity  105  may be disposed between the first connection pad  126  and the first reflection cup  122 , between the first connection pad  126  and the second reflection cup  124  and between the first connection pad  126  and the second connection pad  128 . 
     The first connection pad  126  may be adjacent to one of the facing side surfaces  102  of the second connection pad  128  and the second connection pad  128  may be adjacent to the other one of the facing side surfaces  102  of the body cavity  105 . 
     For example, the first connection pad  126  may be disposed adjacent to one  311  of the facing first surfaces  311  and  313  or  312  and  314  facing each other, and the second connection pad  128  may be disposed adjacent to the other one  313  of the facing first surfaces  311  and  313  or  312  and  314 . For example, the center of the first connection pad  126  may be aligned with a center of the one  311  of the facing first surfaces. The center of the second connection pad  128  may be aligned with a center of the other one  313  of the facing first surfaces. 
     The first connection pad  126  and the second connection pad  128  may be disposed in the bottom  103  of the body cavity  105  in symmetry. The first connection pad  126  and the second connection pad  128  may be aligned in opposite, to face each other. For example, the center of the first connection pad  126  may be aligned with the center of the second connection pad  128 . 
     Alternatively, the first connection pad  126  and the second connection pad  128  may be disposed in bilateral symmetry with respect to a first baseline  410 . The first baseline  410  may be a line connecting each center of the facing first surfaces  312  and  314 . 
     The first connection pad  126  may include a top surface  610  exposedly projected from the bottom of the body cavity  105  and a third lead frame  146  partially exposed via the third side surface  230  of the body  110 . 
     The third lead frame  146  may be connected with the top surface  610  of the first connection pad  126  and it may include a third bent portion  532  and a third horizontal portion  534 . The third bent portion  532  may be bent from the top surface  610  of the first connection pad  126  toward the back surface  107  of the first connection pad  126 . An angle formed by both of the third bent portion  532  and the top surface  610  of the first connection pad  126  may be an acute angle. The third horizontal portion  534  may be connected with the third bent portion  532 , in horizontal with the top surface  610  of the first connection pad  126 , and it may be partially projected from the third side surface  230  and the back surface  107  of the body  110  to be exposed outside. 
     The second connection pad  128  may include a top surface  620  exposedly projected from the bottom of the body cavity  105  and a fourth lead frame  148  partially exposed via the fourth side surface  240  of the body  110 . 
     The fourth lead frame  148  may be connected with the top surface  620  of the second connection pad  128 , and it may include a fourth bent portion  542  and a fourth horizontal portion  544 . The fourth bent portion  542  may be bent from the top surface  620  of the second connection pad  128  toward the back surface  107  of the body  110 . The angle formed by both of the fourth bent portion  542  and the top surface  620  of the second connection pad  128  may be an acute angle. The fourth horizontal portion  544  may be connected with the fourth bent portion  542 , in horizontal with the top surface  620  of the first connection pad  128 , and it may be partially projected from the fourth side surface  240  and the back surface  107  of the body  110 . The first to fourth bent portions  512 ,  522 ,  532  and  544  may be disposed in the body  110 , without being exposed outside the body  110 . 
     The thickness (T31) of the top surface  610  of the first connection pad  126  may be 200 um˜300 um and the thickness (T32) of the third lead frame  146  may be 0.2 mm˜0.3 mm. The thickness (T41) of the top surface  620  provided in the second connection pad  128  may be 200 um˜300 um and the thickness (T42) of the fourth lead frame  148  may be 0.2 mm˜0.3 mm. 
     Each of the first and second connection pads  126  and  128  may be a sufficient area to bond the wires therein. For example, the minimum diameter passing the center of the first connection pad  126  may no more than 0.15 mm or more and the minimum diameter passing the center of the second connection pad  128  may be 0.15 mm or more. 
     At least a predetermined area provided in each of the first and second connection pads  126  and  128  may be exposed outside the body  110 , passing through the body  110 . 
     For example, the end  146  of the first connection pad  126  may be projected from the back side  107  of the body  110 , to be exposed outside the body  110  via the third side surface  230  of the body  110 . The third side surface  230  of the body  110  may be perpendicular to the first side surface  210  and the second side surface  220  of the body  110 . Also, the end  148  of the second connection pad  126  may be exposedly projected from the back surface  107  of the body  110 , to be exposed outside the body  110  via the fourth side surface  240  of the body. The third and fourth side surfaces  230  and  240  of the body  110  may be perpendicular to the first and second side surfaces  210  and  220  of the body  110 . 
     The reflection wall  102  may be positioned around the first and second reflection cups  122  and  124  and the first and second connection pads  126  and  128 , expanded from the top surface  103  of the body  110  upwardly. 
     The first and second reflection cups  122  and  124  and the first and second connection pads  126  and  128  may be formed of a conductive material that can transmit electricity there through. For example, the first and second reflection cups  122  and  124  and the first and second connection pads  126  and  128  may be formed of a metal material, for example, silver, gold, copper and a metal material plated with them. 
     The first and second reflection cups  122  and  124  and the first and second connection pads  126  and  128  may be formed a different material from the material used to form the body  110 , and they may not be integrally formed with the body  110 . The first and second reflection cups  122  and  124  may have the same appearance and the size. Also, the first and second connection pads  126  and  128  may have the same appearance and the size. 
     The zenor diode  150  may be disposed on the first reflection cup  122  or the second reflection cup  124  to improve a withstand voltage of the light emitting device package  100 . For example, the zenor diode  150  may be disposed on the first top surface  122 - 3  of the first reflection cup  122  or the second top surface  124 - 3  of the second reflection cup  124 . In the embodiment shown in  FIG. 1 , the zenor diode  150  may be mounted on the second top surface  124 - 3  of the second reflection cup  124  and the embodiment is not limited thereby. 
     The first light emitting device  132  may be mounted in the first cavity  162  and the second light emitting device  134  may be mounted in the second cavity  164  of the second reflection cup  124 . For example, the first light emitting device  132  may be mounted on the bottom  122 - 1  of the first reflection cup  122  and the second light emitting device  134  may be disposed on the bottom  124 - 1  of the second reflection cup  124 . 
     The first light emitting device  132  may be spaced apart a predetermined distance from the side surface  122 - 2  of the first reflection cup  122  and the second light emitting device  134  may be spaced apart a predetermined distance from the side surface  124 - 2  of the second reflection cup  124 . 
     The first light emitting device  132  and the second light emitting device  134  may be 400 um wide and 1200 um long, and they may be 100 um thick. For example, each chip of the first and second light emitting devices  132  and  134  may be 800 um×400 um, with a thickness of 100 um˜150 um. 
       FIG. 21  is a sectional view illustrating an embodiment of the first light emitting device  132  and the second embodiment  134  shown in  FIG. 1 . In reference to  FIG. 21 , the first light emitting device  132  may include a substrate  20 , a light emitting structure  30 , a conductive layer  40 , a first electrode  12  and a second electrode  14 . The second light emitting device  134  may include a substrate  20 , a light emitting structure  30 , a conductive layer  40 , a third electrode  14  and a fourth electrode  18 . The second light emitting device  134  shown in  FIG. 1  may have the same configuration as the first light emitting device  132 . Polarity of the first electrode  12  may be different from polarity of the second electrode  14  and polarity of the third electrode  16  may be in opposite to polarity of the fourth electrode  18 . 
     The substrate  20  supports the light emitting structure  30 . The substrate  20  may be one of a sapphire substrate, silicon (Si) substrate, zinc oxide (ZnO) substrate and a nitride substrate or it may be a template substrate having at least one of GaN, AlGaN, AlInGaN, SiC, GaP, InP, Ga 2 O 3  and GaAs multi-layered thereon. 
     The light emitting structure  30  may include a first conductivity type semiconductor layer  32 , an active layer  33  and a second conductivity type semiconductor layer  34 . The first conductivity type semiconductor layer  32  may include an n-type semiconductor layer, for example. The n-type semiconductor layer  32  may be configured of a semiconductor material having an empirical formula: An x Al y Ga 1-x-y N (0≤x≤1, 0≤y≤1, 0≤x+y≤1), for example, a material selected from GaN, AlN, AlGaN, InGaN, InN, InAlGaN and AlInN. An n-type dopant such as Si, Ge, Sn, Se and Te may be doped on the n-type semiconductor layer. 
     The active layer  33  may be disposed on the first conductivity type semiconductor layer  32  and it may include a semiconductor layer having an empirical formula: In x Al y Ga 1-x-y N (0≤x≤1, 0≤y≤1, 0≤x+y≤1). The active layer  33  may have at least one of Quantum Wire, Quantum Dot, Single Quantum Well or Multi Quantum Well (MQW) structures. 
     The active layer  33  may generate a light by using an energy generated in a recombination of an electrode and a hole that are provided by the first conductivity type semiconductor layer  32  and the second conductivity type semiconductor layer  34 . The active layer  33  may be a layer capable of generating lights with a variety of wavelengths and the range of wavelengths possessed by the generated lights may not be limited. 
     The second conductivity type semiconductor layer  34  may be disposed on the active layer  33 . The second conductivity type semiconductor layer  34  may be a p-type semiconductor layer, for example. The p-type semiconductor layer may be a semiconductor material having an empirical formula: In x Al y Ga 1-x-y N (0≤x≤1, 0≤y≤1, 0≤x+y≤1), for example, a material selected from GaN, AlN, AlGaN, InN, InAlGaN and AlInN, with a p-type dopant such as Mg, Zn, Ca, Sr and Ba may doped thereon. 
     The second conductivity type semiconductor layer  34 , the active layer  33  and the first conductivity type semiconductor layer  32  may be partially mesa-etched, to partially expose the first conductivity type semiconductor layer  32  such that the light emitting structure  30  may be formed. 
     The conductive layer  40  may be disposed on the second conductivity type semiconductor layer  34 . The conductive layer  40  may reduce full-reflection, with an excellent transmissivity. Because of that, the conductive layer  40  may improve extraction efficiency of the lights emitted from the second conductivity type semiconductor layer  34 . The conductive layer  40  may be formed of a transparent oxide-based material with a high transmissivity with respect to the wavelengths of the lights. For example, the transparent oxide-based may be indium in oxide (INO), tin oxide (TO), indium zinc oxide (IZO) and zinc oxide (ZO). According to another embodiment, the conductive layer  40  may be omitted. 
     The first electrode  12  and the third electrode  16  may be disposed on the exposed region of the first conductivity type semiconductor layer  32  and the second electrode  14  or the fourth electrode  18  may be disposed on the second conductivity type semiconductor layer  34  or the conductive layer  40 . The first electrode  12  and the third electrode  16  may be n-type electrodes, and the second electrode  14  and the fourth electrode  18  may be p-type electrodes. The first to fourth electrodes  12 ,  14 ,  16  and  18  may be formed of a metal material, for example, a material including one or more of Ti, Al, Al alloy, In, Ta, Pd, co, Ni, Si, Ge, Ag, Ag alloy, Au, Hf, Pt, Ru and Au or alloy of them. Also, the first to fourth electrodes  12 ,  14 ,  16  and  18  may be single-layered or multi-layered. 
     The blocking partition wall  680  may be positioned on the top surface  103  of the body  110 , between the first and second reflection cups  122  and  124 . The blocking partition wall  680  may be extended from the top surface  103  of the body  110  upwardly. That is, the blocking partition  680  may be partially disposed on the bottom  103  of the cavity  105 , positioned between the first and second reflection cups  122  and  124 . 
     The reflection wall  102  may be position around the first reflection cup  122 , the second reflection cup  124 , the first connection pad  126  and the second connection pad  128 . Also, the reflection wall  102  may be extended from the top surface  103  of the body  110  upwardly. 
     The blocking partition wall  680  may block the light emitted from the first light emitting device  132  and the light emitted from the second light emitting device  134  from interfering with each other. 
     The height (H4) of the blocking partition wall  680  may be identical to or larger than the height of the wires  152  to  158  bonded in the first and second light emitting devices  132  and  134 . The height (H4) may be identical to or smaller than the height of the side wall  102  of the cavity  105  and the embodiment may not be limited thereby. The height of at least one of the wires  152  to  158  may be larger than the height (H4) of the blocking partition wall  680 . 
     The blocking partition wall  680  may be formed of the same material as the material used to form the body  110  and it may be integrally formed with the body  110 . However, the embodiment may not be limited thereby. The width (W) of the blocking partition wall  680  may be identical to or smaller than the distance (D1) between the first reflection cup  122  and the second reflection cup  124 . 
     According to the embodiment shown in  FIG. 1 , the blocking partition wall  680  may not be positioned on the other region except the region of the bottom  103  of the cavity  105  located between the first reflection cup  122  and the first connection pad  126 , between the first reflection cup  122  and the second connection pad  128 , between the second reflection cup  124  and the first connection pad  126  and between the second reflection cup  124  and the second connection pad  128 . 
     The blocking partition wall  680  may have a variety of appearances projected from the bottom  103  of the cavity  105 . The blocking partition wall  680  shown in  FIG. 1  may be cubic and the embodiment is not limited thereby. It may be realized variably such as polyhedral, hemispherical, and dome-shaped. 
     The wires  152  to  158  may enable the first light emitting device  132 , the second light emitting device  134  and the first connection pad  126  to be electrically connected. The first wire  152  may connect the first light emitting device  122  with the first reflection cup  132  and the second wire  154  may connect the first light emitting device  122  with the first connection pad  126 . The third wire  156  may connect the first connection pad  126  with the second light emitting device  124  and the fourth wire  158  may connect the second light emitting device  124  with the second reflection cup  134 . 
     The fifth wire  159  may electrically connect the zenor diode  150  mounted on the top surface  124 - 1  of the second reflection cup  124  with the first reflection cup  122 . For example, an end of the fifth wire  159  may be bonded with the zenor diode  150  and the other end of the fifth wire  159  may be bonded with the top surface  124 - 3  of the second reflection cup  124 . 
     The first light emitting device  132  and the second light emitting device  134  may generate lights and they are also heat sources that emit heat. The first reflection cup  122  may block the heat generated from the first light emitting device of the heat source from emitting toward the body  110 . The second reflection cup  124  may block the heat generated from the second light emitting device  134  from emitting toward the body  110 . In other words, the first reflection cup  122  and the second reflection cup  124  may thermally separate the first light emitting device  132  and the second light emitting device  134  that are the heat sources from the other component parts. The first and second reflection cups  122  and  124  may block the lights emitted from the first and second light emitting devices  132  and  134  from interfering with each other. 
     Especially, in the embodiment, the first and second reflection cups  122  and  124  may be formed in the bottom  103  of the body  110  and a region of the bottom of the body  110  may be disposed between the first reflection cup  122  and the second reflection cup  124 . Because of that, the thermal separation enabled by the first and second reflection cups  122  and  124  may be improved and the interference of the lights generated from the first and second light emitting devices  132  and  134  may be reduced more. As a result, the embodiment may separate the first light emitting device  132  and the second light emitting device  134  from each other thermally and optically by the first and second light emitting devices  132  and  134 . 
     The first reflection cup  122  and the second reflection cup  124  may be spaced a predetermined distance (D1) from each other and between them may be disposed a predetermined region  103 - 1  of the bottom  103  of the body  110  formed of polyphthalamide. 
     Also, to block the light interference between the light emitting devices  132  and  134  effectively and to improve the reflection efficiency, the first light emitting device  132  may be mounted on the bottom ( 122 - 1 ) of the first reflection cup  122 , spaced apart a predetermined distance from the side surface  122 - 2  of the first reflection cup  122 , and the second light emitting device  134  may be mounted on the bottom  124 - 1  of the second reflection cup  124 , spaced apart a predetermined distance from the side surface  124 - 2  of the second reflection cup  124 . 
     The first connection pad  126  may be spaced apart a predetermined distance (D4) from each of the first and second reflection cups  122  and  124 , and the bottom  103  of the body  110  formed of polyphthalamide may be disposed between the first reflection cup  122  and the second reflection cup  124 . 
     The second connection pad  128  may be spaced apart a predetermined distance from each of the first and second reflection cups  122  and  124 , and the bottom  103  of the body  110  formed of polyphthalamide may be disposed between the first reflection cup  122  and the second reflection cup  124 . 
     A slope angle (θ1) of the side surface of the first reflection cup  122  may be identical to or different from a slope angle of the body cavity  105 . For example, the angle (θ1) between the side surface and the bottom of the first reflection cup  122  may be 90°˜160°. 
     An angle (θ2) between the side surface  102  and the bottom  103  of the body cavity  105  may be 140°˜170°. An upper end of the side surface  102  of the body cavity  105  may be bent. In other words, the body cavity  105  may include a rim portion  804  positioned between a top surface  802  and the bottom  103  of the body  110 , with stepped from the top surface  802  of the body  110  in horizontal with the top surface  802 . 
     The thickness (T11) of the first reflection cup  122  may be 200 um˜300 um. For example, the thickness of each of the bottom  122 - 1 , the side surface  122 - 2  and the top surface  122 - 3  composing the first reflection cup  122  may be 200 um˜300 um. The thickness (T21) of the second reflection cup  124  may be 200 um˜300 um. For example, the thickness of the bottom  124 - 1 , the side surface  124 - 2  and the top surface  124 - 3  composing the second reflection cup  124  may be 200 um˜300 um. 
     The thickness  142  of the exposed end of the first reflection cup  122  toward the first side surface  210  of the body  110  may be 0.2 mm˜0.3 mm. The thickness  144  of the exposed end of the second reflection cup  124  toward the second side surface  220  of the body  110  may be 0.2 mm˜0.3 mm. 
     The top surface  122 - 3  of the first reflection cup  122  and the top surface  124 - 3  of the second reflection cup  124  may be in parallel with the bottom  103  of the body cavity  105 . The top surfaces of the first and second connection pads  126  and  128  may be in parallel to the top surfaces of the first and second reflection cups  122  and  124 . However, the embodiment may not be limited thereby. The bottom  103  of the body cavity  105  may be higher than the top surface  122 - 3  of the first reflection cup  122 , the top surface  124 - 3  of the second reflection cup  124  and the top surfaces of the first and second connection pads  126  and  128 . 
     The thickness (T31) of the first connection pad  126  may be 200 um˜300 um. The thickness (T32) of the exposed end  146  of the first connection pad  126  toward the outside may be 0.2 mm˜0.3 mm. The thickness (T41) of the second connection pad  128  may be 200 um˜300 um. The thickness (T42) of the end  148  of the second connection pad  128  toward the outside of the body  110  may be 0.2 mm˜0.3 mm. 
     In the light emitting device package according to the embodiment shown in  FIG. 8 , the body cavity  105  may be filled with an encapsulation material  820 , to encapsulate and protect the first and second light emitting devices  132  and  134 . 
     The encapsulation material  820  may fill not only in the body cavity  105  but also in the first reflection cup  122  having the first light emitting device  132  mounted therein and the second reflection cup  124  having the second light emitting device  134  mounted therein to isolate the first and second light emitting devices  132  and  134  from the outside. In other words, the encapsulation material  820  may cover the body, the first reflection cup, the second reflection cup, the first connection pad and the blocking partition wall. 
     The encapsulation material  820  may be formed of silicon or resin. After silicon or resin fills in the body cavity  105 , the silicon or resin may be hardened to form the encapsulation material  820  and the embodiment is not limited thereby. 
     The encapsulation material  820  may include a phosphor to change characteristics of the lights emitted from the first and second light emitting devices  132  and  134 . The phosphor may enable excitation of the lights emitted from the light emitting devices  132  and  134 , to realize different color lights. 
     For example, if the light emitting devices  132  and  134  may be blue light emitting diodes and the phosphor is a yellow light luminescence material, the yellow light of the yellow phosphor may be in excitation because of the blue light and a white light may be generated after that. When the light emitting devices  132  and  134  emit ultraviolet rays, R, G and B phosphors may be added to the encapsulation material  820  to realize a white light. Here, a lens (not shown) may be formed on the encapsulation material  820  to adjust distribution of the lights emitted from the light emitting device package  100 . 
     To block the light interference between the light emitting devices  132  and  134  and to improve light reflection efficiency, the height (H1) of the first reflection cup  122  and the height of the second reflection cup  124  may be determined in consideration of the heights of the light emitting devices  132  and  134 . Here, the height of the first reflection cup  122  may be identical to that of the second reflection cup  124 . 
       FIG. 11  illustrates serial connection according to an embodiment between the light emitting devices provided in the light emitting device package. In reference to  FIG. 11 , an end of a first wire  1052  may be bonded with the top surface  122 - 3  of the first reflection cup  122  and the other end of the first wire  1052  may be bonded with the first light emitting device  132 . An end of a second wire  1054  may be bonded with the first light emitting device and the other end of the second wire  1054  may be bonded with the first connection pad  126 . 
     An end of a third wire  1056  may be bonded with the first connection pad  126  and the other end of the third wire  1056  may be bonded with the second light emitting device  134 . Also, an end of a fourth wire  1058  may be bonded with the second light emitting device  134  and the other end of the fourth wire  1058  may be bonded with the top surface  124 - 3  of the second reflection cup  134 . 
     For example, one of the first and second electrodes  12  and  14  may be electrically connected with the first reflection cup  122  and one of the third and fourth electrodes  16  and  18  may be electrically connected with the second reflection cup  124 . The first connection pad  126  may electrically connect the other one of the first and second electrodes  12  and  14  with the other one of the third and fourth electrodes  16  and  18 . 
     The serial connection between the light emitting devices  132  and  134  shown in  FIG. 11  may be enabled by means of the connection pads  126  independent from the light emitting devices  132  and  134 . Because of that, the first light emitting device  132  and the second light emitting device  134  may be securely connected with each other in serial and electrical reliability of the light emitting device package may be enhanced accordingly. 
       FIG. 12  illustrates parallel connection according to an embodiment between the light emitting devices provided in the light emitting device package. In reference to  FIG. 12 , an end of a first wire  1152  may be bonded with the top surface  122 - 3  of the first reflection cup  132  and the other end of the first wire  1152  may be bonded with the first light emitting device  132 . 
     An end of a second wire  1154  may be bonded with the first light emitting device  132  and the other end of the second wire  1154  may be bonded with the top surface  124 - 3  of the second reflection cup  134 . An end of a third wire  1156  may be bonded with the top surface  122 - 1  of the first reflection cup  132  and the other end of the third wire  1156  may be bonded with the second light emitting device  134 . At this time, each predetermined area of the second and third wires  1154  and  1156  may be positioned on the blocking partition wall  680 . 
     Lastly, an end of a fourth wire  1158  may be bonded with the second light emitting device  134  and the other end of the fourth wire  1158  may be bonded with the top surface  124 - 1  of the second reflection cup  134 . As a result, the light emitting devices  132  and  134  may be electrically connected with each other in parallel by the bonding with the first to fourth wires  1154  to  1158 . 
     For example, one of the first and second electrodes  12  and  14  may be electrically connected with the first reflection cup  122 . One of the third and fourth electrodes  16  and  18  may be electrically connected with the second reflection cup  124 . The other one of the first and second electrode  12  and  14  may be electrically connected with the second reflection cup  124 . The other end of the third and fourth electrodes  18  may be electrically connected with the first reflection cup  122 . 
       FIG. 13  illustrates serial connection according to another embodiment between the light emitting devices of the light emitting device package. In reference to  FIG. 13 , an end of a first wire  1252  may be bonded with the top surface  122 - 1  of the first reflection cup  132  and the other end of the first wire  1252  may be bonded with the first light emitting device  132 . An end of a second  1154  may be bonded with the first light emitting device  132  and the other end of the second wire  1154  may be directly bonded with the second light emitting device  134 . At this time, a predetermined area of the second wire  1154  may be positioned on the blocking partition wall  680 . 
     An end of a third wire  1156  may be connected with the second light emitting device and the other end of the third wire may be bonded with the top surface  124 - 1  of the second reflection cup  134 . 
     For example, one of the first and second electrodes  12  and  14  may be electrically connected with the first reflection cup  122 . One of the third and fourth electrodes  16  and  18  may be electrically connected with the second reflection cup  124 . The other one of the first and second electrode  12  and  14  may be electrically connected with the other one of the third and fourth electrodes  16  and  18 . 
     The light emitting devices  132  and  134  shown in  FIG. 13  may be electrically connected with each other in serial by the bonding with the first to third wires  1252  to  1256 . Different from  FIG. 11 , the first and second light emitting devices  132  and  134  may be directly connected with each other by the second wire  1254 , not by means of the connection pad  126 . 
     Each height of the wires bonded with the first reflection cup  122 , the second reflection cup  124 , the first light emitting device  132 , the second light emitting device  134  and the zenor diode  150 , respectively, may be smaller than the height of the top surface  106  of the body cavity  105 . 
     According to the embodiment, the light emitting devices  132  and  134  may be mounted in the two reflection cups  122  and  124  separately provided in the body, respectively, not the single cup type light emitting device package. Because of that, the light emitting devices  132  and  134  that are the heat sources may be separated from each other and the reflection cups  122  and  124  may block the heat emitted from the light emitting devices  132  and  134 , to prevent discoloration of the body  110  provided in the light emitting device package  100  and to extend the life span of the light emitting device package  100  accordingly. Also, the two reflection cups  122  and  124  separated from each other may prevent the lights emitted thereby from interfering with each other. 
       FIG. 14  illustrating a light emitting device package  100 - 2  according to a further embodiment. The same numeral references given to component parts of  FIG. 14  as  FIG. 1  will refer to the same component parts. Repeated description with respect to the description mentioned above will be omitted or made in brief. Connection between wires  1252 ,  1254  and  1258  shown in  FIG. 14  may be the serial connection shown in  FIG. 13 . 
     In reference to  FIG. 14 , the light emitting device package  100 - 2  may include a body  110 , a first reflection cup  122 , a second reflection cup  124 , a first connection pad  126 , a second reflection cup  128 , a first light emitting device  132 , a second light emitting device  134 , a zenor diode  150 , the wires  1252 ,  1254  and  1258  and a blocking partition wall  680 - 1 . 
     The blocking partition wall  680 - 1  may be similar to the blocking partition wall  680  shown in  FIG. 1 . 
     The blocking partition wall  680 - 1  may include a first region  682  having a different height from the height of the other region. The height of the first region  682  may be lower than the height of the other region of the blocking partition wall  680 - 1 . That is, the first region  682  may be recess-shaped. For example, the blocking partition wall  680 - 1  may have a first recess  682 . The first recess  682  may be recessed from a top surface of the blocking partition wall  680 - 1 , with being open from a side to the other opposite side of the blocking partition wall  680 - 1 . For example, the first recess  682  may be a top that is open toward both of the first and second reflection cups  122  and  124 . The first recess  682  may be aligned with a second electrode  14  of the first light emitting device  132  mounted in the first reflection cup  122  and a first electrode  16  of the second light emitting device  134  mounted in the second reflection cup  124 . The first recess  682  may expose a bottom  103  of a cavity  105  or not. 
     The first wire  1252  may electrically connect the first reflection cup  122  with the first electrode  12  of the first light emitting device  122 . The fourth wire  1258  may electrically connect the second reflection cup  124  with the second electrode  18  of the second light emitting device  124 . 
     The second wire  1254  may electrically connect the second electrode  14  of the first light emitting device  122  with a third electrode of the second light emitting device  124 . The second wire  1254  may connect the second electrode  14  with the third electrode  13  via the first recess  682 . In other words, the second wire  1254  may be disposed in the first recess  682  partially. The second wire  1254  may be in contact with a lower surface  603  of the first recess  682 , spaced apart a predetermined distance from a side wall  601  of the first recess  682 . Arrangement of the second wire  1254  passing the first recess  682  according to an embodiment will be shown in  FIG. 19 . 
     When the first light emitting device  122  and the second light emitting device  124  are connected with each other in serial by the wire, the wire has to be disposed beyond the blocking partition wall  680  and the wire has to be provided higher accordingly. The high wire happens to break disadvantageously. 
     However, the blocking partition wall  680 - 1  shown in  FIG. 14  may include the first recess  682 . Because of that, the height of the second wire  1254  may be smaller than the height of the blocking partition wall  680 - 1 . This embodiment may prevent the second wire  1254  directly connecting the first and second light emitting devices  132  and  134  from breaking easily. 
       FIG. 15  illustrates a light emitting device package  100 - 3  according to a further embodiment. 
     In reference to  FIG. 15 , a blocking partition wall  680 - 2  may be similar to the blocking partition wall  680 - 1  shown in  FIG. 14 . 
     The blocking partition wall  680 - 2  may include first and second regions  682 - 1  and  682 - 2  having a different height. Here, the first region  682 - 1  may be spaced apart a predetermined distance from the second region  682 - 2 . 
     Each height of the first and second regions  682 - 1  and  682 - 2  may be smaller than the height of the other region of the blocking partition wall  680 - 1 . For example, the blocking partition wall  680 - 2  may include a first recess  682 - 1  and a second recess  682 - 2  that are spaced apart a predetermined distance from each other. 
     Each of the first and second recesses  682 - 1  and  682 - 2  may be recessed from a top surface of the blocking partition wall  680 - 2 , with being open from a side to the other opposite side of the blocking partition wall  680 - 2 . For example, top surfaces of the first and second recesses  682 - 1  and  682 - 2  may be open toward the first reflection cup  122  and the second reflection cup  124 , respectively. Each of the first and second recesses  682 - 1  and  682 - 2  may be inclined recesses having a proper slope with respect to the side surface of the blocking partition wall  680 - 2 . The first and second recesses  682 - 1  and  682 - 2  may expose the bottom  103  of the cavity or not. 
     A first wire  1152  may electrically connect the first reflection cup  122  with a first electrode  12  of the first light emitting device  122  and a fourth wire  1158  may electrically connect the second reflection cup  124  with a second electrode  18  of the second light emitting device  124 . 
     A second wire  1154  may electrically connect the second electrode  14  of the first light emitting device  122  with the second reflection cup  124  via the second recess  682 - 2  and a third wire  1156  may electrically connect a third electrode  16  of the second light emitting device  124  with the first reflection cup  122  via the first recess  682 - 1 . 
     That is, the second wire  1154  may be partially disposed in the second recesses  682 - 1  and the third wire  1156  may be partially disposed in the first recess  682 - 1 . The second wire  1154  may be in contact with a lower surface of the second recess  682 - 2 , spaced apart a predetermined distance from a side wall of the second recess  682 - 2 . Also, the third wire  1156  may be in contact with a lower surface of the first recess  682 - 1 , spaced apart a predetermined distance from a side wall of the first recess  682 - 1 . 
       FIG. 16  illustrates a light emitting device package  100 - 4  according to a still further embodiment. The same numeral references given to component parts of  FIG. 16  as  FIG. 1  will refer to the same component parts. Repeated description with respect to the description mentioned above will be omitted or made in brief. 
     In reference to  FIG. 16 , a blocking partition wall  680  according to this embodiment may be formed of a reflective material capable of reflecting a light. When the blocking partition wall  680  and a body  110  are formed of the same material, reflective layers  685 - 1  and  685 - 2  may be disposed on side surfaces of the blocking partition wall  680 . For example, a first reflective layer  685 - 1  may be disposed on a side of the blocking partition wall  680 - 1  that faces the first reflection cup  122  and a second reflective layer  685 - 2  may be disposed on a side of the blocking partition wall  680 - 1  that faces the second reflection cup  124 . 
     The reflective layer  685 - 1  and  685 - 2  may be formed of metal including at least one of Ag, Ni, Al, Rh, Pd, Ir, Ru, Mg, Zn, Pt, Au and Hf or alloy of them. 
     Also, the reflective layer  685 - 1  and  685 - 2  may be distributed Bragg reflective layers. For example, the reflective layer  685 - 1  and  685 - 2  may have the first and second layers alternatively multilayered at least one time. At this time, the first layer may include a semiconductor layer such as AlGaAs or a dielectric material such as TiO 2 . The second layer may include a semiconductor layer such as AlAs or a dielectric material such as SiO 2 . For example, the reflective layer  685 - 1  and  685 - 2  may be a distributed Bragg reflective layer having an AlGaAs/AlAs layer or a TiO 2 /SiO 2  layer multilayered at least one time. The reflective layer  685 - 1  and  685 - 2  may block interference of lights emitted from the first and second light emitting devices  132  and  134  with each other and enhance efficiency of light extraction performed by the light emitting device package simultaneously. 
       FIG. 17  illustrates a light emitting device package  100 - 5  according to a still further embodiment. The same numeral references given to component parts of  FIG. 17  as  FIG. 16  will refer to the same component parts. Repeated description with respect to the description mentioned above will be omitted or made in brief. 
     The light emitting device package  100 - 5  shown in  FIG. 17  may not include the second connection pad  128  provided in the light emitting device  100 - 3  shown in  FIG. 15  and the other component parts of the light emitting device  100 - 4  may be the same as those of the light emitting device  100 - 3  shown in  FIG. 15 . 
       FIG. 18  illustrates a light emitting device  100 - 6  according to a still further embodiment and  FIG. 19  is a sectional view illustrating recesses shown in  FIGS. 14, 15, 18 and 20 . The same numeral references given to component parts of  FIG. 18  as  FIG. 1  will refer to the same component parts. Repeated description with respect to the description mentioned above will be omitted or made in brief. 
     In reference to  FIGS. 18 and 19 , the light emitting device package  100 - 6  may include a body  110 , a first reflection cup  122 , a second reflection cup  124 , a first connection pad  126 , a second connection pad  128 , a first light emitting device  132 , a second light emitting device  134 , a zenor diode  150 , wires  151  to  159  and a blocking partition wall  690 . 
     The blocking partition wall  690  may be disposed on a region of a top surface  103  of the body  110 , positioned between the first reflection cup  122  and the second reflection cup  124 , between the first reflection cup  122  and the first connection cup  126 , between the first reflection cup  122  and the second connection pad  128 , between the second reflection cup  124  and the first connection pad  126  and between the second reflection cup  124  and the second connection pad  128 . The height and the width of the blocking partition wall  690  may be identical to those of the blocking partition wall  680  shown in  FIG. 1 . 
     The blocking partition wall  690  may include a third region  692  positioned between the first reflection cup  122  and the first connection pad  126 , with a different height, and a fourth region  694  position between the second reflection cup  124  and the first connection pad  126 , with a different height. The heights of the third and fourth regions  692  and  694  may be smaller than the height of the other region of the blocking partition wall  690 . A second wire  154  may pass the third region  692  and a third wire  156  may pass the fourth region  694 . 
     For example, the blocking partition wall  690  may include a third recess  692  having the second wire  154  to pass there through and a fourth recess  694  having the third wire  156  to pass there through. The third recess  692  may be provided in a predetermined area of the blocking partition wall  690  that is positioned between the first reflection cup  122  and the first connection pad  126 . The fourth recess  694  may be provided in another area of the blocking partition wall  690  that is positioned between the second reflection cup  124  and the first connection pad  126 . A fifth wire  159  may electrically connect the first reflection cup  122  with the zenor diode  150 , with positioned on the blocking partition wall  690 . 
       FIG. 20  illustrates a light emitting device package  100 - 7  according to a still further embodiment. The same numeral references given to component parts of  FIG. 20  as  FIG. 18  will refer to the same component parts. Repeated description with respect to the description mentioned above will be omitted or made in brief. 
     A blocking partition wall  690 - 1  shown in  FIG. 20  may be disposed on a bottom  103  of a cavity  105  that is positioned between a first reflection cup  122  and a second reflection cup  124 , between the first reflection cup  122  and a first connection pad  126 , between the first reflection cup  122  and a second reflection pad  128  and between the second reflection cup  124  and the first connection pad  126 . 
     The blocking partition wall  690 - 1  may include a third recess  692  having a second wire  154  to pass there through and a fourth recess  694  having a third wire  156  to pass there through. The third recess  692  may be provided in a predetermined area of the blocking partition wall  690 - 1  that is located between the first reflection cup  122  and the first connection pad  126 . The fourth recess  694  may be provided in another area of the blocking partition wall  690 - 1  that is positioned between the second reflection cup  124  and the first connection pad  126 . A fifth wire  159  may electrically connect the first reflection cup with a zenor diode  150 . 
     In the light emitting device package shown in  FIG. 18 , the fifth wire  159  may be disposed on the blocking partition wall and it might break easily. However, in the light emitting device package shown in  FIG. 20 , the blocking partition wall  690 - 1  may be not disposed between the first reflection cup  122  and the second connection pad  128  and the second reflection cup  124  and the second connection pad  128 . Because of that, the height of the fifth wire  159  electrically connecting the first reflection cup  122  with the zenor diode  150  may be smaller than the height of the blocking partition wall  690 - 1 . As a result, the embodiment shown in  FIG. 20  may lower the installation height of the fifth wire  159  and it may prevent the fifth wire  159  from breaking easily. 
     A light emitting device package (not shown) according to a still further embodiment may not include the second connection pad  128  provided in the light emitting device packages shown in  FIGS. 1, 14, 15, 16, 17 and 20 . 
       FIG. 22  is an exploded perspective view illustrating a lighting device including the light emitting device package according to the embodiments. In reference to  FIG. 22 . 
     The lighting device according to this embodiment may include a light source  750  configured to project a light, a housing  700  configured to mount the light source  750  therein, a heat radiation unit  740  configured to radiate the heat of the light source  750 , and a holder  760  connecting the light source  750  and the heat radiation unit  740  with the housing  700 . 
     The housing  700  may include a socket-secured part  710  secured to an electric socket (not shown) and a body part  730  connected with the socket-secured part  710 , with the light source  750  mounted therein. A single air hole  720  may be formed through the body part  730 . 
     The plurality of the air holes  720  may be formed in the body part  730  of the housing  400 . The air hole  720  may be a single hole or the plurality of the air holes may be disposed in a radial direction. Here, various arrangements of the plurality of the air holes may be possible, rather than the radial arrangement. 
     The light source  750  may include a substrate  754  and a plurality of light emitting device packages  752  disposed on the substrate  754 . The substrate  754  may have a predetermined shape to be inserted in an opening of the housing  700  and it may be formed of a material having a high thermal conductivity to transmit heat to the heat radiation unit  740 . 
     The holder  760  may be provided under the light source and it may include a frame and another air hole. Although not shown in the drawing, optical elements may be provided under the light source  750  and lights emitted from the light emitting device package  752  may be diffused, scattered or collected. 
     The lighting device according to this embodiment may extend a life span of the light emitting device packages mounted therein and can prevent light interference, because it uses the light emitting device package according to the embodiments described above. 
       FIG. 23  is a diagram illustrating a display device including the light emitting device package according to the embodiments. 
     In reference to  FIG. 23 , a display device  800  according to an embodiment may include light source modules  830  and  835 , a reflective plate  820  provided on a bottom cover  810 , a light guide plate  840  disposed in front of the reflective plate  820  to guide a light emitted from the light source modules  830  and  835  forwardly, an optical sheet including first and second prism sheets  850  and  860  disposed in front of the light guide plate  840 , a panel  870  disposed in front of the prism sheets  850  and  860 , a image signal output circuit  872  connected with the panel  870  to transmit a image signal on the panel  870  and a color filter  880  disposed in front of the panel  870 . Here, the bottom cover  810 , the reflective plate  820 , the light source modules  830  and  835 , the light guide plate  840  and the optical sheet may form a backlight unit. 
     The light source module includes a light emitting device package  835  provided on a substrate  830 . The substrate  830  may be a PCB and the light emitting device package  835  may be one of the light emitting device packages  100 - 1  to  100 - 7  according to the embodiments described above. 
     The bottom cover  810  may hold the inner components of the display device  800 . The reflective plate  820  may be an auxiliary component as shown in the drawing or the reflective sheep  820  formed of a material having high reflectivity may be coated on a back surface of the light guide plate  840  or a front surface of the bottom cover  810 . 
     The material which can be used for an ultra-thin film type with a high reflectivity may be used to form the reflective plate  820  and polyethylene terephtalate (PET) may be used for reflective plate  820 . 
     The light guide plate  830  may scatter the lights emitted from the light source modules to distribute the lights to an overall screen area of a liquid crystal display device uniformly. Because of that, the light guide plate  830  may be formed of a material having a good refractive index and transmissivity, for example, polymethylmethacrylate (PMMA), polycarbonate (PC) and polyethylene (PE). 
     The first prism sheet  850  is formed in a surface of a supporting film and it is formed of polymer having transparency and elasticity. The polymer may have prism layers having a plurality of space structures formed repeatedly. The plurality of the patterns may be ribbed and grooved repeatedly in a stripe type, as shown in the drawing. 
     A direction of the ribbed and grooved shape formed in the surface of the supporting film provided in the second prism sheet  860  may be perpendicular to a direction of the ribbed and grooved shape formed in the surface of the supporting film provided in the first prism sheet  850 . This is because the lights transmitted from the light source module and the reflective sheet have to be distributed in a forward direction of the panel  870  uniformly. 
     Although not shown in the drawing, a protection sheet may be provided on each of the prism sheets and the protection sheet may include a light diffusive element and binder provided on both surfaces of the supporting film. The prism layer may be formed of a polymer material selected from a group including polyurethane, butadiene-styrene copolymers, polyacrilate, Polymethacrylate, Polymethyl Methacrylate, polyethylene terephthalate elastomer, polyisoprene and polysilicon. 
     Although not shown in the drawing, a diffuser sheet may be disposed between the light guide plate  840  and the first prism sheet  850 . The diffuser sheet may be formed of a polyester-polycarbonate-based material and a light incident from a backlight unit is refracted and scattered, such that a light projection angle may be broadened as much as possible. The diffuser sheet includes a supporting layer having a light-diffusing agent and first and second layers formed in a light emitting surface (toward the first prism sheet) and a light incident surface (toward the reflective sheet), respectively, with no light-diffusing agent. 
     According to this embodiment, the diffuser sheet, the first prism sheet  850  and the second prism sheet  860  composes an optical sheet. The optical sheet may be configured of other compositions of a micro-lens array, a diffuser sheet and a micro-lens array or a single prism sheet and a micro-lens array, for example. 
     The panel  870  may be disposed on a liquid crystal display panel and other types of display devices requiring a light source may be provided, rather than the liquid crystal display panel. The color filter  880  is provided on a front surface of the panel  870  and it may transmit only red, green blue lights of the light projected from the panel  870  via pixels. Because of that, the image may be presented. 
     The display device according to the embodiment uses the light source modules including the light emitting device package according to the embodiments described above. Because of that, the lights emitted from the light emitting devices  132  and  134  may be prevented from interfering with each other. 
     A light emitting device package can block light interference and enhance light extraction efficiency, with restraining breakage of wires. 
     The light emitting device includes a body; first and second reflection cups spaced apart from each other in a top surface of the body; a first connection pad disposed in the top surface of the body, spaced apart from the first and second reflection cups; a first light emitting device disposed on the first reflection cup; a second light emitting device disposed on the second reflection cup; and a partition wall disposed between the first reflection cup and the second reflection cup, the partition wall extended from the top surface of the body upwardly. 
     The first reflection cup and the second reflection cup may be recessed from the top surface of the body. 
     The body may include a reflection wall disposed around the first reflection cup, the second reflection cup and the first connection pad, with being extended from the top surface of the body upwardly. 
     The first reflection cup, the second reflection cup and the first connection pad may be spaced apart from each other in the top surface of the body, and the body may include a first cavity formed by a side wall and the top surface thereof. 
     The first reflection cup may include a second cavity formed in the top surface of the body, with an open top, and the second reflection cup may include a third cavity formed in the top surface of the body, spaced apart from the second cavity with an open top. The first light emitting device may be disposed on the second cavity and the second light emitting device may be disposed on the third cavity. 
     The first reflection cup and the second reflection cup may be formed of a material that is different from a material used to form the body, and the partition wall may be formed of a material that is identical to the material used to form the body, and the partition wall is integrally formed with the body. 
     The first light emitting device may include first and second electrodes having different polarities from each other, respectively, and the second light emitting device may include third and fourth electrodes having different polarities from each other, respectively. 
     The light emitting device package may further include a first wire connecting the first electrode with the first reflection cup; a second wire connecting the second electrode with the first connection pad; a third wire connecting the first connection pad with the third electrode; and a fourth wire connecting the fourth electrode with the second reflection cup. 
     The light emitting device package may further include a first wire connecting the first electrode with the first reflection cup; a second wire connecting the second electrode with the second reflection cup; a third wire connecting the first reflection cup with the third electrode; and a fourth wire connecting the fourth electrode with the second reflection cup. 
     The light emitting device package may further include a first wire connecting the first electrode with the first reflection cup; a second wire connecting the second electrode with the third electrode; and a third wire connecting the fourth electrode with the second reflection cup. 
     The height of the partition wall may be identical to or smaller than the height of the side wall of the first cavity. 
     The partition wall may include a first region having a different height, and the second wire passes through the first region. 
     The partition wall may be disposed on a top surface of the body disposed between the first reflection cup and the first connection pad and between the second reflection cup and the first connection pad. 
     The partition wall may further include a second region disposed between the first reflection cup and the first connection pad, with a different height; and a third region disposed between the second reflection cup and the first connection pad, with a different height, and the second wire passes the second region and the third wire passes the third region. 
     The partition wall may have partially different heights and the partition wall comprises first and second regions spaced apart from each other, and the second wire passes the first region and the third wire passes the second region. 
     The light emitting device package may further include a reflective layer disposed on a side surface of the partition wall. 
     The reflective layer may be a distributed Bragg reflective layer or a metal layer comprising at least one of Ag, Ni, Al, Rh, Pd, Ir, Ru, mg, Zn, Pt, Au and Hf or an alloy of them. 
     The light emitting device package may further include a second connection pad disposed in the top surface of the body, spaced apart from the first reflection cup, the second reflection cup and the first connection pad. 
     The light emitting device package may further include an encapsulation material covering the body, the first reflection cup, the second reflection up, the first connection pad and the partition wall. 
     In another aspect, a display device include a panel; a backlight unit emitting a light toward the panel; an image signal output circuit connected with the panel, to provide an image signal, wherein the backlight unit may include a bottom cover; a reflective plate disposed on the bottom cover; a light guide plate disposed on the reflective plate; a light emitting module comprising a plurality of light emitting device packages disposed on a substrate, to emit a light toward the light guide plate; and an optical sheet disposed on the light guide plate, and each of the light emitting device packages may include a body; first and second reflection cups spaced apart from each other in a top surface of the body; a first connection pad disposed in the top surface of the body, spaced apart from the first and second reflection cups; a first light emitting device disposed on the first reflection cup; a second light emitting device disposed on the second reflection cup; and a partition wall disposed between the first reflection cup and the second reflection cup, the partition wall extended from the top surface of the body upwardly. 
     According to the embodiment, light interference may be blocked and light extraction efficiency may be enhanced. Also, wire breakage may be suppressed. 
     It is to be understood that both the foregoing general description and the following detailed description of the embodiments are exemplary and explanatory and are intended to provide further explanation of the embodiment as claimed. 
     It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiment without departing from the spirit or scope of the embodiments. Thus, it is intended that the embodiment covers the modifications and variations of this embodiment provided they come within the scope of the appended claims and their equivalents.