Patent Publication Number: US-9887337-B2

Title: Manufacturing method of light emitting device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a divisional application of the U.S. patent application Ser. No. 14/683,164 filed Apr. 10, 2015, which claims priority under 35 U.S.C. § 119 to Japanese Patent Application No. 2014-081158, filed Apr. 10, 2014. The contents of this application are incorporated herein by reference in their entirety. 
    
    
     BACKGROUND OF THE INVENTION 
     (1) Field of the Invention 
     The present invention relates to a manufacturing method of a light emitting device. 
     (2) Description of the Related Art 
     A light emitting device that employs a semiconductor light emitting element (light emitting element) such as a light emitting diode is widely used because it can easily be miniaturized and also due to its high luminous efficiency. A light emitting device that employs a light emitting element may be roughly divided into two types, namely, a face-up type according to which the surface of the light emitting element where a pad electrode is to be provided is on the opposite side from the mounting substrate, and a face-down type according to which an electrode is provided on the lower surface of the light emitting element which is a surface facing the mounting substrate. 
     According to the face-up type, the light emitting element is mounted on a lead or the like, and the light emitting element and the lead are connected by a bonding wire or the like. Accordingly, when mounted on the mounting substrate and viewed in a plan view in a direction perpendicular to the surface of the substrate, a part of the bonding wire has to be positioned on the outside than the light emitting element, and thus there may be a limit on miniaturization. 
     On the other hand, with the face-down type (flip-chip type), a pad electrode provided on a surface of the light emitting element and wiring provided on the mounting substrate may be electrically connected by a connection part such as a bump or a metal pillar positioned within the range of the size of the light emitting element when viewed in plan view in a direction perpendicular to the surface of the mounting substrate. Therefore, a CSP (Chip Size Package or Chip Scale Package) may be realized where the size of the light emitting device (especially the size in plan view when viewed in a direction perpendicular to the mounting substrate) is miniaturized to a size close to that of the chip of the light emitting element. 
     Furthermore, in recent years, for further miniaturization or further increased luminous efficiency, a face-down light emitting device from which a growth substrate (light-transmissive substrate) of sapphire or the like is removed or the thickness thereof is reduced is used. 
     A growth substrate is a substrate used for growing thereon an n-type semiconductor layer and a p-type semiconductor layer for forming a light emitting element, and has an effect of increasing the strength of a light emitting device by supporting the light emitting element that is thin and has low strength. Accordingly, with a light emitting device whose growth substrate is removed or whose growth substrate is reduced in thickness after a light emitting element is formed, a resin layer is provided on the electrode side (side facing a mounting substrate) to support the light emitting element, and also a metal pillar penetrating the resin layer is formed, and the electrode of the light emitting element and wiring (wiring layer) provided to the mounting substrate are electrically connected by this metal pillar, as indicated in Japanese Unexamined Patent Application Publication No. 2010-141176 (hereinafter referred to as Patent Document 1), for example. With the resin layer including this metal pillar, the light emitting device may secure sufficient strength. 
     On the other hand, for example, Japanese Unexamined Patent Application Publication No. 5-299530 (hereinafter referred to as Patent Document 2) and Japanese Unexamined Patent Application Publication No. 2008-251794 (hereinafter referred to as Patent Document 3) disclose, although not with respect to a light emitting element, methods of connecting, by a metal wire, wiring on a mounting substrate and a terminal provided on the surface of a resin for external connection. 
     SUMMARY OF THE INVENTION 
     According to one aspect of the present invention, a manufacturing method of a light emitting device includes preparing a wafer that is provided by arranging a plurality of semiconductor light emitting elements including semiconductor stacks and electrodes provided on first surfaces of the semiconductor stacks. A metal wire is wired in an arc shape between the electrodes of the plurality of semiconductor light emitting elements that are arranged in one direction on the wafer so as to connect each of the electrodes and the metal wire. A resin layer is provided on a side of the first surfaces of the semiconductor stacks in such a way that the metal wire is accommodated inside the resin layer. The wafer is cut along a boundary line to segment the plurality of semiconductor light emitting elements so as to singulate the plurality of semiconductor light emitting elements. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein: 
         FIG. 1  is a schematic perspective view showing a structure of a light emitting device according to a first embodiment of the present invention; 
         FIGS. 2A and 2B  are schematic views showing the structure of the light emitting device according to the first embodiment of the present invention, in which  FIG. 2A  is a plan view, and  FIG. 2B  is a cross-sectional view along line A-A in  FIG. 2A ; 
         FIGS. 3A and 3B  are schematic views showing the structure of the light emitting device according to the first embodiment of the present invention, in which  FIG. 3A  is a cross-sectional view along line B-B in  FIG. 2A , and  FIG. 3B  is a cross-sectional view along line C-C in  FIG. 2A ; 
         FIGS. 4A and 4B  are schematic views showing an example of the structure of the light emitting element according to the first embodiment of the present invention, in which  FIG. 4A  is a plan view, and  FIG. 4B  is a cross-sectional view along line A-A in  FIG. 4A ; 
         FIGS. 5A and 5B  are schematic views showing an example of the structure of the light emitting element according to the first embodiment of the present invention, in which  FIG. 5A  is a cross-sectional view along line B-B in  FIG. 4A , and  FIG. 5B  is a cross-sectional view along line C-C in  FIG. 4A ; 
         FIGS. 6A to 6D  are schematic cross-sectional views showing side-view mounting of light emitting devices according to the embodiment of the present invention and reference examples, in which  FIG. 6A  shows the light emitting device according to the embodiment of the present invention, and  FIGS. 6B to 6D  show the light emitting devices according to the reference examples; 
         FIG. 7  is a flow chart showing a manufacturing method of the light emitting device according to the first embodiment of the present invention; 
         FIGS. 8A to 8D  are schematic views showing a light emitting element preparation step in manufacturing steps for the light emitting device according to the first embodiment of the present invention, in which  FIG. 8A  is a plan view,  FIG. 8B  is a cross-sectional view along line A-A in  FIG. 8A ,  FIG. 8C  is a cross-sectional view along line B-B in  FIG. 8A , and  FIG. 8D  is a cross-sectional view along line C-C in  FIG. 8A ; 
         FIGS. 9A to 9D  are schematic views showing a metal layer forming step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, in which  FIG. 9A  is a plan view,  FIG. 9B  is a cross-sectional view along line A-A in  FIG. 9A ,  FIG. 9C  is a cross-sectional view along line B-B in  FIG. 9A , and  FIG. 9D  is a cross-sectional view along line C-C in  FIG. 9A ; 
         FIGS. 10A to 10D  are schematic views showing a wire wiring step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, in which  FIG. 10A  is a plan view,  FIG. 10B  is a cross-sectional view along line A-A in  FIG. 10A ,  FIG. 10C  is a cross-sectional view along line B-B in  FIG. 10A , and  FIG. 10D  is a cross-sectional view along line C-C in  FIG. 10A ; 
         FIG. 11  is a schematic perspective view showing the wire wiring step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention; 
         FIGS. 12A and 12B  are schematic views showing a resin layer forming step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, in which  FIG. 12A  is a cross-sectional view of a portion corresponding to line A-A in  FIG. 10A , and  FIG. 12B  is a cross-sectional view of a portion corresponding to line B-B in  FIG. 10A ; 
         FIGS. 13A and 13B  are schematic views showing a surface machining step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, in which  FIG. 13A  is a cross-sectional view of a portion corresponding to line A-A in  FIG. 10A , and  FIG. 13B  is a cross-sectional view of a portion corresponding to line B-B in  FIG. 10A ; 
         FIGS. 14A to 14C  are schematic views showing a half-dicing step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, in which  FIG. 14A  is a plan view,  FIG. 14B  is a cross-sectional view along line A-A in  FIG. 14A , and  FIG. 14C  is a cross-sectional view along line B-B in  FIG. 14A ; 
         FIGS. 15A and 15B  are schematic views showing an external connection electrode forming step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, in which  FIG. 15A  is a cross-sectional view of a portion corresponding to line A-A in  FIG. 14A , and  FIG. 15B  is a cross-sectional view of a portion corresponding to line B-B in  FIG. 14A ; 
         FIG. 16  is a schematic view showing a growth substrate removal step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, and is a cross-sectional view of a portion corresponding to line A-A in  FIG. 14A ; 
         FIG. 17  is a schematic view showing a phosphor layer forming step in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, and is a cross-sectional view of a portion corresponding to line A-A in  FIG. 14A ; 
         FIGS. 18A and 18B  are schematic views showing a singulation process in the manufacturing steps for the light emitting device according to the first embodiment of the present invention, in which  FIG. 18A  is a cross-sectional view of a portion corresponding to line A-A in  FIG. 14A , and  FIG. 18B  is a cross-sectional view of a portion corresponding to line B-B in  FIG. 14A ; 
         FIG. 19  is a schematic perspective view showing a structure of a light emitting device according to a second embodiment of the present invention; 
         FIGS. 20A and 20B  are schematic views showing the structure of the light emitting device according to the second embodiment of the present invention, in which  FIG. 20A  is a cross-sectional view along line A-A in  FIG. 19 , and  FIG. 20B  is a cross-sectional view along line B-B in  FIG. 19 ; 
         FIG. 21  is a schematic perspective view showing a structure of a light emitting device according to a third embodiment of the present invention; 
         FIGS. 22A and 22B  are schematic views showing the structure of the light emitting device according to the third embodiment of the present invention, in which  FIG. 22A  is a cross-sectional view along line A-A in  FIG. 21 , and  FIG. 22B  is a cross-sectional view along line B-B in  FIG. 21 ; 
         FIG. 23  is a schematic perspective view showing a structure of a light emitting device according to a fourth embodiment of the present invention; 
         FIGS. 24A and 24B  are schematic views showing the structure of the light emitting device according to the fourth embodiment of the present invention, in which  FIG. 24A  is a cross-sectional view along line A-A in  FIG. 23 , and  FIG. 24B  is a cross-sectional view along line B-B in  FIG. 23 ; 
         FIG. 25  is a schematic perspective view showing a structure of a light emitting device according to a fifth embodiment of the present invention; 
         FIGS. 26A and 26B  are schematic views showing the structure of the light emitting device according to the fifth embodiment of the present invention, in which  FIG. 26A  is a cross-sectional view along line A-A in  FIG. 25 , and  FIG. 26B  is a cross-sectional view along line B-B in  FIG. 25 ; 
         FIG. 27  is a schematic perspective view showing a structure of a light emitting device according to a sixth embodiment of the present invention; 
         FIGS. 28A and 28B  are schematic views showing the structure of the light emitting device according to the sixth embodiment of the present invention, in which  FIG. 28A  is a cross-sectional view along line A-A in  FIG. 27 , and  FIG. 28B  is a cross-sectional view along line B-B in  FIG. 27 ; 
         FIG. 29  is a schematic perspective view showing a structure of a light emitting device according to a seventh embodiment of the present invention; and 
         FIGS. 30A and 30B  are schematic views showing the structure of the light emitting device according to the seventh embodiment of the present invention, in which  FIG. 30A  is a cross-sectional view along line A-A in  FIG. 29 , and  FIG. 30B  is a cross-sectional view along line B-B in  FIG. 29 . 
     
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     The embodiments will now be described with reference to the accompanying drawings, wherein like reference numerals designate corresponding or identical elements throughout the various drawings. 
     Hereinafter, embodiments of a light emitting device according to the present disclosure and a manufacturing method thereof will be described. The drawings referred to in the description below schematically show the present disclosure, and the scales, the gap, the positional relationship and the like of the members may be exaggerated, or some of the members may be omitted. Also, the scales and the gap of the members may not coincide among the perspective view, the plan view and the cross-sectional view. Also, in the following description, the same name and the same reference sign basically refer to the same member or a member of the same material, and detailed description is omitted as appropriate. 
     Also, “above”, “below”, “left”, “right” and the like of the light emitting device according to each embodiment of the present invention may change depending on the situation. In the present specification, “above”, “below” and the like indicate the relative positions of the structural elements in the drawings referred to in the description, and are not intended to indicate the absolute positions unless particularly stated. 
     First Embodiment 
     Structure of Light Emitting Device 
     First, a structure of a light emitting device according to a first embodiment will be described with reference to  FIG. 1  to  FIG. 3B . As shown in  FIG. 1  to  FIG. 3B , a light emitting device  100  according to the first embodiment is a CSP which has a substantially cuboid outer shape, and which includes a semiconductor light emitting element  1  (hereinafter referred to a “light emitting element” as appropriate) having an LED (light emitting diode) structure from which a growth substrate is removed, a supporting member  3  provided on one surface side of the light emitting element  1 , and a phosphor layer (wavelength conversion layer)  2  provided on the other surface side of the light emitting element  1 . An n-side electrode  13  and a p-side electrode  15  are provided to one surface side of the light emitting element  1 , and are electrically connected, via a metal layer (n-side metal layer)  33   n  and a metal layer (p-side metal layer)  33   p  and a metal wire (n-side metal wire)  32   n  and a metal wire (p-side metal wire)  32   p , which are internal wiring provided inside a resin layer  31 , which is a main material of the supporting member  3 , to an external connection electrode (n-side external connection electrode)  34   n  and an external connection electrode (p-side external connection electrode)  34   p , respectively, provided to cover the side surfaces and the upper surface of the resin layer  31 . 
     Additionally, to show the internal structure in an easily understandable manner, the perspective view shown in  FIG. 1  shows a see-through view of the resin layer  31  with the outer form of the resin layer  31  indicated by a double-dashed line. Also, in  FIG. 1 , description of a step portion  31   g  (see  FIG. 2B , and  FIGS. 3A and 3B ) described later with respect to a lower portion (−Z axis direction) of the resin layer  31  is omitted. Also, the same thing may be said with respect to the perspective views of light emitting devices according to second to seventh embodiments shown in  FIGS. 19A to 29A  as with the perspective view shown in  FIG. 1 . 
     The light emitting device  100  is structured in such a way as to allow side-view mounting with one of the side surfaces in the longitudinal direction (a side surface parallel to the XZ plane) along which the external connection electrodes  34   n  and  34   p  are provided as the mounting surface, and to allow top-view mounting with the upper surface (a side surface parallel to the XY plane) as the mounting surface. Also, as shown in  FIG. 2B , and  FIGS. 3A and 3B , the step portion  31   g  is provided on a side surface in the lateral direction (a side surface parallel to the YZ plane) and a side surface in the longitudinal direction of the light emitting device  100 , with a position H D  in the height direction (Z-axis direction) as the boundary. The lower side surface below the position H D  is formed to be on the inner side, in plan view, than the upper side surface above the position H D . Additionally, as will be described later in detail, the light emitting device  100  is a WCSP (a CSP by a wafer process) which is fabricated at a wafer level. 
     Also, the light emitting device  100  converts, by a phosphor layer  2 , a part or all of light emitted by the light emitting element  1  into light of a different wavelength, and takes, as output light, the light after wavelength conversion or the light after wavelength conversion and the light emitted by the light emitting element  1 . For example, with the light emitting element  1  emitting blue light and the phosphor layer  2  absorbing a part of the blue light and performing wavelength conversion into yellow light, the light emitting device  100  can be a white light source that outputs white light which is a mixture of blue light and yellow light. Additionally, in the present embodiment and other embodiments described later, the light emitting device  100  and the like include the phosphor layer  2 , but the phosphor layer  2  is not indispensable in forming the CSP, and may be omitted. 
     Additionally, for the sake of convenience, in the present specification, as shown by coordinate axes drawn in each drawing as appropriate, the normal direction of the surface where the n-side electrode  13  and the p-side electrode  15  of the light emitting element  1  are provided is taken as the “+Z-axis direction”, and observation from the +Z-axis direction to the −Z-axis direction is referred to as “in plan view”. Also, the longitudinal direction of the light emitting element  1  having a rectangular shape in plan view is referred to as the X-axis direction, and the lateral direction as the Y-axis direction. Moreover, each drawing shown as a cross-sectional view shows a cross-section of a surface perpendicular to the XY plane (that is, a plane parallel to the XZ plane or the YZ plane). 
     Next, the structure of each section of the light emitting device  100  will be described one by one in detail. The light emitting element  1  is a face-down LED chip having a substantially rectangular plate shape in plan view, and including the n-side electrode  13  and the p-side electrode  15  on one surface side. 
     Example of Light Emitting Element 
     Here, with reference to  FIGS. 4A and 4B  and  FIGS. 5A and 5B , an example of the light emitting element  1  will be described in detail. The light emitting element  1  shown in  FIGS. 4A and 4B  and  FIGS. 5A and 5B  includes a semiconductor stack  12  where a n-type semiconductor layer  12   n  and a p-type semiconductor layer  12   p  are stacked. The semiconductor stack  12  emits light when a current flows between the n-side electrode  13  and the p-side electrode  15 , and an active layer  12   a  is preferably provided between the n-type semiconductor layer  12   n  and the p-type semiconductor layer  12   p.    
     An area where the p-type semiconductor layer  12   p  and the active layer  12   a  are partially absent, that is, an area that is recessed from the surface of the p-type semiconductor layer  12   p  (this area is referred to as a “step portion  12   b ”) is formed to the semiconductor stack  12 . The bottom surface of the step portion  12   b  is the exposed surface of the n-type semiconductor layer  12   n , and the n-type semiconductor layer  12   n  and the n-side electrode  13  are electrically connected at a connecting portion  13   a , which is an opening of a protective layer  16  provided at a part of the bottom surface of the step portion  12   b . Also, a full-surface electrode  14 , which is a reflective electrode  14   a  and a cover electrode  14   b  stacked together, is provided on substantially the whole of the upper surface of the p-type semiconductor layer  12   p  of the semiconductor stack  12 . Furthermore, the surfaces of the semiconductor stack  12  and the full-surface electrode  14  are covered by the insulating protective layer  16  except for the whole of the lower surface of the semiconductor stack  12 , the connecting portion  13   a , which is a part of the bottom surface of the step portion  12   b , and a part of the upper surface of the full-surface electrode  14  where the p-side electrode  15  is provided. Also, the light emitting element  1  has a protrusion-recess shape  12   c  for increasing the light extraction efficiency formed on the entire surface of the lower surface of the n-type semiconductor layer  12   n . Such a protrusion-recess shape  12   c  can be formed, in the manufacturing steps for the light emitting device  100  described later, by performing etching after a growth substrate (for example, a sapphire substrate) for crystal growth of the semiconductor stack  12  is removed. 
     Moreover, the light emitting element  1  has the p-side electrode  15 , which is a pad electrode on the p-side, formed on a part of the upper surface of the full-surface electrode  14 , and has the n-side electrode  13 , which is a pad electrode on the n-side, formed extending over substantially all of the upper surface and the side surfaces of the semiconductor stack  12  except for the area where the p-side electrode  15  is provided and its periphery, with the insulating protective layer  16  provided below the n-side electrode  13 . That is, the light emitting element  1  has the n-side electrode  13  and the p-side electrode  15  formed on one surface side of the semiconductor stack  12 . Also, by providing the n-side electrode  13  or the p-side electrode  15  over a wide area of the upper surface and the side surfaces of the light emitting element  1  in this manner, the heat dissipation property may be improved by efficiently conducting heat to the resin layer  31  of the supporting member  3  described later. 
     A semiconductor made of, for example, In X Al Y Ga 1-X-Y N (0≦X, 0≦Y, X+Y&lt;1) is suitably used for the semiconductor stack  12  (the n-type semiconductor layer  12   n , the active layer  12   a , and the p-type semiconductor layer  12   p ). Also, each of the semiconductor layers may have a single layer structure, or a stacked structure having layers with different compositions, film thicknesses or the like, a superlattice structure, or the like. Particularly, the active layer  12   a  preferably has a single quantum well or multiple quantum well structure where thin films achieving a quantum effect are stacked. 
     The full-surface electrode  14  has functions of a current diffusion layer and a reflective layer, and is structured with the reflective electrode  14   a  and the cover electrode  14   b  stacked together. The reflective electrode  14   a  is provided to cover substantially the entire upper surface of the p-type semiconductor layer  12   p . Also, the cover electrode  14   b  is provided to cover all of the upper surface and the side surfaces of the reflective electrode  14   a . The reflective electrode  14   a  is a conductor layer for uniformly diffusing, over the entire surface of the p-type semiconductor layer  12   p , the current supplied via the cover electrode  14   b  and the p-side electrode  15  provided to a part of the upper surface of the cover electrode  14   b . Moreover, the reflective electrode  14   a  has good light reflectivity, and functions as a reflective film for reflecting light emitted by the light emitting element  1  toward the light extraction surface. 
     As the reflective electrode  14   a , a metal material having good conductivity and reflectivity can be used. As a metal material having good reflectivity particularly in a visible light region, Ag, Al or any of alloys having these metals as the principal components may be suitably used. Furthermore, as the reflective electrode  14   a , these metal materials can be used as a single layer or as a multilayer structure. 
     Furthermore, the cover electrode  14   b  is a barrier layer for preventing migration of a metal material forming the reflective electrode  14   a . As the cover electrode  14   b , a metal material having good conductivity and barrier properties can be used, and for example, Al, Ti, W, Au, an AlCu alloy or the like may be used. Also, as the cover electrode  14   b , these metal materials can be used as a single layer or as a multilayer structure. 
     The n-side electrode  13  is electrically connected to the n-type semiconductor layer  12   n  at the opening of the protective layer  16  at the bottom surface of the step portion  12   b . As shown by hatching in  FIG. 4A , the connecting portion  13   a  between the n-type semiconductor layer  12   n  and the n-side electrode  13  is provided along the entire outer peripheral portion of the semiconductor stack  12 . By providing the connecting portion  13   a  over a wide area in this manner, the current that is supplied via the n-side electrode  13  can be uniformly diffused on the n-type semiconductor layer  12   n , and the luminous efficiency may be increased. Also, the p-side electrode  15  is provided to a part of the upper surface of the cover electrode  14   b . As shown in  FIGS. 2A and 2B  and  FIGS. 3A and 3B , a metal wire  32   n  and a metal wire  32   p , which are internal wiring of the supporting member  3 , are connected to the n-side electrode  13  and the p-side electrode  15  via the metal layer  33   n  and the metal layer  33   p , respectively. 
     As the n-side electrode  13  and the p-side electrode  15 , a metal material can be used, and for example, a single metal such as Ag, Al, Ni, Rh, Au, Cu, Ti, Pt, Pd, Mo, Cr, or W, or any of alloys having these metals as the principal components can be suitably used. Additionally, in the case of using an alloy, an alloy containing a non-metal element such as Si as a compositional element, such as an AlSiCu alloy, may also be used. Also, as the n-side electrode  13  and the p-side electrode  15 , these metal materials can be used as a single layer or as a stacked multilayer structure. 
     The protective layer  16  is a coating film that has an insulating property and that covers the upper surface and the side surfaces of the semiconductor stack  12  and the full-surface electrode  14  other than the areas where the connecting portion  13   a  between the n-type semiconductor layer  12   n  and the n-side electrode  13 , and the p-side electrode  15  are provided. The protective layer  16  functions as a protective film and an insulating film of the light emitting element  1 . Also, the n-side electrode  13  is provided extending over a wide area on the upper surface of the protective layer  16 . As the protective layer  16 , a metal oxide or a metal nitride may be used, and for example, an oxide or a nitride of at least one type selected from the group consisting of Si, Ti, Zr, Nb, Ta and Al can be suitably used. Moreover, as the protective layer  16 , light-transmissive dielectric materials of two or more types with different refractive indices may be stacked and a DBR (Distributed Bragg Reflector) film may be formed. 
     Additionally, the light emitting element  1  shown in  FIGS. 4A and 4B  and  FIGS. 5A and 5B  is only an example, and is not restrictive. It is enough if the light emitting element  1  has the n-side electrode  13  and the p-side electrode  15  provided on one surface side of the semiconductor stack  12 , and the arrangement areas of the step portion  12   b , the n-side electrode  13  and the p-side electrode  15 , and the like may be determined as appropriate. 
     Returning to  FIG. 1  to  FIG. 3B , the structure of the light emitting device  100  will be further described. The phosphor layer (wavelength conversion layer)  2  is a wavelength conversion layer that absorbs a part or all of the light emitted by the light emitting element  1  and that converts the light into light of a wavelength different from the wavelength emitted by the light emitting element  1 . The phosphor layer  2  may be formed as a resin layer containing particles of phosphor as a wavelength conversion material. Furthermore, the phosphor layer  2  is provided on the lower surface side of the n-type semiconductor layer  12   n , which is provided with the protrusion-recess shape  12   c  (see  FIG. 4B ) and which is the light extraction surface of the light emitting element  1 . 
     The film thickness of the phosphor layer  2  may be determined according to the amount of phosphor contained, the color desired to be obtained after mixing the color of light emitted by the light emitting element  1  and the color of light after wavelength conversion, or the like, and for example, it is 1 μm or more and 500 μm or less, and more preferably, 5 μm or more and 200 μm or less, and even more preferably, 10 μm or more and 100 μm or less. 
     As a resin material for forming the phosphor layer  2 , one that is known in the field may be used, and preferably, one that has good light-transmissiveness with respect to light emitted by the light emitting element  1  and light after wavelength conversion by the phosphor contained in the phosphor layer  2  is used. 
     Also, the phosphor (wavelength conversion material) is not particularly limited as long as it is a fluorescent substance that is excited by light of a wavelength emitted by the light emitting element  1  and that emits fluorescence of a wavelength different from the excitation light, and two or more types may be uniformly mixed in the phosphor layer  2 , or may be distributed in a multilayer structure. 
     The phosphor layer  2  may be formed by adjusting a slurry containing the resin mentioned above, the phosphor particles, and other inorganic filler particles in a solvent, applying the adjusted slurry to the lower surface of the semiconductor stack  12  by using a coating method such as a spraying method, a casting method or a potting method, and curing the same. Moreover, the phosphor layer  2  may be formed by separately fabricating a resin plate containing phosphor particles and adhering the resin plate to the lower surface of the semiconductor stack  12 . 
     Alternatively, light emitted by the light emitting element  1  may be directly output with the lower surface of the semiconductor stack  12  as the light extraction surface, without providing the phosphor layer  2  in the light emitting device  100 . Also, instead of the phosphor layer  2 , a light-transmissive resin layer not containing phosphor may be provided, or a light diffusion resin layer containing a light diffusive filler may be provided. 
     The supporting member  3  is a reinforcing member that has a cuboid shape accommodating the outer shape of the light emitting element  1  in plan view, and that is bonded with the surface of the light emitting element  1  where the n-side electrode  13  and the p-side electrode  15  are provided so as to maintain the strength of the structure of the light emitting element  1  from which the growth substrate  11  (see  FIGS. 8A to 8D ) is removed. Also, the supporting member  3  has substantially the same outer shape as the phosphor layer  2  in plan view. The supporting member  3  includes the resin layer  31 , the external connection electrodes  34   n  and  34   p  to be mounted on a mounting substrate, and internal wiring (the metal wires  32   n  and  32   p , and the metal layers  33   n  and  33   p ) for electrically connecting the n electrode  13  and the p electrode  15  with the external connection electrodes  34   n  and  34   p  of corresponding polarities, respectively. 
     The resin layer  31  is a main body as a reinforcing member of the light emitting element  1 . Also, as shown in  FIG. 2B  and  FIGS. 3A and 3B , the resin layer  31  has substantially the same outer shape as the supporting member  3 , and in plan view, accommodates the outer shape of the light emitting element  1  and has substantially the same outer shape as the phosphor layer  2 . Moreover, the resin layer  31  is a sealing resin layer for sealing the upper surface and the side surfaces of the light emitting element  1 . Accordingly, the light emitting element  1  has its entire surface sealed by the resin layer  31  and the phosphor layer  2 , which is a resin layer provided on the lower surface side. Also, the step portion  31   g  is provided on the side surfaces in the longitudinal direction and the side surfaces in the lateral direction of the resin layer  31 , with the position H D  in the height direction as the boundary, and in plan view, the portion lower than the position H D  is formed to be on the inner side than the portion higher than the position H D . 
     The resin layer  31  includes inside, as the internal wiring, the metal wires  32   n  and  32   p , and the metal layers  33   n  and  33   p . The side surfaces of the metal layers  33   n  and  33   p , which are the internal wiring on the lower layer side, are sealed by the resin layer  31  so as not to be exposed from the resin layer  31 . Also, the metal wires  32   n  and  32   p , which are the internal wiring on the upper layer side, are provided in such a way as to be exposed at the side surfaces in the longitudinal direction, the side surfaces in the lateral direction and the upper surface of the resin layer  31 . Also, the exposed surfaces of the metal wires  32   n  and  32   p  are formed to be flat so as to form the same plane as the side surfaces or the upper surface of the resin layer  31  where they are exposed. 
     Additionally, the exposed surfaces of the metal wires  32   n  and  32   p  from the resin layer  31  are covered by the external connection electrodes  34   n  and  34   p . For this reason, the surfaces of the external connection electrodes  34   n  and  34   p  are formed to be higher than the corresponding side surface or upper surface of the resin layer  31  by the amount of the film thickness. 
     As the resin material of the resin layer  31 , a resin material similar to that used for the phosphor layer  2  described above can be used. Also, in the case of forming the resin layer  31  by compression molding, an EMC (epoxy mold compound), which is a powder epoxy resin, an SMC (silicone mold compound), which is a powder silicone resin, or the like can be suitably used as a raw material, for example. 
     Furthermore, to increase the heat conductivity, a heat conductive member may be included in the resin layer  31 . By increasing the heat conductivity of the resin layer  31 , heat generated by the light emitting element  1  can be swiftly conducted and dissipated to the outside. As the heat conductive member, a powder carbon black, AlN (aluminum nitride) or the like can be used, for example. Additionally, in the case where the heat conductive member is a material having conductivity, the heat conductive member is included at a particle density within such a range that the resin layer  31  would not have conductivity. 
     Furthermore, as the resin layer  31 , a white resin obtained by mixing a light reflective filler in a light-transmissive resin material may be used. In the case where the white resin is used at least on the lower layer section of the resin layer  31  that is bonded with the upper surface of the light emitting element  1  to cause the resin layer  31  on the side adjacent to the light emitting element  1  to function as a light reflective film, light leaked from the upper surface and the side surfaces of the light emitting element  1  may be returned to inside the light emitting element  1 , and thus, the efficiency of light extraction from the lower surface side of the light emitting element  1 , which is a light extraction surface, may be increased. Also, in the case where the resin layer  31  has the function as a light reflective film, the full-surface electrode  14  of the light emitting element  1  may be formed by using a light-transmissive conductive material such as ITO (indium tin oxide), IZO (indium zinc oxide) or the like. 
     With respect to the thickness of the resin layer  31 , a lower limit may be set so that enough strength may be achieved as the reinforcing member for the light emitting element  1  from which the growth substrate is stripped off. Furthermore, in the case of enabling side-view mounting, the lower limit is preferably determined taking into account the distances between the external connection electrodes  34   n  and  34   p  and the phosphor layer  2  so that an adhesive material such as solder does not extend to the phosphor layer  2  from an-side electrode connecting portion. 
     For example, from the standpoint of being a reinforcing member, the thickness of the resin layer  31  is preferably about 30 μm or more. Further preferably, the thickness of the resin layer  31  is about 100 μm or more and 300 μm or less so as to enable stable mounting of the light emitting device  100  at the time of mounting on a mounting substrate in a side-view manner with the side surface portion of the resin layer  31  as the mounting surface. Furthermore, from the standpoint of preventing spreading of an adhesive material to the phosphor layer  2 , the phosphor layer  2  is preferably separated from the external connection electrodes  34   n  and  34   p  by about 30 μm or more, and more preferably, the distance is about 80 μm or more. Additionally, in the present embodiment, the metal wires  32   n  and  32   p  are connected with the external connection electrodes  34   n  and  34   p  on the side surface portions of the resin layer  31 , and thus, the upper limit of the thickness of the resin layer  31  is not particularly specified. 
     The metal wire (n-side metal wire)  32   n  is provided on the inside the resin layer  31 , and together with the metal layer  33   n , forms internal wiring for electrically connecting the n-side electrode  13  and the external connection electrode  34   n . A part of the lower surface (first surface) of the metal wire  32   n  is bonded with the upper surface (second surface opposite to the first surface) of the metal layer  33   n  provided on top of the n-side electrode  13 , and the entire upper surface and a part of the side surface of the metal wire  32   n  are bonded with the external connection electrode  34   n . Moreover, the metal wire  32   n  functions also as a heat transfer route for dissipating heat generated by the light emitting element  1 . 
     The metal wire  32   n  is bonded with the upper surface of the metal layer  33   n  through the lower surface (first surface), that is, the side surface of the wire shape, and thus, the metal wire  32   n  and the metal layer  33   n  may be bonded in a wider area compared to a case of bonding through an end surface of the metal wire  32   n . Moreover, by causing the side surface of the wire shape to be bonded with the upper surface of the metal layer  33   n  and across the full width of the lateral direction (Y-axis direction) of the metal layer  33   n  when providing the metal wire  32   n  in such a way as to penetrate the resin layer  31  in the lateral direction, the bonded area of the metal wire  32   n  and the metal layer  33   n  may be further increased. By bonding the metal wire  32   n  and the metal layer  33   n  across a wider area, the heat conductivity from the metal layer  33   n  to the metal wire  32   n  may be increased, and as a result, the heat dissipation property of the light emitting device  100  may be improved. Additionally, the same thing may be applied in the case of bonding the side surface of the wire shape of the metal wire  32   n  and the upper surface of the n-side electrode  13  without providing the metal layer  33   n.    
     The metal wire  32   n  is formed by using a ribbon-shaped wire whose cross-sectional shape (the shape of the transverse plane, of the wire shape, which is a cross-section along the surface that is perpendicular to the extending direction of the wire shape) is a rectangle. In plan view, the metal wire  32   n  is disposed parallel to the lateral-direction side of the semiconductor stack  12  (along the Y-axis direction). Moreover, a part of the side surface (the lower surface in  FIG. 2B  and  FIGS. 3A and 3B ) of the wire shape of the metal wire  32   n  is connected to the upper surface of the metal layer  33   n , and both end surfaces (the side surfaces in  FIG. 2B  and  FIGS. 3A and 3B ), which are the transverse planes of the wire shape, are provided exposed at both side surfaces of the resin layer  31  in the longitudinal direction. Furthermore, other portions corresponding to the side surface of the wire shape of the metal wire  32   n  having curved shapes are provided so that a portion of the metal wire  32   n  is exposed at the side surface in the lateral direction and at the upper surface of the resin layer  31 . Additionally, the upper surface of the metal wire  32   n  is processed into a flat surface by machining. 
     Also, the metal wire  32   n  is disposed while being bent in a wave shape or in an arc shape with the portion above the metal layer  33   n  being the trough (see  FIG. 11  and  FIGS. 12A and 12B ). In this manner, by bending and wiring the metal wire  32   n , the volume of metal in the supporting member  3  (the resin layer  31 ) can be increased. Also, the metal wire  32   n  is provided penetrating in the lateral direction of the resin layer  31 , and the volume of metal in the supporting member  3  can be increased. Furthermore, with both end surfaces of the metal wire  32   n  being exposed from the resin layer  31  with relatively low heat conductivity, heat can be easily dissipated to the outside via both end surfaces of the metal wire  32   n . The forming method of the metal wire  32   n  will be described later in detail. 
     The metal wire  32   n  is exposed from the resin layer  31  at other than the side surface in the lateral direction facing the metal wire  32   p , that is, at the entire surface of the other side surface in the lateral direction, portions of both side surfaces in the longitudinal direction higher than a position H B , and the entire upper surface. These exposed surfaces where the metal wire  32   n  is exposed from the resin layer  31  are formed to be flat so as to form the same plane as the corresponding side surface or upper surface of the resin layer  31 . Also, these exposed surfaces where the metal wire  32   n  is exposed from the resin layer  31  are covered by the external connection electrode  34   n.    
     As shown in  FIGS. 2A and 2B , and  FIGS. 3A and 3B , when the height of the bonding surface (the position in the Z-axis direction) of the metal wire  32   n  and the metal layer  33   n  is given as a position H C , the metal wire  32   n  has its side surfaces in the longitudinal direction, at a lower portion from the position H C  to the position H B , covered by the resin layer  31 , and its side surfaces in the longitudinal direction, at an upper portion from the position H B  to a position HA, exposed from the resin layer  31 . 
     Also, the side surface of the metal wire  32   n  in the lateral direction has substantially the same shape as the cross-sectional shape shown in  FIGS. 3A and 3B , and the entire surface thereof is exposed at the side surface of the resin layer  31  in the lateral direction. Accordingly, the outer shape of the exposed surface of the metal wire  32   n  in a side view in the lateral direction is such that a portion corresponding to the width of the metal layer  33   n  is horizontal with respect to the upper surface of the electrode (a surface perpendicular to the XY plane) at the lowermost position H C , a portion from the position H C  to the position H B , which is at the lowermost end of the exposed surface in the longitudinal direction, is inclined to be wider from the position H C  toward the position H B , a portion from the position H B  to the position HA is vertical with respect to the upper surface of the electrode at the upper end, and a portion at the position HA is horizontal with respect to the upper surface of the electrode. 
     The metal wire (p-side metal wire)  32   p  is provided on the inside of the resin layer  31 , and together with the metal layer  33   p , forms internal wiring for electrically connecting the p-side electrode  15  and the external connection electrode  34   p . A part of the lower surface of the metal wire  32   p  is bonded with the upper surface of the metal layer  33   p  provided on top of the p-side electrode  15 , and the entire upper surface and a part of the side surface of the metal wire  32   p  are bonded with the external connection electrode  34   p . Moreover, the metal wire  32   p  functions also as a heat transfer route for dissipating heat generated by the light emitting element  1 . The structure of the metal wire  32   p  is substantially the same as that of the metal wire  32   n , and detailed description thereof is omitted. 
     The exposed surfaces of the metal wires  32   n  and  32   p  from the resin layer  31  are provided with the external connection electrodes  34   n  and  34   p , and are made the mounting surface at the time of top-view mounting. Also, the exposed surfaces of the metal wires  32   n  and  32   p  at the side surfaces of the resin layer  31  in the longitudinal direction are provided with the external connection electrodes  34   n  and  34   p , and are made the mounting surfaces at the time of side-view mounting. Accordingly, the exposed surfaces of the metal wire  32   n  and the exposed surfaces of the metal wire  32   p  are preferably separated by about 200 μm or more on the upper surface and the side surfaces in the longitudinal direction, for example, so as to prevent short-circuiting due to spreading of an adhesive material at the time of mounting. Additionally, in the present embodiment, the external connection electrodes  34   n  and  34   p  are provided only on the exposed surfaces of the metal wires  32   n  and  32   p , but in the case of providing the external connection electrodes  34   n  and  34   p  to extend over the upper surface and the side surfaces of the resin layer  31 , the external connection electrode  34   n  and the external connection electrode  34   p  are preferably separated by about 200 μm or more, for example. 
     As the metal wires  32   n  and  32   p , a material having good electrical conductivity and heat conductivity is preferably used, and Au, Cu, Al, Ag, or any of alloys having these metals as the principal components can be suitably used. Also, coating may be applied to the surfaces of the metal wires. Furthermore, with respect to efficient conduction of heat generated by the light emitting element  1 , the greater the volume of the metal wires  32   n  and  32   p  in the supporting member  3 , the more preferable. To inexpensively configure large-volume metal wires  32   n  and  32   p , Al, Cu or any of alloys having these metals as the principal components is preferably used. Also, at the time of forming the metal wires  32   n  and  32   p , in order to easily bend and dispose large-volume wires, that is, wires having large cross-sectional areas, it is preferable to use a relatively soft material such as Al, Au or any of alloys having these metals as the principal components. 
     The cross-sectional shape of wires used for forming the metal wires  32   n  and  32   p  is not particularly limited, and it may be an oval, a circle, a square or the like instead of a rectangle, but wires having a rectangular cross-section are preferable since bonding with the upper surfaces of the metal layers  33   n  and  33   p  with high adhesiveness and over large areas is enabled. Also, by using a rectangular cross-section, a load is applied uniformly to the metal layers  33   n  and  33   p  at the time of wire-bonding, and the impact on the semiconductor stack  12  on the lower side of the metal layers  33   n  and  33   p  can be reduced. Accordingly, the damage to the semiconductor stack  12  can be reduced when using wires having the same cross-sectional area compared to a case of using wires having round cross-sections. Moreover, in the case where the supporting member  3  has a cuboid shape, if a wire having a rectangular cross-section is used, the wire can be disposed by being bent in such a way as to reduce the gap within the shape of the supporting member  3 . This is preferable because the volumes of the metal wires  32   n  and  32   p  in the supporting member  3  can thus be increased. 
     The diameter of wires used for forming the metal wires  32   n  and  32   p  can be selected as appropriate according to the size of the supporting member  3 . For example, an Al wire having a rectangular cross-section having a size of up to about 1000 μm×500 μm can be used. Also, an Ag wire having a circular cross-section with a diameter of up to about 100 μm, or a Cu wire or an Al wire having a circular cross-section with a diameter of up to about 300 μm can be used. 
     Specifically, in the case where the cross-sections of the metal wires  32   n  and  32   p  are a rectangle, considering stable mounting of the light emitting device  100  and heat dissipation to the mounting substrate, the length of the short side of the rectangle (that is, the thickness of the metal wires  32   n  and  32   p ) is preferably about 100 m or more, and more preferably about 150 μm or more, and even more preferably about 200 μm or more. Also, considering the stress (strain) on the light emitting element  1  when connecting the metal wires  32   n  and  32   p , the length (thickness) of the short sides of the cross-sections of the metal wires  32   n  and  32   p  is preferably about 700 μm or less, and more preferably 400 μm or less, and even more preferably about 350 μm or less, and still more preferably about 250 μm or less. 
     Also, on the side surface of the resin layer  31  in the longitudinal direction, the width of the exposed surfaces of the metal wires  32   n  and  32   p  (the distance between the position HA and the position H B ) in the Z-axis direction, which is the height direction (that is, the stacking direction of the semiconductor stack  12 ), is preferably about one-third or more of the width of the resin layer  31  (the distance between the position HA and a position HE). Furthermore, each of the areas of the end surfaces of the metal wires  32   n  and  32   p  exposed at the side surfaces of the resin layer  31  in the longitudinal direction is preferably about 10000 μm 2  or more, and more preferably about 20000 μm 2  or more. The light emitting device  100  may then be mounted more stably, and the heat dissipation to the mounting substrate may be increased. Additionally, also in the case where the shape of the exposed surfaces of the metal wires  32   n  and  32   p  on the side surface of the resin layer  31  in the longitudinal direction is other than a rectangle, such as a circle, the width in the height direction (for example, in the case of a circle, the diameter of the circle) is preferably one-third or more of the width of the resin layer  31  in the height direction, and the same thing can be said for the area of the exposed surface as for the case of a rectangle. 
     Also, the length (width) of the long sides of the cross-sections of the metal wires  32   n  and  32   p  may be selected as appropriate according to the width of the supporting member  3  in the longitudinal direction, but considering the mountability of the light emitting device  100 , each area is preferably about 50 μm or more, and more preferably about 75 μm or more. Also, the exposed surface of the metal wire  32   n  and the exposed surface of the metal wire  32   p  are preferably separated by about 200 μm or more so that short-circuiting between the exposed surfaces at the time of mounting may be prevented. Thus, with respect to the upper limit of the total of the width of the metal wire  32   n  and the width of the metal wire  32   p , if the width of the supporting member  3  in the longitudinal direction is about 500 μm, the widths of the metal wires  32   n  and  32   p  may be about 300 μm or less in total, and if the width of the supporting member  3  in the longitudinal direction is about 2 mm, the widths of the metal wires  32   n  and  32   p  may be about 1800 μm or less in total. 
     Additionally, as shown in  FIGS. 10A to 10D , in a wire wiring step S 103  (see  FIG. 7 ) described later, in the case of connecting one metal wire  32  at the same time to the metal layer  33   n  of one of adjacent light emitting elements  1  and the metal layer  33   p  of the other light emitting element  1 , the width of the metal wire  32  to be disposed can be the total of the width of the metal wire  32   n  and the width of the metal wire  32   p . That is, in the case where the width of the supporting member  3  in the longitudinal direction is about 500 μm, the width of the metal wire  32  is preferably 300 μm or less, and in the case where the width of the supporting member  3  in the longitudinal direction is about 2 mm, the width of the metal wire  32  is preferably about 1800 μm or less. 
     The metal layer (n-side metal layer, electrode)  33   n  is internal wiring on the lower layer side provided on the n-side electrode  13 , and the metal wire  32   n , which is the internal wiring on the upper layer side, is bonded on the upper surface of the metal layer  33   n . Similarly, the metal layer (p-side metal layer, electrode)  33   p  is an internal wiring on the lower layer side provided on the p-side electrode  15 , and the metal wire  32   p , which is the internal wiring on the upper layer side, is bonded on the upper surface of the metal layer  33   p . The metal layers  33   n  and  33   p  function as shock absorbing layers at the time of bonding the metal wires  32   n  and  32   p  by using a wire bonder, and thus are for reducing damage to the semiconductor stack  12 . Accordingly, the film thickness of the metal layers  33   n  and  33   p  is preferably about 3 μm or more and 50 μm or less, and more preferably about 20 μm or more and 30 μm or less. Furthermore, the metal layers  33   n  and  33   p  are embedded in the resin layer  31  without being exposed, and have the function of increasing the height of the position H B  of the lower end of the exposed surfaces of the metal wires  32   n  and  32   p  on the side surfaces in the longitudinal direction. Additionally, the metal layers  33   n  and  33   p  may be assumed to be parts of the pad electrodes provided as the uppermost layers of the n-side electrode  13  and the p-side electrode  15 . 
     Additionally, in the case where the n-side electrode  13  and the p-side electrode  15 , which are the pad electrodes of the light emitting element  1 , are able to absorb the impact at the time of wire-bonding, the metal wires  32   n  and  33   p  may be directly bonded with the n-side electrode  13  and the p-side electrode  15  without the metal layers  33   n  and  33   p  being provided. Also, in the case of not providing the metal layers  33   n  and  33   p , the loop shape of the wires may be adjusted at the time of dispoing the metal wires  32   n  and  32   p  to the n-side electrode  13  and the p-side electrode  15  to thereby separate the position H B  of the lower end of the exposed surfaces of the metal wires  32   n  and  32   p  on the side surfaces in the longitudinal direction from the position HE of the lower surface of the light emitting element  1  by a predetermined distance or more. 
     As the metal layers  33   n  and  33   p , Cu, Au, Al or any of alloys having these metals as the principal components can be suitably used. Also, the metal layers  33   n  and  33   p  may have a stacked structure using a plurality of types of metal. The metal layers  33   n  and  33   p  may be formed by an electroplating method. Also, the metal layers  33   n  and  33   p  may be formed by using wire bumps that are formed at the time of ball-bonding the metal wires. 
     The external connection electrode (n-side external connection electrode)  34   n  and the external connection electrode (p-side external connection electrode)  34   p  are pad electrodes for bonding the light emitting device  100  to an external mounting substrate, and are provided in such a way as to be electrically connected to the exposed surfaces of the metal wires  32   n  and  32   p , which are internal wiring, from the resin layer  31 . Additionally, the exposed surfaces of the metal wires  32   n  and  32   p  from the resin layer  31  may be made connection surfaces with the outside for mounting, without providing the external connection electrodes  34   n  and  34   p.    
     Furthermore, to increase the bondability with the mounting substrate in which a bonding material of Au-based alloy such as Au—Sn eutectic solder is used, at least the uppermost layers of the external connection electrodes  34   n  and  34   p  are preferably formed of Au. For example, in the case where the metal wires  32   n  and  32   p  are formed of metal other than Au, such as Cu or Al, to increase the adhesiveness with Au, it is preferable to first form a thin Ni film and then to stack the Au layer on the Ni layer by an electroless plating method. Also, stacking may be performed with a Pd layer between Ni layer and Au layer such as Ni/Pd/Au. Furthermore, the total film thickness of each of the external connection electrodes  34   n  and  34   p  may be about 0.1 μm or more and 5 μm or less, or more preferably about 0.5 μm or more and 4 μm or less. 
     Next, referring to  FIGS. 6A to 6D , side-view mounting of the light emitting device  100  and heat dissipation by internal wiring will be described. Additionally, in  FIGS. 6A to 6D , for the sake of simple explanation, the external connection electrode  34   p  (see  FIG. 3A ) is omitted, and the light emitting device  100  is assumed to be directly bonded with a mounting substrate  90  on the exposed surface of the metal wire  32   p  from the resin layer  31 . In the same manner, description is given with respect to light emitting devices  200 ,  300  and  400  according to reference examples assuming that the light emitting devices  200 ,  300  and  400  are directly bonded with the mounting substrate  90  on the exposed surfaces of metal layers  234 ,  334  and  434 , which are internal wiring on the upper layer side, from the resin layer  31 . Also,  FIGS. 6A to 6D  show cross-sections of the electrodes and the internal wiring on the p-side, and since the same thing applies for the electrodes and the internal wiring on the n-side, illustration of the n-side will be omitted. 
       FIG. 6A  shows side-view mounting of the light emitting device  100  on the mounting substrate  90 . One of side surfaces in the longitudinal direction of the light emitting device  100  is made the mounting surface, and the metal wire  32   p  exposed to the mounting surface is bonded with a wiring pattern  92  provided on the upper surface of a substrate  91  using a conductive adhesive material  93  such as solder. 
     At this time, the adhesive material  93  may spread not only over the exposed surface of the metal wire  32   p , but also over the peripheral region of the exposed surface due to the weight of the light emitting device  100  or the pressure applied by the light emitting device  100  at the time of mounting. Then, when the adhesive material  93  reaches the phosphor layer  2 , which is the light extraction surface of the light emitting device  100 , the light extraction surface may be polluted by the adhesive material  93 , which may lead to reduction in the light extraction efficiency. Accordingly, a distance D 1  between the position H B  of the lower end (the lower end in the Z-axis direction; the right end in  FIGS. 6A to 6D ) of the exposed surface of the metal wire  32   p , which is an external connection region, and the position HE of the upper end of the light extraction surface is made to be a predetermined distance or more on the mounting surface at the time of side-view mounting. Although dependent on the size of the light emitting device  100  and the like, this predetermined distance may be 100 m, for example. 
     In this manner, from the standpoint of prevention of pollution of the light extraction surface at the time of mounting, a greater distance D 1  is more preferable. However, if the distance D 1  is increased, the proportion of the volume of the resin layer  31  is increased, and the heat dissipation property of efficiently transferring heat generated by the light emitting element  1  to the outside may be reduced. Here, the heat dissipation property of the light emitting device  100  will be described by considering a case of forming, to the light emitting device  100 , internal wiring on the upper layer side by using, instead of the metal wire  32   p , a metal layer (for example, a plated layer) whose transverse cross-sectional view has a constant shape and which has a columnar shape whose axis is along the Z-axis direction. 
     In a light emitting device  200  according to a reference example shown in  FIG. 6B , a metal layer  234  is provided so that a position of an upper surface of the p-side electrode  15  corresponds to a lower end (right end in  FIG. 6B ) of the metal layer  234 , and the portion higher, and the portion higher (positive direction of the Z-axis) than the position of the lower end is made the exposed surface that is exposed from the resin layer  31 . In this case, the proportion of a volume V 2  of the resin layer  31  in a supporting member  203  is extremely small, and the proportion of the metal layer  234  is great, and the light emitting device  200  may achieve a very good heat dissipation property. However, a distance D 2  between the lower end of the exposed surface of the metal layer  234  and the upper surface of the phosphor layer  2 , which is the light extraction surface (that is, the lower surface of the light emitting element  1 ), is small, and the light extraction surface may be easily polluted by the adhesive material  93  at the time of mounting. 
     Furthermore, in a light emitting device  300  according to a reference example shown in  FIG. 6B , a metal layer  334  is provided so that a position of an upper surface of the metal layer  333  provided on an upper surface of the p-side electrode  15  corresponds to a lower end (right end in  FIG. 6C ) of the metal layer  334 , and the portion higher (positive direction of the Z-axis) than the position of the lower end is made the exposed surface that is exposed from the resin layer  31 . The metal layer  333  here is the same as the metal layer  33   p  of the light emitting device  100 , and is for increasing the height of the lower end position of the exposed surface of the metal layer  334  at the side surface. In this case, the proportion of a volume V 3  of the resin layer  31  in a supporting member  303  is relatively small, and the proportion of the metal layer  334  is great, and the light emitting device  300  may achieve a good heat dissipation property. However, a distance D 3  between the lower end of the exposed surface of the metal layer  334  and the upper surface of the phosphor layer  2 , which is the light extraction surface (that is, the lower surface of the light emitting element  1 ), is relatively small, albeit greater than the distance D 2  at the light emitting device  200 , and is not enough to prevent pollution of the light extraction surface by the adhesive material  93  at the time of mounting. 
     Furthermore, in a light emitting device  400  according to a reference example shown in  FIG. 6D , a metal layer  434  is provided so that an upper surface of a metal layer  433  provided on the upper surface of the p-side electrode  15  corresponds to a lower end (right end in  FIG. 6D ) of the metal layer  434 , and the portion higher (positive direction of the Z-axis) than the position of the lower end is made the exposed surface that is exposed from the resin layer  31 . The metal layer  433  here has such a thickness that the position of the upper surface is equal to the position H C  of the lower end of the exposed surface of the metal wire  32   p  of the light emitting device  100  shown in  FIG. 6A . In this case, a distance D 4  between the lower end of the exposed surface of the metal layer  434  and the upper surface of the phosphor layer  2 , which is the light extraction surface (that is, the lower surface of the light emitting element  1 ), is sufficiently great, and thus pollution of the light extraction surface by the adhesive material  93  at the time of mounting may be effectively prevented. However, the proportion of a volume V 4  of the resin layer  31  in a supporting member  403  is great, and the proportion of the metal layer  434  is small, and the heat dissipation property of the light emitting device  400  is greatly reduced compared to the light emitting device  300 . 
     The light emitting device  100  according to the embodiment of the present invention is structured to have a taper-shape with the side surface of the lower portion inclined, from the lower ends (position He) of the metal wires  32   n  and  32   p  to the lower ends (position H B ) of the exposed surfaces at the side surfaces of the resin layer  31  in the longitudinal direction. In other words, metal members  32   n  and  32   p  respectively have a first surface, a second surface opposite to the first surface, a side surface extending from the second surface toward the first surface, and a tapered surface tapered from the side surface to the first surface. The metal members  32   n  and  32   p  are provided in the resin layer  31  and electrically connected to the upper surface of the electrodes  13  and  15  via the first surface. The side surface of the metal members  32   n  and  32   p  are exposed from the resin layer  31 . Accordingly, the distance D 1  between the lower end (position H B ) of the exposed surface of the metal wire  32   p  at the side surface of the resin layer  31  in the longitudinal direction and the upper surface (position HE) of the phosphor layer  2  is the same as the distance D 4  at the light emitting device  400 . Thus, pollution of the light extraction surface by the adhesive material  93  at the time of mounting can be effectively prevented. On the other hand, since the lower portion of the metal wire  32   p  is taper-shaped, the volume V 3  of the resin layer  31  in the supporting member  3  can be made smaller than the volume V 4  of the resin layer  31  at the light emitting device  400 . Accordingly, the light emitting device  100  can achieve a better heat dissipation property than the light emitting device  400 . 
     Additionally, the exposed surface of the metal wire  32   p  of the light emitting device  100  at the side surface of the resin layer  31  in the lateral direction has the same cross-sectional shape as the metal wire  32   p  shown in  FIG. 6A . Accordingly, the lower end of this exposed surface is at the position H C  at the upper surface of the metal layer  33   p . The exposed surface of the metal wire  32   p  at the side surface in the lateral direction is not a mounting surface, but is continuous with the exposed surface at the side surface in the longitudinal direction, and thus, in the case where the exposed surface in the longitudinal direction is made the mounting surface, the adhesive material  93  may possibly extends toward the phosphor layer  2  along the side surface in the lateral direction. In the light emitting device  100 , since the lower portion of the metal wire  32   p  has a tapered shape, the position H B  at the lower end of the exposed surface of the metal wire  32   p  at the side surface in the longitudinal direction is sufficiently separated from the position H C  at the lower end of the exposed surface of the metal wire  32   p  at the side surface in the lateral direction. Accordingly, the adhesive material  93  can be effectively prevented from extending to the position HE of the upper surface of the phosphor layer  2  along the exposed surface of the metal wire  32   p  at the side surface in the lateral direction and via the lower end of the position H C . 
     Operation of Light Emitting Device 
     Next, with reference to  FIG. 1  to  FIG. 5B , an operation of the light emitting device  100  will be described. Additionally, for the sake of convenience, description is given assuming that the light emitting element  1  emits blue light and the phosphor layer  2  emits yellow light. 
     According to the light emitting device  100 , when an external power source is connected to the external connection electrodes  34   n  and  34   p , which are positive and negative electrodes, via a mounting substrate (for example, see the mounting substrate  90  in  FIG. 6A ), a current is supplied between the n-side electrode  13  and the p-side electrode  15  of the light emitting element  1  via the metal wires  32   n  and  32   p  and the metal layers  33   n  and  33   p , which are internal wirings. Then, when a current is supplied between the n-side electrode  13  and the p-side electrode  15 , the active layer  12   a  of the light emitting element  1  emits blue light. 
     The blue light emitted by the active layer  12   a  of the light emitting element  1  propagates within the semiconductor stack  12  and is emitted from the lower surface of the light emitting element  1 , and a part of the light is absorbed by the phosphor contained in the phosphor layer  2  and is extracted to the outside after being converted into yellow light. Also, a part of the blue light passes through the phosphor layer  2  without being absorbed by the phosphor, and is extracted to the outside. Additionally, light propagating upward within the light emitting element  1  is reflected downward by the reflective electrode  14   a , and is emitted from the lower surface of the light emitting element  1 . Then, the yellow light and the blue light extracted to the outside of the light emitting device  100  are mixed, and thus white light is obtained. 
     Manufacturing Method of Light Emitting Device 
     Next, a manufacturing method of the light emitting device  100  shown in  FIG. 1  to  FIG. 3B  will be described with reference to  FIG. 7 . As shown in  FIG. 7 , the manufacturing method of the light emitting device  100  includes a light emitting element preparation step (wafer preparation step) S 101 , a metal layer forming step S 102 , a wire wiring step S 103 , a resin layer forming step S 104 , a surface machining step S 105 , a half-dicing step S 106 , an external connection electrode forming step S 107 , a growth substrate removal step S 108 , a phosphor layer forming step (wavelength conversion layer forming step) S 109 , and a singulation step S 110 , and the steps are carried out in this order. Moreover, the surface machining step S 105  and the half-dicing step S 106  are the step for exposing the internal wiring (internal wiring exposure step). 
     In the following, each step will be described in detail with reference to  FIG. 8A  to  FIG. 18B  (and with reference to  FIG. 1  to  FIG. 5B  and  FIG. 7  as appropriate). Additionally, detailed structure of the light emitting element  1  (for example, the protective layer  16 , the stacked structure of the semiconductor stack  12 , and the like) are omitted from each of  FIG. 8A  to  FIG. 18B . Also, the shapes, the sizes, and the positional relationship may be simplified or exaggerated as appropriate for other members. The same thing applies to the explanatory diagrams of the manufacturing steps of other embodiments described later. 
     The light emitting element preparation step (wafer preparation step) S 101  is a step of preparing the light emitting element  1  having the structure shown in  FIGS. 4A and 4B  and  FIGS. 5A and 5B , for example. In the light emitting element preparation step S 101 , a plurality of light emitting elements  1  are formed in the form of a wafer by being arranged on one growth substrate  11 . In  FIG. 8A  to  FIG. 18B , two light emitting elements  1  are formed in the longitudinal direction (X-axis direction) and four are formed in the lateral direction (Y-axis direction) in plan view. Additionally, plan views and cross-sectional views on a plurality of planes are shown in  FIG. 8A  to  FIG. 18B , and the direction of each figure is indicated by the coordinate axes. 
     Specifically, first, the semiconductor stack  12  is formed on the upper surface of the growth substrate  11  formed of sapphire or the like by sequentially stacking the n-type semiconductor layer  12   n , the active layer  12   a  and the p-type semiconductor layer  12   p  using the semiconductor material described above. When the semiconductor stack  12  is formed, parts of the p-type semiconductor layer  12   p , the active layer  12   a  and the n-type semiconductor layer  12   n  are removed by etching at partial regions of the upper surface of the semiconductor stack  12 , and the step portion  12   b  having the n-type semiconductor layer  12   n  exposed at the bottom surface is formed. 
     Also, at the same time as forming the step portion  12   b , the boundary region between the light emitting elements  1  may be etched to expose the n-type semiconductor layer  12   n . With this process, the side surface of the semiconductor stack  12  including at least the active layer  12   a  can be covered by the protective layer  16  later in the light emitting element preparation step S 101 . Moreover, the semiconductor stack  12  may be entirely removed at the boundary region such that the growth substrate  11  is exposed. This eliminates the need of dicing the semiconductor stack  12  in the singulation step S 110 , and singulation may be easily performed by dicing only the layer formed of resin. Additionally, in the example shown in  FIGS. 8A to 8D , the semiconductor stacks  12  at the boundary regions of the light emitting elements  1  (peripheral regions of boundary lines  40  shown by thick dotted line in each of  FIGS. 8A to 8D ) are entirely removed. 
     Next, the n-side electrode  13 , which is a pad electrode, is formed on the bottom surface of the step portion  12   b . Also, in the region which is to be a light emitting region including the p-type semiconductor layer  12   p  and the active layer  12   a , the full-surface electrode  14  is formed that includes the reflective electrode  14   a  for covering substantially the entire upper surface of the p-type semiconductor layer  12   p  and the cover electrode  14   b  for completely covering the upper surface and the side surfaces of the reflective electrode  14   a . Also, the p-side electrode  15 , which is a pad electrode, is formed on a part of the upper surface of the cover electrode  14   b . Furthermore, the protective layer  16  is formed on the entire surface of the wafer excluding the surfaces of the n-side electrode  13  and the p-side electrode  15  by sputtering, for example, and by using an insulating material such as SiO 2 . The light emitting elements  1  in the wafer state are thus formed as shown in  FIGS. 8A to 8D . 
     Next, in the metal layer forming step S 102 , the metal layer  33   n  is formed on the n-side electrode  13  and the metal layer  33   p  is formed on the p-side electrode  15  for each light emitting element  1 , as shown in  FIGS. 9A to 9D . The metal layers  33   n  and  33   p  can be formed by an electroplating method or the like, and may be shaped by a known method in the field such as a pattern formation method by etching or a pattern formation method by lift-off. Also, metal wires may be ball-bonded to the upper surfaces of the n-side electrode  13  and the p-side electrode  15  to form wire bumps, and these wire bumps may be used as the metal layers  33   n  and  33   p.    
     Next, as shown in  FIGS. 10A to 10D  and  FIG. 11 , in the wire wiring step S 103 , wiring is performed by using a wire bonder with respect to the n-side electrodes  13  and the p-side electrodes  15  of the light emitting elements  1  arranged in one direction (Y-axis direction) on the growth substrate  11  by repeating wedge bonding using one metal wire  32  for each line (the metal wire  32  is supplied at an angle from the movement direction of a wedge tool, and is bonded by being flattened by the tip end of the wedge tool). That is, the metal wire  32  is disposed, without being cut, to be sequentially connected (commonly connected) to the electrodes arranged in one line along one direction. At this time, the metal wire  32  is disposed while being bent in a wave shape, and the portions which are parts of the side surface of the wire shape of the metal wire  32  and correspond to the troughs of the wave shape are bonded with the upper surfaces of the metal layers  33   n  and  33   p  by wedge bonding. 
     In other words, at the time of this bonding, the metal wire  32  is disposed to have an arc shape between the n-side electrodes  13  or the p-side electrodes  15  of the light emitting elements  1  that are adjacent to each other in the wiring direction (Y-axis direction). That is, wiring is performed in such a way that the lower end (Z-axis direction) of the metal wire  32  at the boundary line  40  of the light emitting elements  1  is at the position H B , which is more separate from the semiconductor stack  12  (for example, the lower surface of the light emitting element  1  which is the light extraction surface) than the position H C  of the bonding surface of the metal layer  33   n  or  33   p.    
     At this time, the height of the arc of the metal wire  32  is adjusted such that the distance from the lower surface of the light emitting element  1  to the position H B  is a predetermined value (for example, 100 μm) or more. Additionally, the metal layer forming step S 102  may be omitted, and the metal wires  32  may be directly bonded on the n-side electrode  13  and the p-side electrode  15  without forming the metal layers  33   n  and  33   p . Also in this case, the height of the arcs of the metal wires  32  can be adjusted such that the distance from the lower surface of the light emitting element  1  to the position H B  is a predetermined value (for example, 100 μm) or more. 
     Additionally, the one direction (Y-axis direction) along which the light emitting elements  1  are arranged is a direction that is perpendicular to the direction (X-axis direction) along which the metal layer  33   n  connected to the n-side electrode  13  and the metal layer  33   p  connected to the p-side electrode  15  in each light emitting element  1  face each other. By wiring the metal wires  32  in this one direction, each metal wire  32  may be disposed independently without being disposed across the metal layer  33   n  and the metal layer  33   p  in one light emitting element  1 . 
     Also, in the example shown in  FIGS. 10A to 10D  and  FIG. 11 , the metal wire  32  is disposed, with respect to the light emitting elements  1  that are arranged adjacent to each other in the direction (X-axis direction) perpendicular to the wiring direction, so as to be bonded at the same time to the metal layer  33   n  of one of the light emitting elements  1  and the metal layer  33   p  of the other light emitting element  1 . That is, the metal wire  32  is disposed so as to extend, in the width direction, across the metal layer  33   n  of one light emitting element  1  (for example, the light emitting element  1  arranged on the left side in  FIG. 10A ) and the metal layer  33   p  of the other light emitting element  1  (for example, the light emitting element  1  arranged on the right side in  FIG. 10A ). 
     In this manner, by bonding the metal wire  32  to two metal layers  33   n  and  33   p  by performing wire bonding once, the number of times of wire bonding may be reduced. Also, using a ribbon-shaped wire having a rectangular cross-section as the metal wire  32  and wiring the ribbon-shaped wire in such a way that the long side of the rectangle extends across the metal layers  33   n  and  33   p  are preferable because the metal wire  32  may be bonded with the metal layers  33   n  and  33   p  with good adhesiveness. 
     Additionally, the metal wires  32  that are disposed across the light emitting elements  1  that are adjacent to each other in the wiring direction and in the direction perpendicular to the wiring direction are cut in the half-dicing step S 106  or the singulation step S 110  described below for each light emitting element  1 . Also, in the present embodiment, a ribbon-shaped wire having a rectangular cross-section is used as the metal wire  32  to be disposed, but this is not restrictive. For example, a metal wire having a circular cross-section with a diameter corresponding to the width (the length of the long side of the cross-section) of the ribbon-shaped metal wire  32  may be used to be disposed. Also, wiring may be separately performed for the metal layers  33   n  and for the metal layers  33   p  by using a metal wire having an appropriate width or diameter instead of performing wiring across the metal layers  33   n  and  33   p  of the light emitting elements  1  that are adjacent to each other in the direction perpendicular to the wiring direction. 
     By forming internal wiring by using the metal wire  32  with a large volume, such as a ribbon-shaped wire or a thick wire, in the above manner, the internal wiring can be formed with less time compared to a case of forming the internal wiring by plating method, and the productivity of the light emitting device may be increased. Furthermore, the material of the metal wire  32  is not particularly limited, but by using the metal wire  32  formed of metal such as Cu or Al, which are cheaper compared to Au, internal wiring with a large volume can be provided inexpensively. As a result, the heat dissipation property of the light emitting device can be improved. 
     Also, by forming the metal wires  32   n  and  32   p  by bending and wiring the metal wires  32  having a large cross-sectional area, internal wiring suitable for side-view mounting may be formed by using one metal wire  32  for electrodes of each polarities. Furthermore, the internal wiring formed of this metal wire  32  may be exposed at not only the side surfaces of the resin layer  31 , but also at the upper surface of the resin layer  31 , and is thus suitable also for top-view mounting. Also, by wiring the metal wire  32  while bending in a wave shape, the volume of metal in the supporting member  3  (resin layer  31 ) after completion may be made great. Moreover, also by wiring the metal wire  32  across adjacent light emitting elements  1 , the volume of metal in the supporting member  3  (resin layer  31 ) after completion can be made great. 
     Next, as shown in  FIGS. 12A and 12B , in the resin layer forming step S 104 , the resin layer  31  is formed by a compression molding method using a mold, a coating method such as a spin-coating method, or the like in such a way as to seal the light emitting elements  1 , the metal layers  33   n  and  33   p , and the metal wires  32 . At this time, the resin layer  31  is formed to have its upper surface at the position HA or higher in the Z-axis direction. 
     Next, in the surface machining step (internal wiring exposure step) S 105 , the resin layer  31  is machined from the upper surface, together with the metal wire  32  inside, down to a machining line  41  by using a machining device. Here, the height of the machining line  41  is a height corresponding to the upper surface of the trough portion of the metal wire  32  disposed in an arc shape. By machining the metal wire  32  down to this machining line  41 , the metal wire  32  can be made to expose at the upper surface of the resin layer  31  and also the upper surface of the metal wire  32  can be made flat, as shown in  FIGS. 13A and 13B . Also, at this time, the exposed surface of the metal wire  32  at the upper surface of the resin layer  31  and the upper surface of the resin layer are formed to have the same plane. 
     Next, as shown in  FIGS. 14A to 14C , in the half-dicing step (internal wiring exposure step) S 106 , grooves  31   a  and grooves  31   b  are formed from the upper surface side along the boundary lines  40 . The metal wire  32 , which is internal wiring disposed across adjacent light emitting elements  1 , is thereby cut at the part of the boundary line  40 , and is separated into the metal wires  32   n  and  32   p . Then, the end surfaces of the metal wires  32   n  and  32   p  which have been cut are exposed at respective side surfaces in the longitudinal direction and the lateral direction of the resin layer  31 . Also, the inner side surface of the groove  31   a  is made the upper side surface of the light emitting device  100  in the longitudinal direction, and the inner side surface of the groove  31   b  is made the upper side surface in the lateral direction. To expose, at the side surfaces of the resin layer  31 , the cut surfaces of the metal wire  32  in the manner described above as the side surfaces of the metal wires  32   n  and  32   p , at least the groove  31   a  is formed by dicing (half-dicing) a part of the resin layer  31  to be removed from the upper surface side of the resin layer  31  down to a predetermined depth. 
     Here, the groove  31   a  is formed to have such a width that a plating solution sufficiently spreads over the exposed surfaces of the metal wires  32   n  and  32   p  at the time of electroless plating in the external connection electrode forming step S 107  performed later. Additionally, in the half-dicing step S 106 , the groove  31   b  for forming the side surface in the lateral direction, which is not a mounting surface, may be formed by half-dicing with a different depth from that of the groove  31   a , and also, instead of forming the groove  31   b  in the half-dicing step S 106 , full-dicing of completely cutting in the thickness direction along the Y-axis direction may be performed in the singulation step S 110 . 
     Here, as shown in  FIGS. 14B and 14C , in the height direction (Z-axis direction), the position of the upper surfaces of the resin layer  31  and the metal wires  32   n  and  32   p  is at HA, the position of the lower end of the exposed surfaces of the metal wires  32   n  and  32   p  at the side surface in the longitudinal direction is at H B , the position of the bottom surface which is the lower end of the groove  31   a  (and the groove  31   b ) formed by half-dicing is at H G , and the position of the lower surface which is the lower end of the light emitting element  1  is at HE. 
     The lower limit (shallower limit) for a depth of the groove  31   a , that is, the shallower limit for the position H G , is the position H B . With the position Ho being lower than the position H B , the metal wire  32  may be completely cut and the cut surface may be exposed from the resin layer  31  at the side surface in the longitudinal direction. Furthermore, the position Ho is preferably at or lower than the position H C , which is the lower end of the metal wires  32   n  and  32   p . Then, the metal wires  32   n  and  32   p  may be completely cut and the cut surfaces may be exposed from the resin layer  31  also at the side surface in the lateral direction. 
     Also, the upper limit (deeper limit) for the position Ho is preferably at a position at which enough strength to maintain the wafer state may be obtained after the growth substrate  11  is removed in a later step. The upper limit for the position Ho may be determined as appropriate according to the rigidity of the resin. Additionally, in the case of keeping the growth substrate  11  as it is or reducing a thickness of the growth substrate  11  without removing the growth substrate  11 , or in the case of attaching, after the external connection electrode forming step S 107  and before removal of the growth substrate  11 , an adhesive sheet, as a supporting member for maintaining the wafer state, to the surface opposite the side where the growth substrate  11  is provided, the groove  31   a  and the groove  31   b  may be formed in such a way as to remove all of the resin layer  31  in the thickness direction. 
     Next, as shown in  FIGS. 15A and 15B , in the external connection electrode forming step S 107 , the external connection electrodes  34   n  and  34   p  made of Au films are formed by the electroless plating method on the exposed surfaces of the metal wires  32   n  and  32   p  at the upper surfaces and the side surfaces in the longitudinal direction and the lateral direction. Additionally, in the case where the metal wires  32   n  and  32   p  are not made of Au but made of Cu or Al, Ni films are preferably formed as lower layers before forming the Au films so as to increase the adhesiveness. In the case of providing the external connection electrodes  34   n  and  34   p  on only the exposed surfaces of the metal wires  32   n  and  32   p  in the above manner, the external connection electrodes  34   n  and  34   p  may be formed with ease by the electroless plating method. Additionally, a cross-section corresponding to line C-C in  FIG. 14A  is omitted from the drawings, but an n-side wiring structure is formed in a manner similar to that of the p-side wiring structure shown in  FIG. 15B . 
     Next, as shown in  FIG. 16 , in the growth substrate removal step S 108 , the growth substrate  11  is removed by an LLO (laser lift-off method) or a chemical lift-off method, for example. At this time, since the semiconductor stack  12  is reinforced by the supporting member  3  having the resin layer  31  as the main body, it may not be susceptible to damages such as splitting or cracking. Additionally, the growth substrate  11  may be thinned by rear-surface polishing instead of being removed. Also, an adhesive sheet may be attached as a supporting member for maintaining the wafer state on the upper surface side before removing the growth substrate  11 . 
     Moreover, as post-processing after removal of the growth substrate  11 , the lower surface of the semiconductor stack  12  which is exposed may be polished, and the protrusion-recess shape  12   c  (see  FIG. 4B ) may be formed by roughening the surface by a wet etching method, for example. Additionally, the growth substrate  11  which has been removed may be reused as the growth substrate  11  for allowing crystal growth of the semiconductor stack  12  by having a surface of the growth substrate  11  polished. 
     Next, as shown in  FIG. 17 , in the phosphor layer forming step (wavelength conversion layer forming step) S 109 , the phosphor layer  2  is formed on the lower surface side of the semiconductor stack  12 . As described above, the phosphor layer  2  may be formed by spraying a slurry in which a solution contains a resin and phosphor particles, for example. In the case where the semiconductor stack  12  at the boundary region of the light emitting elements  1  is entirely removed in the light emitting element preparation step S 101 , the entire surface of the semiconductor stack  12  is to be resin-sealed by the phosphor layer  2 , which is a layer formed of resin, and the resin layer  31 . 
     Lastly, in the singulation step S 110 , a groove  31   c  having a depth that reaches the lower surface of the groove  31   a  is formed as shown in  FIG. 18B  by dicing from the lower surface side of the phosphor layer  2  along the boundary line  40  (see  FIG. 17 ). Also with respect to the groove  31   b  extending in the Y-axis direction, a groove having a depth reaching the lower surface of the groove  31   b  is formed as shown in  FIG. 18A  by dicing from the lower surface side of the phosphor layer  2 . Singulation of the light emitting device  100  is performed in this manner. Additionally, in the case where the growth substrate  11  is kept without being removed, or in the case where the semiconductor stack  12  is present in the peripheral region of the boundary line  40 , the growth substrate  11  and the semiconductor stack  12  are also diced. 
     Here, that the groove  31   c  reaches the lower surface of the groove  31   a  means that the position H D  of the upper surface of the groove  31   c  is made the same or above the position Ho (see  FIG. 14B ) of the lower surface of the groove  31   a . The grooves  31   a  and  31   c  are thereby communicated with each other, and thus the light emitting device  100  is separated. 
     Moreover, the width of the groove  31   c  is preferably made wider than the groove  31   a , and the groove  31   a  is preferably formed being provided inside the groove  31   c  in plan view. Then, even if the center line of the groove  31   a  and the center line of the groove  31   c  are shifted from each other, singulation can be reliably performed, and moreover, a step is formed in such a way that the lower side surface of the light emitting device  100 , which is the inner side surface of the groove  31   c , will be on the inner side of the light emitting device  100  than the upper side surface of the light emitting device  100 , which is the inner side surface of the groove  31   a . Accordingly, at the side surface in the longitudinal direction, which is the mounting surface of the light emitting device  100 , the lower side surface will not be on the outer side than the upper side surfaces where the external connection electrodes  34   n  and  34   p  are provided. Therefore, the adhesion between the external connection electrodes  34   n  and  34   p  and the wiring pattern of a mounting substrate or the like is not impaired by the lower side surface at the time of mounting, and the light emitting device  100  may be mounted with high reliability. Also, with the step being formed, a space is created between the mounting surface of the mounting substrate and the lower side surface of the light emitting device  100 , and thus an adhesive material can be prevented from spreading to the phosphor layer  2  at the time of mounting. The light emitting device  100  shown in  FIG. 1  to  FIG. 3B  is completed by the steps described above. 
     Additionally, the width of the groove  31   c  can be made narrower than the width of the groove  31   a , and the groove  31   c  may be formed being provided inside the groove  31   a  in plan view. A step is thereby formed in such a way that the upper side surface of the light emitting device  100  is on the inner side than the lower side surface in plan view. By structuring the side surface which is the mounting surface of the light emitting device  100  in this manner, spreading of the adhesive material at the time of mounting can be prevented by the step, and thus the adhesive material can be prevented from spreading to the phosphor layer  2 . 
     That is, with respect to the side surfaces of the resin layer  31  where the external connection electrodes  34   n  and  34   p  are provided, the lower side surfaces which are surfaces including an end portion of the side (lower surface side) where the light emitting element  1  is provided and the upper side surfaces where the external connection electrodes  34   n  and  34   p  are provided are not on the same plane, and thus an adhesive material can be prevented from spreading to the phosphor layer  2 , which is the light extraction surface, at the time of mounting. 
     Modification Example of Manufacturing Method 
     Also, in the manufacturing method shown in  FIG. 7 , it is possible to perform the growth substrate removal step S 108  and the phosphor layer forming step S 109  after the resin layer forming step S 104 , and then perform the surface machining step S 105  to the external connection electrode forming step S 107 . Moreover, it is also possible to perform the growth substrate removal step S 108  and the phosphor layer forming step S 109  after the surface machining step S 105 , and then perform the half-dicing step S 106  and the external connection electrode forming step S 107 . 
     Moreover, in these example modifications, after the growth substrate removal step S 108  and the phosphor layer forming step S 109  are performed, an adhesive sheet as the supporting member for maintaining the wafer state may be attached on the side of the phosphor layer  2  and full-dicing may be performed on the resin layer  31  and the phosphor layer  2  along the boundary line  40  (see  FIGS. 14A to 14C ), and then the external connection electrode forming step S 107  may be performed. In this case, the light emitting device  100  is already singulated by the full-dicing of the resin layer  31  and the phosphor layer  2 , and thus the singulation step S 110  can be omitted. Also, the step portion  31   g  (see  FIG. 2B  and  FIGS. 3A and 3B ) is not formed on the side surface of the resin layer  31 . 
     Second Embodiment 
     Next, a light emitting device according to a second embodiment will be described with reference to  FIG. 19  and  FIGS. 20A and 20B . As shown in  FIG. 19  and  FIGS. 20A and 20B , a light emitting device  100 A according to the second embodiment is different from the light emitting device  100  according to the first embodiment shown in  FIG. 1  to  FIG. 3B  in that a supporting member  3 A is provided instead of the supporting member  3 . Structures the same as those of the light emitting device  100  according to the first embodiment will be denoted by the same reference signs, and description thereof will be omitted. 
     In contrast to the supporting member  3  according to the first embodiment where the upper surfaces of the metal wires  32   n  and  32   p  are flat, the metal wires  32   n  and  32   p  of the supporting member  3 A according to the second embodiment have the upper portions bifurcated in the lateral direction with the bifurcated top portions exposed from the resin layer  31 . The bifurcated structure of the upper portions of the metal wires  32   n  and  32   p  of the supporting member  3 A are formed by setting, in the surface machining step S 105  of the manufacturing method according to the first embodiment, the height of the machining line  41  to be higher than the upper surface of the trough portion of the metal wire  32  disposed in an arc shape. In other words, they are formed by machining the metal wire  32  as well as the resin layer  31  to the height at which the ridge portion of the metal wire  32  disposed in an arc shape is exposed. Thus, the trough portion of the metal wire  32  disposed in an arc shape is covered by the resin layer  31 . Also, the position HE of the lower end of the exposed surfaces of the metal wires  32   n  and  32   p  at the side surfaces in the longitudinal direction is the same as that in the first embodiment. 
     Although the upper side structure of the metal wires  32   n  and  32   p  which are the internal wiring on the upper layer side is different, the light emitting device  100 A according to the second embodiment allows top-view mounting with the upper surface of the light emitting device  100 A as the mounting surface. Also, as in the first embodiment, the light emitting device  100 A allows side-view mounting with one of the side surfaces in the longitudinal direction as the mounting surface. Moreover, the resin layer  31  according to the second embodiment is formed to be thicker than the resin layer  31  according to the first embodiment, and thus the side surfaces of the supporting member are greater. Accordingly, the light emitting device  100 A allows stable side-view mounting with this wide side surface as the mounting surface. 
     Additionally, the light emitting device  100 A is different from the light emitting device  100  according to the first embodiment in only the shape of the metal wires  32   n  and  32   p , which are the internal wiring, and description of the operation will be omitted. Also, as described above, the light emitting device  100 A may be manufactured by changing the height of the machining line  41  in the surface machining step S 105  according to the first embodiment, and detailed description regarding the manufacturing method will be omitted. 
     Third Embodiment 
     Next, a light emitting device according to a third embodiment will be described with reference to  FIG. 21  and  FIGS. 22A and 22B . As shown in  FIG. 21  and  FIGS. 22A and 22B , a light emitting device  100 B according to the third embodiment is different from the light emitting device  100 A according to the second embodiment shown in  FIG. 19  and  FIGS. 20A and 20B  in that a supporting member  3 B is provided instead of the supporting member  3 A. Structures the same as those of the light emitting device  100 A according to the second embodiment will be denoted by the same reference signs, and description thereof will be omitted. 
     As described above, according to the supporting member  3 A of the second embodiment, the external connection electrodes  34   n  and  34   p  are provided to cover only the exposed surfaces of the metal wires  32   n  and  32   p  at the upper surface and the side surfaces. On the other hand, according to the supporting member  3 B of the third embodiment, the external connection electrodes  34   n  and  34   p  are provided to extend over and cover not only the exposed surfaces of the metal wires  32   n  and  32   p  at the upper surface and the side surfaces but also the surfaces of the resin layer  31  near the exposed surfaces. 
     The external connection electrodes  34   n  and  34   p  are provided to cover, at the upper surface, the bifurcated exposed surfaces of the metal wires  32   n  and  32   p  exposed from the resin layer  31 , and to cover, for each polarity, the upper surface of the resin layer  31  between the bifurcated exposed surfaces. Furthermore, the external connection electrodes  34   n  and  34   p  are provided to extend, at the upper surface and the side surfaces in the longitudinal direction of the resin layer  31 , in a direction the external connection electrodes  34   n  and  34   p  facing each other (X-axis direction) of the metal wires  32   n  and  32   p . Still further, the external connection electrodes  34   n  and  34   p  are provided to cover, at the side surfaces in the lateral direction, the side surfaces of the resin layer  31  corresponding to the trough portions of the arc shape of the exposed surfaces of the metal wires  32   n  and  32   p . That is, the external connection electrodes  34   n  and  34   p  are each provided to cover, in a box shape, four surfaces at the corner of the supporting member  3 B. 
     Also, the external connection electrode  34   n  includes a triangular notch  34   a  at a part of a side facing the external connection electrode  34   p  on the upper surface. This notch  34   a  is for identifying the polarity of a n-side electrode of the light emitting device  100 B. In the present embodiment, the notch is provided to identify an n-side polarity, but instead a notch  31   p  may be provided to the external connection electrode  34   p  to indicate a p-side polarity. 
     As with the light emitting device  100 A, the light emitting device  100 B allows top-view mounting with the upper surface as the mounting surface, and also allows side-view mounting with one of the side surfaces in the longitudinal direction as the mounting surface. Moreover, in the case of top-view mounting, since the external connection electrodes  34   n  and  34   p  are provided on the upper surface, which is the mounting surface, to extend over the upper surface of the resin layer  31 , the external connection electrodes  34   n  and  34   p  are able to bond with the mounting substrate more strongly than in the light emitting device  100 A. Furthermore, heat generated by the light emitting element  1  may be efficiently transferred to the outside via the external connection electrodes  34   n  and  34   p  provided over a wider area, and the heat dissipation property can be improved. The operation of the light emitting device  100 B is similar to that of the light emitting device  100  and the like described above, and description thereof will be omitted. 
     The light emitting device  100 B according to the third embodiment can be manufactured by forming the external connection electrodes  34   n  and  34   p , in the external connection electrode forming step S 107  in the manufacturing method of the light emitting device  100 A according to the second embodiment described above, by a sputtering method using a resist pattern instead of the electroless plating method. The light emitting element preparation step S 101  to the half-dicing step S 106  are carried out in the same manner as in the second embodiment. That is, the metal wires  32   n  and  32   p  are exposed at the upper surface and the side surfaces of the resin layer  31  by performing the surface machining step S 105  and the half-dicing step S 106 . 
     Next, in the external connection electrode forming step S 107 , a resist pattern having openings at regions where the external connection electrodes  34   n  and  34   p  are to be provided at the upper surface and the side surfaces and masking other regions is formed, and then a metal film is formed by the sputtering method. Then, by removing (lifting off) the resist pattern, patterning of the external connection electrodes  34   n  and  34   p  is performed. At this time, a metal film is formed as the external connection electrodes  34   n  and  34   p  on the exposed surfaces of the metal wires  32   n  and  32   p  and the peripheral surface therearound of a predetermined area on the resin layer  31 . Also, by further performing electroless plating after patterning of this metal film, strong external connection electrodes  34   n  and  34   p  can be formed. 
     Additionally, to form a resist pattern on the inner surfaces of the grooves  31   a  and  31   b  formed in the half-dicing step S 106 , a coating device (for example, Q-jet (registered trademark) series of Engineering System Co., Ltd.) can be suitably used that allows for highly accurate coating by ejecting a high-viscosity resist material by an electrostatic ejection method. The resist pattern can also be formed by using a photolithography method. 
     By forming the external connection electrodes  34   n  and  34   p  by a sputtering method using a resist pattern, which is a mask, in combination as described above, the external connection electrodes  34   n  and  34   p  can be formed over a wide area to extend over the side surfaces and the upper surface of the resin layer  31 , in addition to the exposed surfaces of the metal wires  32   n  and  32   p , which are the internal wiring. 
     The growth substrate removal step S 108  to the singulation step S 110  are similar to those in the second embodiment, and description thereof will be omitted. 
     Fourth Embodiment 
     Next, a light emitting device according to a fourth embodiment will be described with reference to  FIG. 23  and  FIGS. 24A and 24B . As shown in  FIG. 23  and  FIGS. 24A and 24B , a light emitting device  100 C according to the fourth embodiment is different from the light emitting device  100 B according to the third embodiment shown in  FIG. 21  and  FIGS. 22A and 22B  in that a supporting member  3 C is provided instead of the supporting member  3 B. Structures the same as those of the light emitting device  100 B according to the third embodiment will be denoted by the same reference signs, and description thereof will be omitted. 
     As described above, according to the supporting member  3 B of the third embodiment, the external connection electrodes  34   n  and  34   p  are provided to extend over and cover the exposed surfaces of the metal wires  32   n  and  32   p  at the upper surface and the side surfaces and the surface of the resin layer  31  near these exposed surfaces. On the other hand, according to the supporting member  3 C of the fourth embodiment, the external connection electrodes  34   n  and  34   p  are provided to extend over and cover the exposed surfaces of the metal wires  32   n  and  32   p  at the upper surface and the surface of the resin layer  31  near these exposed surfaces. Accordingly, the external connection electrodes  34   n  and  34   p  are not provided at the side surfaces in the longitudinal direction and the lateral direction, and the metal wires  32   n  and  32   p  remain exposed from the resin layer  31 . 
     Accordingly, the present embodiment has a structure suitable for top-view mounting with the upper surface as the mounting surface. Also, although the external connection electrodes  34   n  and  34   p  are not provided on the side surfaces in the longitudinal direction, side-view mounting can also be performed with the exposed surfaces of the metal wires  32   n  and  32   p  at the side surfaces in the longitudinal direction as bonding sections. As in the present embodiment, it is possible to provide the external connection electrodes  34   n  and  34   p  at only the necessary regions by taking the manner of mounting into account. The operation of the light emitting device  100 C is similar to that of the light emitting device  100  and the like described above, and description thereof will be omitted. 
     The light emitting device  100 C according to the fourth embodiment can be manufactured by the manufacturing method of the light emitting device  100 B according to the third embodiment described above without the half-dicing step S 106 . That is, after causing the upper surfaces of the metal wires  32   n  and  32   p  to be exposed in the surface machining step S 105 , the external connection electrode forming step S 107  is performed to thereby form the external connection electrodes  34   n  and  34   p  only at the upper surface. Also, in the fourth embodiment, the light emitting device  100 C can be singulated by performing full-dicing on the resin layer  31  and the phosphor layer  2  along the boundary line  40  (for example, see  FIGS. 8A to 8D ) in the singulation step S 110 . Other steps are the same as those of the third embodiment, and description thereof will be omitted. 
     Fifth Embodiment 
     Next, a light emitting device according to a fifth embodiment will be described with reference to  FIG. 25  and  FIGS. 26A and 26B . As shown in  FIG. 25  and  FIGS. 26A and 26B , a light emitting device  100 D according to the fifth embodiment is different from the light emitting device  100 A according to the second embodiment shown in  FIG. 19  and  FIGS. 20A and 20B  in that a supporting member  3 D is provided instead of the supporting member  3 A. Structures the same as those of the light emitting device  100 A according to the second embodiment will be denoted by the same reference signs, and description thereof will be omitted. 
     According to the supporting member  3 A of the second embodiment, the external connection electrodes  34   n  and  34   p  are provided to cover the exposed surfaces of the metal wires  32   n  and  32   p  at the upper surface and the side surfaces as described above. On the other hand, according to the supporting member  3 D of the fifth embodiment, the entire upper surfaces of the metal wires  32   n  and  32   p  are covered by the resin layer  31 . The external connection electrodes  34   n  and  34   p  are provided to cover only the exposed surfaces of the metal wires  32   n  and  32   p  at the side surfaces in the longitudinal direction and the lateral direction. 
     Accordingly, the supporting member  3 D of the fifth embodiment has a structure suitable for side-view mounting with one of the side surfaces in the longitudinal direction as the mounting surface. By forming a thick resin layer  31 , the side surfaces may be formed to be wide, and more stable side-view mounting is allowed with a wide side surface in the longitudinal direction as the mounting surface. The operation of the light emitting device  100 D is similar to that of the light emitting device  100  and the like described above, and description thereof will be omitted. 
     The light emitting device  100 D according to the fifth embodiment can be manufactured by the manufacturing method of the light emitting device  100 A according to the second embodiment described above without the surface machining step S 105 . Alternatively, it is also possible to perform surface-machining in the surface machining step S 105  to adjust the height of the resin layer  31  within a range where the upper surfaces of the metal wires  32   n  and  32   p  are not exposed. Also, in the external connection electrode forming step S 107 , the external connection electrodes  34   n  and  34   p  may be formed only at the exposed surfaces of the metal wires  32   n  and  32   p  that are exposed at the side surfaces of the resin layer  31  by the electroless plating method. Other steps are the same as those of the second embodiment, and description thereof will be omitted. 
     Sixth Embodiment 
     Next, a light emitting device according to a sixth embodiment will be described with reference to  FIG. 27  and  FIGS. 28A and 28B . As shown in  FIG. 27  and  FIGS. 28A and 28B , a light emitting device  100 E according to the sixth embodiment is different from the light emitting device  100 D according to the fifth embodiment shown in  FIG. 25  and  FIGS. 26A and 26B  in that a supporting member  3 E is provided instead of the supporting member  3 D. Structures the same as those of the light emitting device  100 D according to the fifth embodiment will be denoted by the same reference signs, and description thereof will be omitted. 
     As described above, according to the supporting member  3 D of the fifth embodiment, the entire upper surfaces of the metal wires  32   n  and  32   p  are covered by the resin layer  31 , and the external connection electrodes  34   n  and  34   p  are provided to cover only the exposed surfaces of the metal wires  32   n  and  32   p  at the side surfaces in the longitudinal direction and the lateral direction. On the other hand, according to the supporting member  3 E of the sixth embodiment, the external connection electrodes  34   n  and  34   p  are provided to extend over the exposed surfaces of the metal wires  32   n  and  32   p  at the side surfaces in the longitudinal direction and the lateral direction, and also extend to the entire surface of the resin layer  31  higher than these exposed surfaces and the upper surface. Accordingly, the light emitting device  100 E is structured to enable top-view mounting with the upper surface as the mounting surface as well as side-view mounting with one of the side surfaces in the longitudinal direction as the mounting surface. The operation of the light emitting device  100 E is similar to that of the light emitting device  100  and the like described above, and description thereof will be omitted. 
     The light emitting device  100 E according to the sixth embodiment can be manufactured by the manufacturing method of the light emitting device  100 B according to the third embodiment described above without the surface machining step S 105 . Alternatively, it is also possible to perform surface-machining in the surface machining step S 105  to adjust the height of the resin layer  31  within a range where the upper surfaces of the metal wires  32   n  and  32   p  are not exposed. Also, in the external connection electrode forming step S 107 , the external connection electrodes  34   n  and  34   p  can be formed, by a sputtering method using a resist pattern, to extend over the exposed surfaces of the metal wires  32   n  and  32   p  that are exposed at the side surfaces of the resin layer  31 , and also over the surface of the resin layer higher than these exposed surfaces and the upper surface. Other steps are the same as those of the third embodiment, and description thereof will be omitted. 
     Seventh Embodiment 
     Next, a light emitting device according to a seventh embodiment will be described with reference to  FIG. 29  and  FIGS. 30A and 30B . As shown in  FIG. 29  and  FIGS. 30A and 30B , a light emitting device  100 F according to the seventh embodiment is different from the light emitting device  100 D according to the fifth embodiment shown in  FIG. 25  and  FIGS. 26A and 26B  in that a supporting member  3 F is provided instead of the supporting member  3 D. Structures the same as those of the light emitting device  100 D according to the fifth embodiment will be denoted by the same reference signs, and description thereof will be omitted. 
     As described above, according to the supporting member  3 D of the fifth embodiment, the entire upper surfaces of the metal wires  32   n  and  32   p  are covered by the resin layer  31 , and the external connection electrodes  34   n  and  34   p  are provided to cover only the exposed surfaces of the metal wires  32   n  and  32   p  at the side surfaces in the longitudinal direction and the lateral direction. On the other hand, according to the supporting member  3 F of the seventh embodiment, the external connection electrodes  34   n  and  34   p  are provided to cover the exposed surfaces of the metal wires  32   n  and  32   p  at the side surfaces in the longitudinal direction and the lateral direction, and also metal films  35   n  and  35   p  are provided on the upper surface. The metal films  35   n  and  35   p  provided on the upper surface are not electrically conducted with the external connection electrodes  34   n  and  34   p  and the metal wires  32   n  and  32   p , and are electrically floating metal films. 
     Accordingly, the light emitting device  100 F has a structure that is suitable for side-view mounting with one of the side surfaces in the longitudinal direction as the mounting surface. Also, by forming a thick resin layer  31 , the light emitting device  100 F may be stably bonded to the mounting substrate at the time of side-view mounting. Furthermore, with an adhesive material that is supplied to the external connection electrodes  34   n  and  34   p  provided on the side surfaces in the longitudinal direction extending over the surface of the resin layer  31  to the metal films  35   n  and  35   p  formed on the upper surface at the time of side-view mounting, the bondability can be increased. For this reason, the metal films  35   n  and  35   p  are preferably provided to extend to regions within a predetermined distance (for example, 100 μm) from the side surface in the longitudinal direction. 
     Additionally, as with the notch  34   a  (for example, see  FIG. 27 ), a triangular notch  35   a  formed at one side of the metal film  35   n  is for identifying that the external connection electrode  34   n  provided near the notch  35   a  is of an n-side polarity. The operation of the light emitting device  100 F is similar to that of the light emitting device  100  and the like described above, and description thereof will be omitted. 
     The light emitting device  100 F according to the seventh embodiment can be manufactured by changing the manufacturing method of the light emitting device  100 D according to the fifth embodiment in the following manner. That is, the metal films  35   n  and  35   p  are formed on the upper surface by a sputtering method using a resist pattern before the half-dicing step S 106 . Then, the half-dicing step S 106  is performed to cause the metal wires  32   n  and  32   p  to be exposed at the side surfaces of the resin layer  31 , and by performing electroless plating in the external connection electrode forming step S 107 , the external connection electrodes  34   n  and  34   p  are formed on the exposed surfaces of the metal wires  32   n  and  32   p . The metal films  35   n  and  35   p  can be made strong by the electroless plating at this time. Other steps are the same as those of the fifth embodiment, and description thereof will be omitted. 
     Furthermore, the light emitting device  100 F can be formed by the same manufacturing method as the light emitting device  100 E according to the sixth embodiment. In this case, a resist pattern is formed in the external connection electrode forming step S 107  in such a way as to mask regions between the metal films  35   n ,  35   p  and the external connection electrodes  34   n ,  34   p  to thereby form electrically floating metal films  35   n  and  35   p.    
     Example Modification 
     The following structures are also allowed with respect to the light emitting devices  100  to  100 F according to the embodiments described above. The metal wires  32   n  and  32   p  may be directly bonded on the n-side electrode  13  and the p-side electrode  15  without the metal layers  33   n  and  33   p  being provided. Also, the exposed surfaces of the metal wires  32   n  and  32   p  from the resin layer  31  may be made the bonding sections for external connection without the external connection electrodes  34   n  and  34   p  being provided. Furthermore, the external connection electrodes  34   n  and  34   p  may be provided to cover all or a part of the surfaces of the metal wires  32   n  and  32   p  exposed from the resin layer  31 , or may be provided to extend over the surface of the resin layer  31 . Still further, the metal wires  32   n  and  32   p  may be covered by the resin layer  31  at the side surfaces in the lateral direction, which are not to be used as the mounting surface, so as not to be exposed. Moreover, the phosphor layer  2  does not have to be provided, and a light-transmissive resin layer may be provided instead of the phosphor layer  2 . Also, the phosphor layer  2  may be provided on the lower surface side of the growth substrate  11  without removing the growth substrate  11 . 
     Heretofore, the light emitting device according to the present disclosure and the manufacturing method thereof have been specifically described with reference to the embodiments, but the spirit of the present invention is not to be limited by these descriptions, and is to be interpreted in a broad sense based on the claims. Also, it is needless to say that various changes, modifications and the like based on these descriptions are also included within the spirit of the present invention. 
     According to the light emitting device of an embodiment of the present invention, the volume of metal inside a resin layer may be increased, and thus, the heat conductivity of a supporting member having the resin layer as the main body is increased, and as a result, the heat dissipation property of the light emitting device may be improved. Also, according to the manufacturing method of a light emitting device of an embodiment of the present invention, a light emitting device having the structure described above may be manufactured with high productivity by a simple process of forming internal wiring by wiring a metal wire so as to commonly connect the electrodes of semiconductor light emitting elements arranged in one direction and of performing singulation by cutting along a boundary line. 
     Obviously, numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.