Abstract:
Provided is an LED device presenting minimal risk of bottom-surface contamination even when foreign substances such as liquids adhere thereto. The LED device has an LED die, a submount substrate on the surface of which the LED die is mounted, a frame-shaped electrode disposed along the outer circumferential part of the bottom surface of the submount substrate, and an inner-side electrode surrounded by the frame-shaped electrode and connected to the electrode of the LED die. In the LED device, the frame-shaped electrode is disposed along the entire outer circumferential part of the bottom surface. In an LED device, the bottom surface is rectangular, and the frame-shaped electrode is disposed along three sides of the bottom surface.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to an LED device. 
       BACKGROUND 
       [0002]    An LED device is known, in which an LED in a bare chip state (hereinafter, also referred to as an LED die) is mounted onto a submount substrate and which is packaged by coating with a resin or the like. The submount substrate is a small-sized substrate that is inserted between the LED die and a large-sized substrate (hereinafter, also referred to as a mother substrate) on which other electronic parts, such as resistors capacitors, are mounted, and the submount substrate is also referred to as an interposer. The submount substrate includes an anode electrode and a cathode electrode on the bottom in opposition to the surface of the mother substrate (e.g., see Patent Document 1). 
         [0003]      FIG. 14  is a perspective view of a conventional semiconductor package corresponding to FIG. 1 of Patent Document 1, and  FIG. 15  is a bottom view of a conventional semiconductor package corresponding to FIG. 4 of Patent Document 1. 
         [0004]    An LED device (semiconductor package)  20  has a submount substrate (wire substrate)  10  and an LED die (LED element)  61  flip-chip-mounted on the submount substrate. Bumps  61   a  and  61   b  joined to the cathode electrode and the anode electrode, respectively, of the LED die are provided on the bottom of the LED die  61 . The submount substrate  10  has a ceramic substrate  11  and a pair of electrodes  12  and  13  arranged on the ceramic substrate  11 . Each of the pair of electrodes  12  and  13  has surface electrodes  12   a  and  13   a,  side electrodes  12   b  and  13   b  (not illustrated), and bottom electrodes  12   c  and  13   c  and those electrodes function as the anode electrode and the cathode electrode of the LED device  20 . The LED die  61  is joined to land portions that are formed on the surface electrodes  12   a  and  13   a,  respectively, of the pair of electrodes  12  and  13  via the bumps  61   a  and  61   b.    
         [0005]    Further, pairs of recesses  11   a  and  11   b  and vias  11   c  and  11   d  are formed in the submount substrate  10 . The side electrodes  12   b  and  13   b  are arranged in the pair of recesses  11   a  and  11   b,  and the vias  11   c  and  11   d  conduct heat generated in the LED die  61  from the surface of the submount substrate to the bottom. 
         [0006]    The bottom electrodes  12   c  and  13   c  having identical shapes and the identical areas are arranged on the bottom of the LED device  20 . The size and spacing of the upper-side electrodes  12   a  and  12   b  are determined by the electrode specifications (design rules, mounting accuracy, etc.) of the LED die  61 , whereas the size and spacing of the bottom electrodes  12   c  and  13   c  are determined by the mounting specifications of the mother substrate. 
       CITATION LIST 
     Patent Literature 
       [0007]    [Patent Document 1] Japanese Laid Open Patent Document No. 2005-191097 (FIGS. 1 and 4) 
       SUMMARY 
     Technical Problem 
       [0008]    The bottom of the conventional LED device (semiconductor package)  20  illustrated in  FIG. 14  may be stained, if a liquid is attached to the mother substrate on which the LED device is mounted when the LED device is mounted on the mother substrate. Foreign matter, such as a liquid, which is attached to the bottom of the LED device may cause migration and a short circuit between the electrodes of the LED device. 
         [0009]    The object of present invention is to solve the above problem, i.e., to provide an LED device whose bottom is not stained, even if foreign matter, such as a liquid, is attached. 
       Solution to Problem 
       [0010]    The LED device of the present invention has an LED die, a submount substrate on the surface of which the LED die is mounted, a frame-shaped electrode arranged along the periphery of the bottom of the submount substrate, and an inside electrode surrounded by the frame-shaped electrode and connected to the electrode of the LED die. 
         [0011]    When the LED device is mounted on the mother substrate, the frame-shaped electrode and the inside electrode are connected to the wire electrode on the mother substrate by solder. Solder used to join the frame-shaped electrode to the mother substrate exists along the periphery of the bottom of the submount substrate that forms the bottom of the LED device, and therefore the sides along which the frame-shaped electrode is arranged on the bottom of the submount substrate are sealed. Thus, in the LED device mounted on the mother substrate, foreign matter, such as a liquid, no longer invades the bottom of the LED device through the sides along which the frame-shaped electrode is arranged. 
         [0012]    In the LED device of the present invention, the frame-shaped electrode may be arranged across the entire periphery of the bottom. 
         [0013]    In the LED device of the present invention, the shape of the bottom is rectangular and the frame-shaped electrode may be arranged along the three sides of the bottom. 
         [0014]    In the LED device of the present invention, the frame-shaped electrode may be connected to the electrode of the LED die. 
         [0015]    In the LED device of the present invention, the frame-shaped electrode may be connected to the ground wire that is formed on the mother substrate on which the LED device is mounted. 
         [0016]    The LED device of the present invention may have at least two inside electrodes. 
         [0017]    In the LED device of the present invention, the LED dies may be a red light-emitting LED die, a green light-emitting LED die, and a blue light-emitting LED die. 
       Advantageous Effects of Invention 
       [0018]    The LED device of the present invention includes a frame-shaped electrode that is arranged along the periphery of the bottom, and therefore the bottom of the LED device may be prevented from being stained by sealing the sides along which the frame-shaped electrode is arranged on the bottom of the LED device that is mounted on the mother substrate. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0019]      FIG. 1  is a perspective view of an LED device of a first embodiment; 
           [0020]      FIG. 2  is a perspective view illustrating the state where the LED device illustrated in  FIG. 1  is mounted on a mother substrate; 
           [0021]      FIG. 3A  is an external view of the LED device illustrated in  FIG. 1 ; 
           [0022]      FIG. 3B  is an external view of the LED device illustrated in  FIG. 1 ; 
           [0023]      FIG. 3C  is an external view of the LED device illustrated in  FIG. 1 ; 
           [0024]      FIG. 4  is a section view of the LED device illustrated in  FIG. 1 ; 
           [0025]      FIG. 5A  is a bottom view of the LED device of a second embodiment; 
           [0026]      FIG. 5B  is a view illustrating a mounted state of the LED device illustrated in  FIG. 5A ; 
           [0027]      FIG. 6A  is a bottom view of the LED device of a third embodiment; 
           [0028]      FIG. 6B  is a view illustrating a mounted state of the LED device illustrated in  FIG. 6A ; 
           [0029]      FIG. 7  is a circuit diagram of the LED device illustrated in  FIG. 6A ; 
           [0030]      FIG. 8A  is a bottom view of the LED device of a forth embodiment; 
           [0031]      FIG. 8B  is a section view illustrating a mounted state of the LED device illustrated in  FIG. 8A ; 
           [0032]      FIG. 9  is a bottom view of the LED device of a fifth embodiment; 
           [0033]      FIG. 10  is a bottom view of a sixth embodiment; 
           [0034]      FIG. 11  is a bottom view of the LED device of a seventh embodiment; 
           [0035]      FIG. 12A  is a bottom view of the a perspective view of a eighth embodiment; 
           [0036]      FIG. 12B  is a bottom view of the LED device illustrated in  FIG. 12A ; 
           [0037]      FIG. 13  is a plan view illustrating a solder pattern that is formed on the mother substrate on which the LED device illustrated in  FIG. 12A  is mounted; 
           [0038]      FIG. 14  is a perspective view of a conventional LED device; and 
           [0039]      FIG. 15  is a bottom view of a conventional LED device illustrated in  FIG. 14 . 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0040]    Hereinafter, with reference to  FIGS. 1 to 13  of the attached drawings, preferred embodiments of the present invention are explained in detail. In the explanation of the drawings, identical symbols are used for the identical or corresponding element, and therefore duplicated explanation is omitted. Further, the scale of the members has been changed appropriately for explanation. 
       First Embodiment 
       [0041]      FIG. 1  is a perspective view of an LED device  1  of a first embodiment. The LED device  1  has a reflection layer  2  that is arranged on the uppermost part, a phosphor layer  3  that is arranged beneath the reflection layer  2 , a submount substrate  4  that is arranged beneath the phosphor layer  3 , and a frame-shaped electrode  5  that is arranged beneath the submount substrate  4 . 
         [0042]      FIG. 2  is a perspective view illustrating the state where the LED device  1  of the first embodiment is mounted on a mother substrate  7 . The LED device  1  is connected to a wire electrode, not illustrated, which is formed on the mother substrate  7 , by solder  6 . The solder  6  forms a fillet and surrounds the LED device  1 . 
         [0043]      FIGS. 3A to 3C  are external views of the LED device  1  of the first embodiment and  FIG. 3A  is a plan view of the LED device  1 ,  FIG. 3B  is a front view of the LED device  1 , and  FIG. 3C  is a bottom view of the LED device  1 . The reflection layer  2  is seen from the surface direction of the LED device  1 . The frame-shaped electrode  5 , the submount substrate  4  on which the frame-shaped electrode  5  is formed, and the phosphor layer  3  and the reflection layer  2  stacked on the submount substrate  4 , respectively, are seen from the front direction of the LED device  1 . The frame-shaped electrode  5  that is formed and arranged so as to surround the periphery of the bottom of the submount substrate  4 , and an inside electrode  8  that is surrounded by the frame-shaped electrode  5  are seen from the bottom direction of the LED device  1 . The bottom of the submount substrate  4  is seen between the frame-shaped electrode  5  and the inside electrode  8 . 
         [0044]      FIG. 4  is a section view along AA line in  FIG. 2 . Surface electrodes  4   a  and  4   b  are formed on the surface of the submount substrate  4 , and through holes  4   c  and  4   d  that penetrate through from the surface to the bottom are formed in the submount substrate  4 . The surface electrode  4   a  is connected to the frame-shaped electrode  5  via the through hole  4   c,  and the surface electrode  4   b  is connected to the inside electrode  8  via the through hole  4   d.  An LED die  9  is die-bonded to the surface of the surface electrode  4   b.  A wire  9   a  connects the electrode of the LED die  9  and the surface electrodes  4   a  and  4   b.  The LED die  9  and the wire  9   a  are coated by the phosphor layer  3 . The reflection layer  2  is arranged on the phosphor layer  3 . Wire electrodes  7   a  and  7   b  are formed on the surface of the mother substrate  7 . The wire electrode  7   a  is connected to the frame-shaped electrode  5  via the solder  6  and the wire electrode  7   b  is connected to the inside electrode  8  via the solder  6 . 
         [0045]    The material that forms the submount substrate  4  is selected from among insulting materials whose thermal conductivity is high. In the present embodiment, alumina whose thermal conductivity is excellent and whose reflectance is high is used as the material that forms the submount substrate  4 . When the reflection layer is arranged on the surface of the submount substrate  4 , aluminum nitride whose reflectance is low and whose thermal conductivity is high may be used as the material that forms the submount substrate  4 . Further, a resin or a metal substrate whose surface has been subjected to insulation processing may be used as the material of the submount substrate  4 . 
         [0046]    Each of the surface electrodes  4   a  and  4   b,  the frame-shaped electrode  5 , and the inside electrode  8  is formed by stacking Ni and Au on Cu. The hollow part of the through holes  4   c  and  4   d  is filled with an electrically conductive member, such as cupper paste. The LED die  9  is a blue light-emitting diode and includes a sapphire substrate and a semiconductor layer that is stacked on the sapphire. The thickness of the sapphire substrate is about 150 μm and the thickness of the semiconductor layer is slightly less than 10 μm. The semiconductor layer includes an n-type GaN layer and a p-type GaN layer that is stacked on the n-type GaN layer, and the boundary part between the n-type GaN layer and the p-type GaN layer functions as a light-emitting layer. Further, the n-type GaN layer is connected to the cathode of the LED die  9  and the p-type GaN layer is connected to the anode of the LED die  9 . 
         [0047]    The phosphor layer  3  is formed by curing silicone kneaded with phosphor. The reflection layer  2  is formed by curing silicone kneaded with alumina or titanium oxide. The reflection layer  2  may be a metal plate or a reflecting tape. Light emitted from the LED die  9  is reflected from the surface of the submount substrate  4  and from the reflection layer  2 , and is emitted from the side of the LED device  1  after propagating through the phosphor layer  3 . Part of the light that is emitted from the LED die  9  is wavelength-converted by the phosphor included in the phosphor layer  3   
         [0048]    Since the perimeter of the bottom of the LED device  1  is sealed with the solder  6 , foreign matter, such as a stained liquid, is not likely to invade the bottom. Since the chances are low that the bottom of the LED device  1  is stained by foreign matter, such as a stained liquid, chances are low that a short circuit occurs between the electrodes of the LED device  1 , and chances are low that migration will occur between the inside electrode  8  and the frame-shaped electrode  5 . When the inventors of the invention of the application attached salt as a stained liquid to the mother substrate mounting the LED device  1 , no short circuit occurred between the electrodes of the LED device  1 . 
       Second Embodiment 
       [0049]    In the LED device  1  of the first embodiment illustrated in  FIGS. 1 to 4 , the frame-shaped electrode  5  is connected to one of the electrodes of the anode and the cathode of the LED die  9 , and the inside electrode  8  is connected to the other electrode of the anode and the cathode. However, in an LED device of some kind of embodiments, although electrodes arranged on the bottom are connected to the anode and the cathode, its frame-shaped electrode may be connected to neither the anode nor the cathode. With reference to  FIGS. 5A and 5B , an LED device  50  of a second embodiment, in which the frame-shaped electrode is connected to neither the anode nor the cathode, is explained as the second embodiment. 
         [0050]      FIG. 5A  is a bottom view of the LED device  50  of the second embodiment and  FIG. 5B  is a section view along AA line in  FIG. 5A . An LED die  59 , a phosphor layer  53 , and a reflection layer  52  are arranged on a submount substrate  54  in the LED device  50 , as in the LED device  1  of the first embodiment. However, since the LED device  50  has the identical external view as that of the LED device  1 , a perspective view illustrating the external view of the LED device  50  is not provided (regarding embodiments to be explained below, a perspective view illustrating the external view is not provided). 
         [0051]    A frame-shaped electrode  55  is arranged on the periphery of the bottom of the LED device  50 , and two inside electrodes  58   a  and  58   b  are arranged inside the frame-shaped electrode  55 . The frame-shaped electrode  55  is connected to a ground wire  57   a  of a mother substrate  57 , and the frame-shaped electrode  55  is not connected to the LED die  59  that is mounted on the submount substrate  54 . The inside electrode  58   a  is connected to the anode of the LED device  59  via a through hole  54   d,  a surface electrode  54   a,  and a wire. The inside electrode  58   b  is connected to the cathode of the LED die  59  via a through hole  54   c,  a surface electrode  54   b,  and a wire  59   a.    
         [0052]    When the LED device  50  is mounted on the mother substrate  57 , since the voltage level of the frame-shaped electrode  55  that is formed on the periphery of the bottom is the ground level, and the frame-shaped electrode  55  is not connected to the LED die  59 , static electricity may not affect the LED device  50 . 
       Third Embodiment 
       [0053]    In the LED devices  1  and  50  of the first and second embodiments, one LED die (the LED die  9  in the LED device  1  (see  FIG. 4 )) is mounted on the submount substrates  4  and  54 . However, the number of LED dies that are mounted on the submount substrate is not limited to one. With reference to  FIGS. 6A and 6B  and  FIG. 7 , an LED device  60  in which three LED dies are mounted on a submount substrate  64  is explained as a third embodiment. 
         [0054]      FIG. 6A  is a bottom view of the LED device  60 ,  FIG. 6B  is a section view along AA line in  FIG. 6A , and  FIG. 7  is a circuit diagram of the LED device  60 . In the LED device  60 , LED dies  71 ,  72 , and  73 , a phosphor layer  63 , and a reflection layer  62  are arranged on the submount substrate  64 . A frame-shaped electrode  65  is arranged on the periphery of the bottom of the LED device  60 , and three inside electrodes  68   a,    68   b,  and  68   c  are arranged inside the frame-shaped electrode  65 . The three inside electrodes  68   a,    68   b,  and  68   c  are arranged so as to form an isosceles triangle in which the inside electrode  68   a  is located at the vertex and the inside electrodes  68   b  and  68   c  form the base. The frame-shaped electrode  65  is a common electrode that is connected to the anode of each of the LED dies  71 ,  72 , and  73  and the inside electrodes  68   a,    68   b,  and  68   c  are connected to cathodes  78   a,    78   b,  and  78   c  of the LED dies  71 ,  72 , and  73 , respectively. 
         [0055]    The LED dies  71 ,  72 , and  73  are a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode, respectively. The LED dies  71 ,  72 , and  73  share an anode  75 , and include the cathodes  78   a ,  78   b,  and  78   c,  respectively. The anode  75  of the LED dies  71 ,  72 , and  73  is connected to the frame-shaped electrode  65  via a wire  69   a,  a surface electrode  64   a,  and a through hole  64   c.  The cathodes  78   a,    78   b,  and  78   c  of the LED dies  71 ,  72 , and  73  are connected to the inside electrodes  68   a,    68   b,  and  68   c.  The cathode  78   b  of the LED die  72  is connected to the inside electrode  68   b  via a wire, a surface electrode  642   b,  and a through hole  642   d.  The cathode  78   c  of the LED die  73  is connected to the inside electrode  68   c  via a wire, a surface electrode  643   b,  and a through hole  643   d.  In the LED device  60 , since the currents that flow through the LED dies  71 ,  72 , and  73 , respectively may be individually controlled, light may be emitted in a variety of colors by changing the currents that flow through the LED dies  71 ,  72 , and  73 . 
       Fourth Embodiment 
       [0056]    In the LED device  60  of the third embodiment, the inside electrodes  68   a,    68   b,  and  68   c  are arranged so as to form a triangle. However, the arrangement of the inside electrodes is not limited to the triangular arrangement in which the electrodes are arranged so as to form a triangle. With reference to  FIGS. 8A and 8B , an LED device  80  in which inside electrodes are linearly arranged is explained as a fourth embodiment.  FIG. 8A  is a bottom view of the LED device  80 . The LED device  80  has the circuit configuration illustrated in  FIG. 7  like the LED device  60  of the third embodiment. In the LED device  80 , the three LED dies  71 ,  72 , and  73  (see  FIG. 7 ), a phosphor layer  83 , and a reflection layer  82  are arranged on a submount substrate  84 . A frame-shaped electrode  85  is arranged on the periphery of the bottom of the LED device  80 , and three inside electrodes  88   a ,  88   b,  and  88   c  are linearly arranged inside the frame-shaped electrode  85 . The frame-shaped electrode  85  is a common electrode that is connected to the anodes of the LED dies  71 ,  72 , and  73 . The anodes  75  of the LED dies  71 ,  72 , and  73  are connected to the frame-shaped electrode  85  via a wire  89   a,  a surface electrode  84   a,  and a through hole  84   c.  The inside electrodes  88   a,    08   b,  and  88   c  are connected to the cathodes  78   a,    78   b,  and  78   c  of the LED dies  71 ,  72 , and  73 , respectively. The cathode  78   a  of the LED die  71  is connected to the inside electrode  88   a  via a wire, a surface electrode  841   b,  and a through hole  841   d.  The cathode  78   b  of the LED die  72  is connected to the inside electrode  88   b  via a wire, a surface electrode  842   b,  and a through hole  842   d.  The cathode  78   c  of the LED die  73  is connected to the inside electrode  88   c  via a wire, a surface electrode  843   b,  and a through hole  843   d.    
       Fifth, Sixth, and Seventh Embodiments 
       [0057]    In the LED devices  60  and  80  of the third and fourth embodiments, the frame-shaped electrodes  65  and  85  are connected to the anodes of the LED dies  71 ,  72 , and  73 . However, in the LED device of the embodiment, the frame-shaped electrode may not be connected to the anodes of the LED die  71 ,  72 , and  73 . With reference to  FIGS. 9, 10, and 11 , LED devices  90 ,  100 , and  110 , in which the frame-shaped electrode is connected to the ground wire of the mother substrate and is not connected to the electrode of the LED die, are explained as fifth, sixth, and seventh embodiments. 
         [0058]      FIGS. 9, 10, and 11  are bottom views of the LED devices  90 ,  100 , and  110 , respectively. Each of the LED devices  90 ,  100 , and  110  has the circuit configuration illustrated in  FIG. 7  like the LED device  60  of the third embodiment. In the LED devices  90 ,  100 , and  110 , the three LED dies  71 ,  72 , and  73  (see  FIG. 7 ), a phosphor layer, and a reflection layer are arranged on submount substrates  94 ,  104 , and  114 , respectively. 
         [0059]    A frame-shaped electrode  95  is arranged on the periphery of the bottom of the LED device  90 , and inside electrodes  98   a,    98   b,    98   c,  and  98   d  are arranged inside the frame-shaped electrode  95 . The frame-shaped electrode  95  is connected to the ground wire of the mother substrate, and the frame-shaped electrode  95  is not connected to the electrodes of the LED dies  71 ,  72 ,  73 . One of the inside electrodes  98   a,    98   b,    98   c,  and  98   d  is connected to the common anode  75  (see  FIG. 7 ) and the other inside electrodes are connected to the cathodes  78   a,    78   b,  and  78   c  of the LEDs  71 ,  72 , and  73 , respectively. 
         [0060]    A frame-shaped electrode  105  is arranged on the periphery of the bottom of the LED device  100 , and four inside electrodes  108   a,    108   b,    108   c,  and  108   d  are arranged inside the frame-shaped electrode  105  so that each is located at the vertex of a square. The frame-shaped electrode  105  is connected to the ground wire of the mother substrate, and the frame-shaped electrode  105  is not connected to the electrodes of the LED dies  71 ,  72 , and  73 . One of the inside electrodes  108   a,    108   b,    108   c , and  108   d  is connected to the common anode  75  (see  FIG. 7 ) and the other inside electrodes are connected to the cathodes  78   a,    78   b,  and  78   c  of the LED dies  71 ,  72 , and  73 , respectively. 
         [0061]    A frame-shaped electrode  115  is arranged on the periphery of the bottom of the LED device  110 , and an inside electrode  118   a  is arranged inside the frame-shaped electrode  115 , and three inside electrodes  118   b,    118   c , and  118   d  are linearly arranged adjacent to the inside electrode  118   a.  The frame-shaped electrode  115  is connected to the ground wire of the mother substrate, and the frame-shaped electrode  115  is not connected to the electrodes of the LED dies  71 ,  72 , and  73 . The inside electrode  118   a  is connected to the common anode  75  (see  FIG. 7 ) and the inside electrodes  118   b,    118   c,  and  118   d  are connected to the cathodes  78   a,    78   b,  and  78   c  of the LED dies  71 ,  72 , and  73 , respectively. 
       Eighth Embodiment 
       [0062]    In the LED devices  1 ,  50 ,  60 ,  80 ,  90 ,  100 , and  110  of the first to seventh embodiments, the frame-shaped electrode is formed across the entire periphery of the bottom of the LED device. When the LED device is mounted on the mother substrate, the perimeter of the bottom of the LED device may be sealed by solder along the periphery, by forming the frame-shaped electrode across the entire periphery of the bottom of the LED device. Since the perimeter of the bottom of the LED device is sealed by solder along the periphery, electrically conductive foreign matter, such as moisture, may be prevented from invading the bottom of the LED device without performing special coating processing. However, when the frame-shaped electrode is arranged across the entire periphery of the bottom of the LED device, the inside electrode that is arranged inside the frame-shaped electrode is connected to the wire outside the frame-shaped electrode via the through hole that penetrates through the mother substrate in order to cross the frame-shaped electrode. With reference to  FIGS. 12A, 12B, and 13 , an LED device  120  in which inside electrodes may be connected to the wire outside the frame-shaped electrode without using the through hole is explained as an eighth embodiment. 
         [0063]      FIG. 12A  is a perspective view of the LED device  120  and  FIG. 12B  is a bottom view of the LED device  120 . In the LED device  120 , an LED die, a phosphor layer  128 , and a reflection layer  127  are arranged on a submount substrate  121 . Since the sectional structure of the LED device  120  is substantially the same as that of the LED device  1  of the first embodiment, the section view of the LED device  120  is not provided. A frame-shaped electrode  122  that is arranged on the bottom of the LED device  120  has three sides, i.e., an upper side, a left side that extends downward from the left end of the upper side, and a right side that extends downward from the right end of the upper side, and therefore the configuration of the frame-shaped electrode  122  is formed as the frame-shaped configuration from which one side is missing. In other words, the frame-shaped electrode  122  is formed into a U shape. The frame-shaped electrode  122  includes electroplating patterns  122   a,    122   b,  and  122   c.  An inside electrode  123  is formed so as to be surrounded by the frame-shaped electrode  122 . The inside electrode  123  includes an electroplating pattern  123   a.  When the LED device  120  is manufactured, the submount substrates  121  are connected to one another, and arranged on a large-sized substrate, and the submount substrates  121  on a large-sized substrate are individualized by cutting the large-sized substrate. When a plurality of LED devices  120  is arranged on the large-sized substrate, the electroplating pattern  122   a  is connected to the electroplating pattern  122   c,  and the electroplating pattern  122   b  is connected to the electroplating pattern  123   a.    
         [0064]      FIG. 13  is a plan view illustrating a solder pattern that is formed on the mother substrate on which the LED device  120  is mounted. The solder pattern that is illustrated in  FIG. 13  has a solder pattern  124  that is connected to the frame-shaped electrode  122  (see  FIGS. 12A and 12B ) and a solder pattern  125  that is connected to the inside electrode  123 . A wire on the mother substrate that is connected to the inside electrode  123  is formed so as to be connected from the opening side of the solder pattern  124  to the solder pattern  125 . 
         [0065]    The LED device  120  may simplify the wire of the mother substrate on which the LED device  120  is mounted. Foreign matter is prevented from invading the bottom of the LED device  120 , by performing coating processing to apply a protective member only to the side on the opening side of the solder pattern  124  (see  FIG. 13 ) after mounting the LED device  120  on the mother substrate. The entire periphery of the bottom of the conventional LED device (see  FIGS. 14 and 15 ) should be coated in order to prevent foreign matter from invading the bottom of the LED device, whereas only one side of the bottom of the LED device  120  is coated. When the LED device  120  is compared with the LED device  1  of the first embodiment, in which the frame-shaped electrode  5  or the like (see  FIGS. 3A to 3C ) is arranged across the entire periphery of the bottom of the LED device, it is not necessary to form a through hole for the wire of the inside electrode in the mother substrate by using the LED device  120 . Since if the LED device  120  is used, the wire of the mother substrate is simplified, the planar size of the submount substrate  121  (see  FIGS. 12A and 12B ) may be reduced, and the size of the LED device  120  may be reduced. 
         [0066]    In the LED device  120  of the eighth embodiment, although the one inside electrode  123  is arranged, a plurality of inside electrodes may be arranged in an LED device including a frame-shaped electrode in the shape of U. If a plurality of inside electrodes is arranged in an LED device including a frame-shaped electrode in the shape of U, the LED device may have a plurality of LED dies, and the colors of light emitted from the LED dies that are mounted in the LED device may be different from one another. 
         [0067]    In the LED devices  1 ,  50 ,  60 ,  80 ,  90 ,  100 ,  110 , and  120  of the first to eighth embodiments, the reflection layer  2  is arranged on the top thereof and the phosphor layer  3  is arranged on the side thereof. However, in the LED devices of the embodiments, the structure of the element that is arranged on the surface of the submount substrate on which the LED die is arranged is not limited to that of the embodiments. For example, in the LED devices of the embodiments, the LED die may be flip-chip-mounted. Further, in the LED devices of the embodiments, the reflection layer that is arranged on the top of the LED device may be removed. Furthermore, in the LED device of the embodiments, the reflection member may be arranged on the side instead of the top. 
         [0068]    In the LED devices  1 ,  60 , and  80  of the first, third, and fifth embodiments, the frame-shaped electrodes  5 ,  65 , and  85  are connected to the anode of the LED die and each of the inside electrodes  8 ,  68   a  to  68   c,  and  88   a  to  88   c  is connected to the cathode of the LED die. In other words, in the explained embodiments, when the frame-shaped electrode is connected to the anode, the inside electrode is connected to the cathode and when the frame-shaped electrode is connected to the cathode, the inside electrode is connected to the anode. However, the frame-shaped electrode may be connected to one of the anode and the cathode, and some inside electrodes may be connected to the anode, and some others may be connected to the cathode. For example, if a LED device has electrodes on the bottom, as illustrated in  FIGS. 5A and 5B , the frame-shaped electrode  55  and the inside electrode  58   a  may be connected to the anode of the LED die  9  (see  FIG. 4 ), and the inside electrode  58   b  may be connected to the cathode of the LED die  9 . 
       REFERENCE SIGNS LIST 
       [0000]    
       
           1 ,  50 ,  60 ,  80 ,  90 ,  100 ,  110 ,  120  LED device; 
           2 ,  52 ,  62 ,  62 ,  127  reflection layer; 
           3 ,  53 ,  63 ,  83 ,  128  phosphor layer; 
           4 ,  54 ,  64 ,  84 ,  94 ,  104 ,  114 ,  121  submount substrate; 
           4   a,    4   b,    54   a,    54   b,    64   a,    642   b,    643   b,    84   a,    841   b,    842   b ,  843   b  surface electrode; 
           4   c,    4   d,    54   c,    54   d,    64   c,    642   d,    643   d,    84   c,    841   d,    842   d ,  843   d  through holes; 
           5 ,  55 ,  65 ,  85 ,  95 ,  105 ,  115 ,  122  frame-shaped electrode; 
           6 ,  6   a,    56 ,  56   a,    56   b,    66 ,  662 ,  663 ,  86 ,  861 ,  862 ,  863  solder; 
           7 ,  57 ,  67 ,  87  mother substrate; 
           7   a,    7   b,    57   a,    57   b,    57   c,    67   a,    672   b,    673   b,    87   a,    871   b ,  872   b,    873   b  wire electrode; 
           8 ,  58   a,    58   b,    68   a - c ,  88   a - c ,  98   a - d ,  108   a - d ,  118   a - d , 123  inside electrode; 
           9 ,  59 ,  71 ,  72 ,  73  LED die; 
           9   a,    59   a,    69   a,    89   a  wire; 
           75  anode; 
           78   a,    78   b,    78   c  cathode; 
           122   a,    122   b,    122 C,  123   a  electroplating pattern; and 
           124 ,  125  solder pattern