Patent Publication Number: US-2019198733-A1

Title: Light emitting device and manufacturing method thereof

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The present invention relates to a compact light emitting device that uses a light emitting element, and a manufacturing method thereof. 
     Description of the Related Art 
     Conventionally, compact and high-luminance light emitting devices that are manufactured with the reduced number of members and the low cost have been desired. A chip size package (CSP) has been known in which a light emitting element of the maximum size relative to the size of a light emitting device is used. For example, such a light emitting device has been known that a phosphor-containing layer is mounted on a top face of a light emitting element, and a resin (white color member) containing a reflection material is filled in the surrounding thereof, thereby preventing the light emitting element to emit light to a lateral side and causing the light emitting element to emit light only in an upward direction. 
     For example, Patent Literatures 1 to 3 each propose a manufacturing method of a light emitting device in which a reflective white color member is dropped in the surrounding of a light emitting element, and thereafter is cured, thereby filling the white color member. 
     Patent Literature 4 discloses a light emitting device in which a white color member is dropped in the surrounding of a light emitting element, and a plate-like phosphor-containing layer is thereafter mounted above the light emitting element and the white color member. 
     Patent Literature 5 discloses a method in  FIG. 5  in which a phosphor-containing layer is mounted on a top face of a light emitting element, and a curved metallic mold is pressed against the phosphor-containing layer, thereby filling a white color member in a space between the light emitting element and the phosphor-containing layer, and the metallic mold. This can form the white color member with a top face that is inclined in a concave shape in the surrounding of the phosphor-containing layer, and reflect light emitted from the phosphor-containing layer in the inclined direction to an upward direction, thereby allowing the efficiency of taking light in the upward direction to be improved. 
     CITATION LIST 
     Patent Literatures 
     [Patent Literature 1] JP-A-6065135 
     [Patent Literature 2] JP-A-5744643 
     [Patent Literature 3] JP-A-5746335 
     [Patent Literature 4] JP-A-5680472 
     [Patent Literature 5] JP-A-5730680 
     SUMMARY OF THE INVENTION 
     In the light emitting device that uses a light emitting element, light is desired to be effectively used with the downsized, high-luminance, and low cost optical system. However, the configurations disclosed in the abovementioned Patent Literatures 1 to 4 have such a problem that although the white color member shields lateral light emitting of the light emitting element, light is radially emitted from the top face of the phosphor-containing layer, so that the light spreads above, and the light intensity is lowered at a position separated from the light emitting device. 
     In the light emitting device as in Patent Literature 5 in which the top face of the white color member is formed in a concave shape with a metallic mold, the entire lateral face of the phosphor-containing layer is covered with the white color member, and light that is intended to be emitted from the lateral face of the phosphor-containing layer is shielded. This disables lateral light emitting of phosphor-containing layer to be used. 
     Moreover, the method specially as in Patent Literature 5 in which the top face of the white color member is formed in a concave shape with a metallic mold requires the metallic mold that corresponds to a minute light emitting element with about 1 mm squares. Forming such a compact metallic mold in a curved shape is not easy. In addition, a metallic mold is required to be produced for each size of the light emitting element, and the curvatures of a plurality of metallic molds are also required to be uniformed in order to mass-manufacture light emitting devices with high accuracy. In addition, by considering a position shift when the light emitting element is mounted, a metallic mold is required to be formed in a size that corresponds to the shift, so that forming the metallic mold is difficult. 
     An aspect of the invention is to provide a light emitting device with high upward emission efficiency. 
     Solution to Problem 
     A first aspect of the invention provides a light emitting device as follows. In other words, the light emitting device includes: a substrate; a chip-like light emitting body that is mounted on the substrate; and a reflection member that is filled in a surrounding of the light emitting body. In the light emitting device, a top face of the reflection member is an inclined surface with an edge, on a side of the light emitting body, that is in contact with a lateral face of the light emitting body, and an edge, on a side of an outer circumference, at least a part of which is located at a position higher than a height of the light emitting body, and the inclined surface has a concave-shaped curved surface that is temporarily inclined in a direction to approach the substrate as being apart from the edge on the side of the light emitting body toward the side of the outer circumference, and is thereafter inclined in a direction to be apart from the substrate. 
     Advantageous Effects of Invention 
     The invention can provide the light emitting device with high emission efficiency of light emitted from the light emitting body because a top face of the reflection member is an inclined surface with an edge, on a side of the light emitting body, that is in contact with a lateral face of the light emitting body, and an edge, on a side of an outer circumference, at least a part of which is located at a position higher than a height of the light emitting body, and the inclined surface has a concave-shaped curved surface that is temporarily inclined in a direction to approach the substrate as being apart from the edge on the side of the light emitting body toward the side of the outer circumference, and is thereafter inclined in a direction to be apart from the substrate. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  is a top view and  FIG. 1B  is a cross-sectional view of a light emitting device according to a first embodiment; 
         FIG. 2  is a cross-sectional view illustrating paths of light emitted from a light emitting element  11  in the first embodiment; 
         FIGS. 3A to 3D  are explanation views illustrating a manufacturing process of the light emitting device in the first embodiment; 
         FIG. 4A  is a top view and  FIG. 4B  is a cross-sectional view of a light emitting device according to a second embodiment; and 
         FIG. 5  is a cross-sectional view illustrating paths of light emitted from the light emitting element  11  in the second embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Hereinafter, a light emitting device according to an embodiment of the invention will be described. 
       FIGS. 1A and 1B  respectively illustrate a top view and a cross-sectional view of a light emitting device according to a first embodiment. In the present embodiment, a reflection material that has fluidity in an uncured state and reflects light is filled in the surrounding of a chip-like light emitting body that is mounted on a substrate, and is thereafter cured, thereby forming a reflection member  15 . Hereinafter, an explanation is made by regarding a side of a substrate  10  on which the light emitting body is mounted as an upper side. A top face of the reflection member  15  is an inclined surface with an edge  15   a , on a side of the light emitting body, that is in contact with a lateral face of the light emitting body, and an edge  15   b , on a side of an outer circumference, at least a part of which is located at a position higher than the height of a top face of the light emitting body. The inclined surface has a concave-shaped curved surface that is temporally inclined in a direction to approach the substrate  10  as being apart from the edge on the side of the light emitting body toward the side of the outer circumference, and is thereafter inclined in a direction to be apart from the substrate  10 . This can obtain a light emitting device with high upward emission efficiency. 
     In the present embodiment, the light emitting body includes a light emitting element  11  including an LED chip, and a phosphor-containing layer  24  disposed on a top face of the light emitting element  11 . The top face of the reflection member  15  preferably has the edge  15   a , on the side of the light emitting element  11 , that is in contact with a lateral face of the phosphor-containing layer  24 , and the edge, on the side of the outer circumference, at least a part of which is higher than the height of the phosphor-containing layer  24 . 
     A frame  16  stands at a position separated from a lateral face of the light emitting body in the surrounding of the light emitting body on the substrate  10 , and the edge  15   b  of the top face of the reflection member  15  on the side of the outer circumference is desirably in contact with the frame  16 . 
     An opening  16   a  is desirably formed in at least a part of the frame  16 . 
     The edge  15   a  of the top face of the reflection member  15  on the side of the phosphor-containing layer  24  is desirably in contact with the lateral face of the phosphor-containing layer  24  below an upper end of the phosphor-containing layer  24 . 
     Moreover, the invention provides a manufacturing method of a light emitting device as follows. In other words, the manufacturing method of a light emitting device includes: a step of disposing the phosphor-containing layer  24  on the top face of the light emitting element  11  mounted on the substrate  10 ; a step of disposing the frame  16  at a position separated from the lateral face of the phosphor-containing layer  24 , on the substrate  10 ; a step of pushing a plate-like elastic body against top faces of the phosphor-containing layer  24  and the frame  16  so as to be come into contact therewith, and filling, in a state where a lower face of the elastic body is pushed up by the phosphor-containing layer  24  and the frame  16 , a reflection material having fluidity in an uncured state in surroundings of the light emitting element  11  and the phosphor-containing layer  24  so as to be along the lower face of the elastic body; and a step of curing the reflection material, and forming the reflection member  15 . 
     The height of the frame  16  is desirably higher than the top face of the phosphor-containing layer  24 , and the thickness of the elastic body is desirably larger than a difference between the height of the frame  16  and the height of the phosphor-containing layer  24 . The lower face of the elastic body desirably has a property to repel the reflection material. By disposing a plate-like member on an elastic body, and pressing the plate-like member, the elastic body is desirably pushed against the frame  16  and the phosphor-containing layer  24 . The reflection material is desirably injected from the opening  16   a  included in the frame  16 . Moreover, the manufacturing method of a light emitting device may include a step of removing the frame  16 . 
     Hereinafter, specific embodiments will be described. 
     First Embodiment 
     The light emitting element  11  including an LED chip of a flip-chip type is mounted on the sub-mount substrate  10  (hereinafter, referred to the substrate  10 ) with a top face on which wiring and electrodes are formed, and is bonded to and is mounted on electrodes  12  by soldering or bumping. The LED chip includes a laminated structure of a plurality of semiconductor material layers including a light-emitting layer, and electrodes. 
     The phosphor-containing layer  24  is disposed on the top face of the light emitting element  11 . The phosphor-containing layer  24  is formed by materials in which phosphor particles are kneaded and dispersed to a resin or an inorganic binder. In the light emitting device in  FIG. 1 , the light emitting element  11  and the phosphor-containing layer  24  have the same size seen from the top faces, and lateral faces thereof are located at the identical position. Moreover, in the present embodiment, the plate-like phosphor-containing layer  24  with the flat top face is disposed on the top face of the light emitting element  11 . 
     The surrounding of the light emitting element  11  is filled with the reflection member  15 . The top face of the reflection member  15  is a curved inclined surface having a concave shape. More specifically, as illustrated in  FIG. 2 , the top face of the reflection member  15  is an inclined surface with the edge  15   a , on the side of the light emitting element  11 , that is in contact with the lateral face of the phosphor-containing layer  24 , and the edge  15   b , on the side of the outer circumference, at least a part of which is located at a position higher than the height of the phosphor-containing layer  24 . The inclined surface of the reflection member  15  is a curved surface that is temporally inclined (region a 1 ) in a direction to approach the substrate  10  as being apart from the edge on the side of the phosphor-containing layer  24  toward the side of the outer circumference, approaches closest to the substrate  10  in a lowermost part  15   c , and is inclined (region a 2 ) in a direction to be further apart from the substrate  10  on the side of the outer circumference. 
     The light emitting device with such a configuration allows the light emitting device with high emission efficiency of light that is emitted upward from the light emitting element  11  to be provided. It should be noted that optical paths of light that is emitted from the light emitting element  11  will be described later in details. 
     The lowermost part  15   c  is preferably positioned above an upper end of the light emitting element  11 . In other words, a distance between the substrate  10  and the lowermost part  15   c  is preferably longer than a distance between the substrate  10  and the upper end of the light emitting element  11 . 
     The frame  16  is disposed in an outside of the light emitting element  11 . A space between the light emitting element  11  and the frame  16  is filled with the reflection member  15 . The reflection member  15  is formed in such a manner that a reflection material  15 A in an uncured state obtained by mixing particles having a light scattering property into a resin or a binder of inorganic materials is injected into a space between the light emitting element  11  and the frame  16 , and cured. 
     The edge  15   b  is in contact with a portion of the frame  16  slightly below an upper end of the frame  16 , but may be in contact with the upper end of the frame  16 . Moreover, the edge  15   a  is in contact with the phosphor-containing layer  24  between the upper end and a lower end of the phosphor-containing layer  24 . 
     The frame  16  stands from the substrate  10  so as to be higher than a height of the phosphor-containing layer  24  from the substrate  10  in order that at least a part of the edge  15   b  of the reflection member  15  on the side of the outer circumference is higher than the height of the phosphor-containing layer  24 . In this example, the frame  16  stands along an outer circumferential edge of the substrate  10 , and includes the opening  16   a  in a part of the frame  16 . The arrangement of the frame  16  and the opening  16   a  is not limited to this example, but a plurality of separated frames  16  may be employed, for example. The opening  16   a  is formed so as to fill the reflection member  15 , and thus may be formed in at least a part of the frame  16 . 
     As the substrate  10 , for example, a resin substrate may be used. As another example, a substrate made of AlN ceramic on which an Au wiring pattern or the like is formed may be used. As a bump, for example, an Au bump is used. The light emitting element  11  that emits light of a desired wavelength is prepared. For example, the light emitting element  11  that emits blue light is used. 
     As the phosphor of the phosphor-containing layer  24 , a phosphor that emits fluorescence having a desired wavelength using light from the light emitting element  11  as excitation light is used. Specifically, for example, a phosphor (for example, YAG phosphor) that is excited by light emission of the light emitting element  11  that emits blue light, and emits yellow fluorescence is used. This can provide a light emitting device that emits white light in which the blue light and the yellow light are mixed. As the frame  16 , a ceramic ring is used, for example. 
     As a binder of the reflection member  15 , a thermal curable resin such as a silicone resin, an epoxy resin, or a fluorine resin, or a thermoplastic resin such as a plastic or nylon based resin can be used. As scatter materials (particles), a metal oxide such as a titanium oxide, a zinc oxide, or alumina can be used. 
     The higher concentration of the scatter particles of the reflection member  15  results in the higher reflection rate, which can desirably reduce evanescent light, however, the fluidity is lowered when the concentration becomes too high. Accordingly, the maximum concentration of the scatter particles that can maintain the fluidity for filling the reflection member  15  in the surrounding of the light emitting element  11  is desirably set. 
     Subsequently, with reference to  FIG. 2 , paths of light emitted from the light emitting element  11  will be described. 
     The entire lateral face of the light emitting element  11  is covered with the reflection member  15 , light that is intended to be emitted from the lateral face of the light emitting element  11  is shielded. Light that is emitted upward from the light emitting element  11  enters the phosphor-containing layer  24  that is positioned upward. 
     Part of the light (for example, blue light) that is emitted from the light emitting element  11  and enters the phosphor-containing layer  24  is absorbed by a phosphor included in the phosphor-containing layer  24 , and is converted into fluorescence (for example, yellow light). The light (blue light) that is not absorbed by the phosphor and the fluorescence (yellow light) are mixed to become mixed light (white light). The mixed light is emitted from the phosphor-containing layer  24 . 
     Light L 1  to be emitted from the top face of the phosphor-containing layer  24  is emitted upward without any change. In contrast, light L 2  to be emitted from the lateral face of the phosphor-containing layer  24  in an inclined direction is reflected on the top face of the reflection member  15 , and travels upward. 
     Moreover, light L 3  to be emitted from a portion of the lateral face of the phosphor-containing layer  24  that is covered with the reflection member  15  enters the reflection member  15 . The light L 3  that passes through the reflection member  15  has a short path as illustrated by an arrow a 3  because of the region a 1  where the inclined surface of the reflection member  15  is inclined toward the side of the substrate  10  in the present application. Accordingly, the greater part of the light L 3  can pass through the reflection member  15 , and is reflected on the top face of the reflection member  15 , and travels upward. 
     In this manner, the light emitting device can concentrate light above by causing not only the light L 1  emitted upward from the phosphor-containing layer  24  but also the light L 2  emitted from the lateral face of the phosphor-containing layer  24  to reflect on the top face of the reflection member  15 . Accordingly, the light emitting device can improve the light intensity of light to be emitted upward. 
     In addition, as indicated by the light L 3 , the light emitting device can cause the light that is emitted from the portion of the phosphor-containing layer  24  covered with the reflection member  15  to pass through the reflection member  15  that covers the phosphor-containing layer  24 , and emit upward. Accordingly, the light emitting device can prevent lateral light emitting of the phosphor-containing layer  24  from being entirely shielded by the reflection member  15 , and thereby can improve the usage efficiency of light that is emitted from the light emitting element  11 . 
     Next, a manufacturing method of the light emitting device according to the present embodiment will be described using  FIGS. 3A to 3D . Firstly, as in  FIG. 3A , an upper mold  41  serving as one example of a plate-like member, a mold releasing film  42  serving as one example of an elastic body that is stuck on the upper mold  41 , and a lower mold  43  are prepared. 
     In this example, metallic molds with 0.42 mm squares are respectively used as the upper mold  41  and the lower mold  43 . Moreover, a film having prescribed shape-following-up properties and mold release properties can be used as the mold releasing film  42 . In this example, as the mold releasing film  42 , Fluon® ETFE Film (trade name) (registered trademark) including fluorine resin, manufactured by ASAHI GLASS CO., LTD is used. The thickness of the mold releasing film  42  is preferably more than a difference between the height of the edge  15   a  of the top face of the reflection member  15  on the side of the phosphor-containing layer  24  and the height of the edge  15   b  thereof on the side of the outer circumference, and was set to 0.1 mm in this example. It should be noted that the modulus of elasticity of the mold releasing film  42  is 1000 MPa at the temperature of 25 degrees in this example. The scratching test in conformity with JISK5600-5-4 revealed that the hardness of the hardest pencil with which no scratch occurred was 5B. 
     The substrate  10  is disposed on the lower mold  43  such that a surface on which the light emitting element  11  and the like are disposed is on top. The substrate  10  with 0.43 mm squares was used in this example. Element electrodes of a flip-chip type and with 1 mm squares of the light emitting element  11  are bonded to and mounted on the electrodes  12  on the top face of the substrate  10  by soldering or bumping. The frame  16  is disposed and fixed to a position that is separated from the lateral face of the phosphor-containing layer  24 , on the substrate  10 . Next, the sheet-like phosphor-containing layer  24  with a thickness of 50 to 100 μm and 1 mm squares obtained by being phosphor particles kneaded with a binder and cured is prepared, and is mounted on the top face of the light emitting element  11 . It should be noted that the phosphor-containing layer  24  may be formed in such a manner that the top face of the light emitting element  11  is coated with phosphor particles so as to have a prescribed thickness by printing or potting, and the phosphor particles are then cured under a prescribed condition. 
     Next, as in  FIG. 3B , the upper mold  41  is moved to the side of the substrate  10 , and the mold releasing film  42  is pushed against the top face of the phosphor-containing layer  24  and the top face of the frame  16  so as to be come into contact therewith, by the upper mold  41 . This causes the center part of the mold releasing film  42  to be sandwiched between the upper mold  41  and the top face of the phosphor-containing layer  24 , so that a lower face of the mold releasing film  42  is pushed up by the top face of the phosphor-containing layer  24 . The mold releasing film  42  in the surrounding of the phosphor-containing layer  24  becomes a downward convex shape due to the elasticity thereof. Accordingly, the mold releasing film  42  comes into contact with not only the top face of the phosphor-containing layer  24  but also an upper portion of the lateral face of the phosphor-containing layer  24  to cover contacts  42   a  of the lateral face of the phosphor-containing layer  24 . In other words, the upper portion of the phosphor-containing layer  24  is buried in the mold releasing film  42 . This prevents the reflection member  15  from reaching above the contacts  42   a , and a portion of the lateral face of the phosphor-containing layer  24  above the contacts  42   a  from being covered with the reflection member  15 . 
     Moreover, the mold releasing film  42  is pushed against the top face of the frame  16  so as to come into contact therewith to sandwich end portions of the mold releasing film  42  between the upper mold  41  and the top face of the frame  16 , so that the lower face of the mold releasing film  42  is pushed up by the top face of the frame  16 . Accordingly, the mold releasing film  42  in the surrounding of the frame  16  becomes a downward convex shape due to the elasticity thereof, so that the mold releasing film  42  comes into contact with not only the top face of the frame  16  but also an upper portion of the lateral face of the frame  16  to cover contacts  42   b  of the lateral face of the frame  16 . The frame  16  has a height higher than that of the phosphor-containing layer  24 , so that end portions of the lower face of the mold releasing film  42  have a height higher than that of the center part of the lower face of the mold releasing film  42 . 
     The lower face of the mold releasing film  42  from the contact  42   a  in contact with the lateral face of the phosphor-containing layer  24  to the contact  42   b  in contact with the lateral face of the frame  16  becomes a curved inclined surface in which the contact  42   b  has a height higher than that of the height of the phosphor-containing layer  24 . More specifically, the inclined surface of the mold releasing film  42  becomes a curved surface that is temporarily inclined in a direction to approach the substrate  10  as being apart from the contact  42   a  toward the contact  42   b , approaches closest to the substrate  10  in a lowermost part  42   c , and is inclined in a direction to be further apart from the substrate  10 . In this example, the distance from the contact  42   a  to the lowermost part  42   c  was about 0.03 mm. 
     Next, the reflection material  15 A obtained by kneading scatter particles with a binder and having fluidity in an uncured state is prepared. After the reflection material  15 A is filled in a space between the phosphor-containing layer  24  and the frame  16  from the opening  16   a  of the frame  16  illustrated in  FIG. 1A  until the reflection material  15 A is in contact with the mold releasing film  42  as in  FIG. 3C , the uncured reflection material  15 A is primarily cured under the prescribed condition such as heating. This causes the reflection material  15 A to be cured to the extent that the shape thereof is maintained. 
     The top face of the reflection material  15 A becomes an inclined surface along the curved surface included in the lower face of the mold releasing film  42 . In other words, the top face of the reflection material  15 A becomes an inclined surface with the edge  15   a , on the side of the light emitting element  11 , that is in contact with the lateral face of the phosphor-containing layer  24 , and the edge  15   b , on the side of the outer circumference, at least a part of which is located at a position higher than the height of the phosphor-containing layer  24 . The inclined surface of the reflection material  15 A is a curved surface that is temporally inclined in a direction to approach the substrate  10  as being apart from the edge on the side of the phosphor-containing layer  24  toward the side of the outer circumference, approaches closest to the substrate  10  in the lowermost part  15   c , and is inclined in a direction to be apart from the substrate  10 . The edge  15   a , the edge  15   b  and the lowermost part  15   c  in  FIG. 3C  respectively are in contact with the contact  42   a , the contact  42   b , and the lowermost part  42   c  in  FIG. 3B . 
     Next, as in  FIG. 3D , the substrate  10  is taken out from between the upper mold  41  and the lower mold  43 . The mold releasing film  42  having mold release properties can repel the reflection material  15 A and separate from the reflection material  15 A in a state where the reflection material  15 A is not entirely cured, while maintaining the shape of the reflection material  15 A. The reflection material  15 A is then secondarily cured under the prescribed condition such as heating to form the reflection member  15  while maintaining the shape of the reflection material  15 A described above. As in the foregoing, the light emitting device according to the present embodiment is manufactured. 
     As described the above, manufacturing the compact light emitting device using the mold releasing film  42  eliminates the necessity of producing a metallic mold for each size of the light emitting element  11 . This eliminates the necessity of preparing a metallic mold in advance, and can reduce the cost. In addition to this, the difficulty for processing the compact metallic mold is resolved. 
     Adjusting the thicknesses of the light emitting element  11  and the phosphor-containing layer  24 , the height of the frame  16 , the thickness of the mold releasing film  42 , the elastic force of the mold releasing film  42 , and the like can easily change the heights of the edges  15   a  and  15   b  and the lowermost part  15   c , and the curvature radius of the curved surface included in the top face of the reflection member  15 . 
     The edge  15   b  becomes higher than the edge  15   a  in the reflection member  15 , so that the curvature radius of the curved surface formed by the top face of the reflection member  15  is smaller than the curvature radius of a concave-shaped meniscus when the uncured reflection material  15 A is dropped between the light emitting element  11  and the frame  16 . 
     Moreover, the reflection material  15 A is filled in a state where the mold releasing film  42  is pushed against the top face of the phosphor-containing layer  24  and the top face of the frame  16 , so that the reflection material  15 A does not spread over the top face of the phosphor-containing layer  24  and the top face of the frame  16 . Accordingly, the amount of filling of the reflection material  15 A is not required to be controlled so as to prevent the reflection material  15 A from spreading over the top face of the phosphor-containing layer  24 . 
     In addition, the reflection member  15  is filled as the uncured reflection material  15 A, and thus can be formed to be close to the light emitting element  11 , so that the light emitting device having a small light emitting area can be provided. 
     Second Embodiment 
     Alight emitting device according to a second embodiment will be described using  FIGS. 4A and 4B . This light emitting device is different from that in the first embodiment in that no frame  16  in the first embodiment is provided. Moreover, the edge  15   a  of the top face of the reflection member  15  on the side of the phosphor-containing layer  24  is in contact with an upper end of the lateral face of the phosphor-containing layer  24 . The other configurations are similar to those of the light emitting device in the first embodiment, and the light emitting element  11  is bonded to and mounted on the electrodes  12  on the substrate  10  by soldering or bumping, on the substrate  10 . The phosphor-containing layer  24  is disposed on the top face of the light emitting element  11 . The surroundings of the light emitting element  11  and the phosphor-containing layer  24  are filled with the reflection member  15 . 
     It should be noted that the light emitting device according to the present embodiment can be manufactured by the manufacturing method having been described in the first embodiment in such a manner that after the reflection member  15  is primarily cured or secondarily cured, the frame  16  is removed with the substrate  10  by being cut by dicing, for example. 
     Moreover, in order to bring the edge  15   a  of the reflection member  15  into contact with the upper end of the lateral face of the phosphor-containing layer  24 , the mold releasing film  42  having the elastic force larger than that used in the first embodiment may be used, or a method of weakening the force of the mold releasing film  42  to push the top face of the phosphor-containing layer  24  and the top face of the frame  16  may be employed. As for the other processes in the manufacturing method, the same processes in the manufacturing method of a light emitting device in the first embodiment may be used. 
     Subsequently, with reference to  FIG. 5 , paths of light emitted from the light emitting element  11  in the second embodiment will be described. 
     The entire lateral face of the light emitting element  11  is covered with the reflection member  15 , thereby light to be emitted from the lateral face of the light emitting element  11  is shielded. Light to be emitted upward from the light emitting element  11  enters the phosphor-containing layer  24 . Light L 4  to be emitted from the top face of the phosphor-containing layer  24  is emitted upward without any change. 
     Light L 5  to be emitted from the lateral face of the phosphor-containing layer  24  passes through the reflection member  15 , is reflected on the top face of the reflection member  15 , and travels upward, similar to the light L 3  in the first embodiment. 
     In this manner, the light emitting device in the second embodiment not only can cause the light L 4  to emit upward from the top face of the phosphor-containing layer  24 , but also can cause the light L 5  emitted from the lateral face of the phosphor-containing layer  24  to reflect on the top face of the reflection member  15  and thereby to emit upward. Accordingly, it is possible to improve the light intensity. Therefore, it is possible to improve the usage efficiency of light that is emitted from the light emitting element  11 . 
     The phosphor-containing layer  24  to be mounted on the light emitting element  11  may have a size larger than that of the top face of the light emitting element  11 . The sizes of the substrate  10 , the light emitting element  11 , and the phosphor-containing layer  24 , the thickness of the mold releasing film  42 , and the like are not limited to those in the examples described above, but various sizes can be employed. 
     It should be noted that a transparent material layer that is transparent with respect to the light emitted by the light emitting element  11  and the fluorescence emitted by the phosphor-containing layer  24  may be mounted on the phosphor-containing layer  24 , and a plate-like transparent member may be mounted on the transparent material layer. In addition to this, a plate member and other members in accordance with a desired configuration may be mounted. 
     The explanation has been made that the light emitting device in the abovementioned embodiments performs wavelength conversion of part of light emitted by the light emitting element  11  by the phosphor-containing layer  24 , and releases light in which light emission by the light emitting element  11  and light emission by the phosphor are mixed. However, the light emitting device may be provided with no phosphor-containing layer  24  when the wavelength conversion by the phosphor is not performed. Moreover, a configuration in which a transparent protective layer that includes no phosphor and is transparent with respect to light emitted by the light emitting element  11  is formed, instead of the phosphor-containing layer  24 , may be employed. 
     When the configuration in which no phosphor-containing layer  24  is provided is employed, the light emitting element  11  serves as a light emitting body. When the configuration in which no phosphor-containing layer  24  is provided is employed, the top face of the reflection member  15  becomes an inclined surface with the edge  15   a , on the side of the light emitting element, that is in contact with the lateral face of the light emitting element  11 , and the edge  15   b , on the side of the outer circumference, at least a part of which is located at a position higher than the height of the top face of the light emitting element  11 . The inclined surface has a concave-shaped curved surface that is temporally inclined in a direction to approach the substrate  10  as being apart from the edge  15   a  on the side of the light emitting element  11  toward the side of the outer circumference, and is thereafter inclined in a direction to be apart from the substrate  10 . A part of the upper lateral face of the light emitting element  11  is exposed from the reflection member  15 . It should be noted that the edge  15   a  of the reflection member  15  is preferably positioned above a light-emitting layer in the light emitting element  11 . 
     Such a configuration allows a light emitting device with high upward emission efficiency of light emitted from the light-emitting layer in the light emitting element  11  to be obtained. 
     A manufacturing method of a light emitting device having the configuration in which no phosphor-containing layer  24  is provided may merely omit the process of disposing the phosphor-containing layer  24  after the light emitting element  11  is mounted on the substrate  10 , and fill, in a state where the mold releasing film  42  is pushed against the top face of the light emitting element  11  and the top face of the frame  16  so as to be come into contact therewith, the reflection material  15 A having fluidity in an uncured state in the surrounding of the light emitting element  11  so as to be along the lower face of the mold releasing film  42 , in the manufacturing method of a light emitting device in the first embodiment. 
     When a configuration in which a transparent protective layer that includes no phosphor and is transparent with respect to light emitted by the light emitting element  11  is disposed, instead of the phosphor-containing layer  24 , is employed, the light emitting body includes the light emitting element  11  and the transparent protective layer. When a configuration in which a transparent protective layer that includes no phosphor and is transparent with respect to light emitted by the light emitting element  11  is disposed, instead of the phosphor-containing layer  24 , is employed, the top face of the reflection member  15  becomes an inclined surface with the edge  15   a , on the side of the light emitting element, that is in contact with the lateral face of the transparent protective layer, and the edge  15   b , on the side of the outer circumference, at least a part of which is located at a position higher than the height of the top face of the transparent protective layer. The inclined surface has a concave-shaped curved surface that is temporally inclined in a direction to approach the substrate  10  as being apart from the edge  15   a  on the side of the light emitting element  11  toward the side of the outer circumference, and is thereafter inclined in a direction to be apart from the substrate  10 . A part of the upper lateral face of the transparent protective layer is exposed from the reflection member  15 . 
     Such a configuration allows a light emitting device with high upward emission efficiency of light emitted from the light emitting element  11  to be obtained. 
     A manufacturing method of a light emitting device having the configuration in which a transparent protective layer that includes no phosphor and is transparent with respect to light emitted by the light emitting element  11  is disposed, instead of the phosphor-containing layer  24 , is preferably as follows: after the light emitting element  11  is mounted on the substrate  10 , a transparent protective layer is disposed on the top face of the light emitting element  11 ; and in a state where the mold releasing film  42  is pushed against the top face of the transparent protective layer and the top face of the frame  16  so as to come into contact therewith, the reflection material  15 A having fluidity in an uncured state is filled in the surroundings of the light emitting element  11  and the transparent protective layer so as to be along the lower face of the mold releasing film  42 . 
     REFERENCE SIGNS LIST 
       10  . . . sub-mountsubstrate (substrate),  11  . . . light emitting element,  12  . . . electrode,  15  . . . reflection member,  16  . . . frame,  24  . . . phosphor-containing layer