Light source and light-emitting module

Abstract

To provide a light source and a light emitting module that has a good appearance and in which the outer periphery of the light source is difficult to see when the light source is viewed from the light emitting surface side.SOLUTION: A light source includes a plurality of light emitting elements, a covering member that exposes upper surfaces of the plurality of light emitting elements, is arranged between the plurality of light emitting elements and on the entire outer periphery of the plurality of light emitting elements, and holds the plurality of light emitting elements together, and a plurality of translucent members, the plurality of translucent members include a plurality of first translucent members respectively arranged on the plurality of light emitting elements, and at least one second translucent member that is arranged on the covering member located on the periphery and has a thickness smaller than that of the first translucent member.SELECTED DRAWING: Figure 1A

Description

Technical Field

[0001] The present disclosure relates to a light source and a light emitting module.

Background Art

[0002] In recent years, light sources in which a plurality of light emitting elements are two-dimensionally arranged have been used in various fields such as display devices, lighting devices, and flashes. In such a light source, a white reflecting member is disposed on the outer periphery of the plurality of light emitting elements, and a member containing a phosphor is disposed on the plurality of light emitting elements. (For example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present disclosure is to provide a good-looking light source and a light emitting module in which an outer peripheral portion of the light source is hardly visible when the light source is viewed from the light emitting surface side.

Means for Solving the Problems

[0005] The light source of the present disclosure includes a plurality of light emitting elements, a covering member that exposes upper surfaces of the plurality of light emitting elements, is disposed between the plurality of light emitting elements and on an outer periphery of the entire plurality of light emitting elements, and collectively holds the plurality of light emitting elements, and a plurality of light transmissive members. The plurality of light transmissive members include a plurality of first light transmissive members respectively disposed on the plurality of light emitting elements, and at least one second light transmissive member disposed on the covering member located on the outer periphery and having a thickness smaller than that of the first light transmissive member.

Advantages of the Invention

[0006] According to the embodiments of the present disclosure, when the light source is viewed from the light emitting surface side, the outer peripheral portion of the light source is difficult to be visually recognized, and a good-looking light source and a light emitting module can be provided.

Brief Description of the Drawings

[0007]

Figure 1A

Figure 1B

Figure 1C

Figure 1D

Figure 1E

Figure 1F

Figure 2

Figure 3A

Figure 3B

Figure 3C

Figure 3D

Figure 4

Figure 5

Figure 6A

Figure 6B

Figure 6C

Figure 6D

Figure 6E

Figure 6F

Figure 6G

Figure 6H

Figure 6I

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Figure 6K

Figure 7

Embodiments for Carrying Out the Invention

[0008] Hereinafter, embodiments for carrying out the present disclosure will be described with reference to the drawings. However, the embodiments shown below are examples for embodying the technical idea of the present invention and do not limit the present invention thereto. The sizes and positional relationships of the members shown in each drawing may be exaggerated for clarity of explanation. As a cross-sectional view, an end view showing only the cut surface may be used. For the same names and reference numerals, the same or similar members are generally shown, and duplicate explanations will be omitted as appropriate. In this specification, terms such as "coating" and "covering" include cases of directly and indirectly coating (e.g., via other members). The light-emitting surface or light extraction surface refers to the surface on the light-emitting surface side of the light-emitting element, that is, the upper surface of the light source. "Substantially parallel" and "substantially perpendicular" mean allowing an inclination of about ±5 degrees.

[0009] 〔Light source〕 As shown in FIGS. 1A and 1B, the light source 10 of one embodiment includes a plurality of light-emitting elements 1, a covering member 2 that collectively holds the plurality of light-emitting elements 1, and a plurality of light-transmissive members 3. Here, the covering member 2 exposes the upper surfaces of the plurality of light-emitting elements 1 and collectively holds the plurality of light-emitting elements 1 by being disposed between the plurality of light-emitting elements 1 and on the entire outer periphery of the plurality of light-emitting elements. The plurality of light-transmissive members 3 include a plurality of first light-transmissive members 31 respectively disposed on the plurality of light-emitting elements 1 and a second light-transmissive member 32 disposed on the covering member 2 located on the entire outer periphery of the plurality of light-emitting elements 1. At least one second light-transmissive member 32 is disposed outside the first light-transmissive members 31 on the upper surface of the light source 10. The thickness of the second light-transmissive member 32 is smaller than that of the first light-transmissive member 31. With such an arrangement of each member, when the light source is not lit and viewed from the light-emitting surface side, the covering member on the outer periphery of the light source is less visible, and the appearance color of the upper surface of the light source can be made substantially the same. Further, by making the thickness of the second light-transmissive member 32 smaller than that of the first light-transmissive member 31, it is possible to reduce the transmission of external light from the upper surface to the side surface of the second light-transmissive member 32 when the light source is not lit. Thereby, the appearance colors of the first light-transmissive member 31 and the second light-transmissive member 32 when not lit can be made closer. As a result, when viewed from the light extraction surface, regardless of the presence or absence of the light-emitting element directly below the light-transmissive member, a substantially uniform appearance color can be obtained over the entire light extraction surface of the light source. Thereby, the outer peripheral portion of the light source becomes less visible, and the appearance through the lens can be improved. In the present disclosure, the entire outer periphery of the plurality of light-emitting elements 1 means, as shown in FIG. 2, in a plan view (that is, when viewed from the light extraction surface side), among the plurality of light-emitting elements arranged in a matrix, the portion surrounding the contour (broken line Q) connecting the outer side surfaces 1s of the outermost light-emitting elements 1g. In other words, in a plan view, it means the portion outside the contour (broken line Q) surrounding all of the plurality of light-emitting elements 1 and up to the end portion of the coating member 2 described later. Note that FIG. 2 is a schematic top view for explaining the arrangement of the light-emitting elements in the light source 10, and the light-transmissive member 3 is omitted in FIG. 2.

[0010] (Light-emitting element 1) The plurality of light-emitting elements 1 are arranged two-dimensionally. The plurality of light-emitting elements 1 may be arranged randomly, but are preferably arranged regularly, and more preferably arranged in a matrix. For example, it is preferable that they are regularly arranged two-dimensionally along two directions. The arrangement pitch in each direction may be different. For example, the plurality of light-emitting elements 1 may be arranged such that the interval becomes wider from the center toward the outer periphery. Among them, as shown in FIG. 1A, the plurality of light-emitting elements 1 are preferably arranged regularly and at equal intervals along the x direction and the y direction perpendicular to each other. In FIG. 1A, for example, 5×6 light-emitting elements are arranged, but they can be arranged in various numbers such as 5×5, 7×7, 7×9, etc. The arrangement pitch of the light-emitting elements can be appropriately set according to the size of the light-emitting elements, the size of the first light-transmissive member, etc. For example, when the length in the x direction such as the side length or diameter of the light-emitting element is 100 μm or more and 1000 μm or less, the pitch Px in the x direction is 110 μm or more and 2000 μm or less. Similarly, the pitch Py in the y direction is 110 μm or more and 2000 μm or less. The distances Dx and Dy may be different or the same. The plurality of light-emitting elements 1 can be lit independently, individually or for each of a plurality of groups.

[0011] The light-emitting element 1 is a semiconductor light-emitting element, and known light-emitting elements such as semiconductor lasers and light-emitting diodes can be used. For example, the light-emitting element 1 is a light-emitting diode. The wavelength of the light emitted from the light-emitting element 1 can be any selected wavelength. For example, as a light-emitting element that emits light with a wavelength in the blue to green range, elements using ZnSe, nitride semiconductors (In x Al y Ga 1-x-y N, 0 ≦ x, 0 ≦ y, x + y < 1), and GaP can be used. Also, as a light-emitting element that emits light with a red wavelength, a semiconductor light-emitting element containing a semiconductor such as GaAlAs or AlInGaP can be used. Furthermore, semiconductor light-emitting elements formed from materials other than these can also be used as the light-emitting element 1. The composition of the semiconductor used, the emission color, size, and number of the light-emitting elements, etc. can be appropriately selected according to the purpose and design specifications. The plurality of light-emitting elements may all be light-emitting elements that emit light with the same wavelength, or some or all of them may be light-emitting elements that emit light with different wavelengths.

[0012] The light-emitting element 1 has, for example, a semiconductor laminate. The semiconductor laminate includes an active layer, an n-type semiconductor layer and a p-type semiconductor layer sandwiching the active layer. The emission wavelength can be variously selected according to the material of the semiconductor and / or its degree of mixed crystal. The light-emitting element 1 may have a translucent support substrate that supports the semiconductor laminate. For the light-emitting element 1, a negative electrode 1n and a positive electrode 1p are electrically connected to the n-type semiconductor layer and the p-type semiconductor layer, respectively. The light-emitting element 1 has an upper surface 1a that is the main light-emitting surface and a lower surface 1b located on the side opposite to the upper surface 1a. When the semiconductor laminate has a support substrate, the support substrate may constitute the upper surface 1a of the light-emitting element 1. Also, it has a side surface between the upper surface and the lower surface, that is, adjacent to both the upper surface and the lower surface. The light-emitting element 1 may have positive and negative electrodes on the same side, or may have positive and negative electrodes on different surfaces. Among these, it is preferable that the light-emitting element 1 has the positive electrode 1p and the negative electrode 1n on the lower surface 1b. With such an electrode arrangement, the light-emitting element can be flip-chip mounted on the mounting substrate. The light-emitting element may have a polygonal planar shape such as a triangle, a quadrilateral, or a hexagon, or may have a circular or elliptical shape, etc., but is preferably rectangular. The size of the light-emitting element can be appropriately set according to desired performance, etc. For example, the shape of the upper surface 1a is a rectangle of 100 μm or more and 1000 μm or less × 100 μm or more and 1000 μm or less, and a rectangle of 150 μm or more and 500 μm or less × 150 μm or more and 500 μm or less is preferable. Thereby, a light source including a plurality of light-emitting elements can be made smaller. For example, it is preferable that each of the plurality of light-emitting elements 1 is rectangular in plan view and is arranged in a rectangular shape as a whole. The plurality of light-emitting elements 1 may have different sizes, shapes, etc. for a part or all of them in plan view. The thicknesses of the plurality of light-emitting elements 1 (that is, the total thickness of the semiconductor laminate and the positive and negative electrodes: H in FIG. 1B) may be different, but are preferably the same.

[0013] (Covering member 2) The covering member 2 has a function of protecting the plurality of light-emitting elements 1. Further, the covering member 2 preferably has a function of reflecting the light emitted from the side surfaces of the light-emitting element 1 and guiding it above the light-emitting element 1, that is, to the light-emitting surface side of the light source. Thereby, the utilization efficiency of the light emitted from the light-emitting element 1 can be improved. The covering member 2 exposes the upper surfaces of the plurality of light-emitting elements 1 and is disposed between the plurality of light-emitting elements 1 and on the entire outer periphery of the plurality of light-emitting elements 1. In other words, the light-emitting surface of the light-emitting element 1 is exposed. The covering member 2 further preferably exposes a part of the positive electrode 1p and the negative electrode 1n of the light-emitting element 1 and covers the lower surface 1b of the light-emitting element 1. Thereby, the light emitted from the light-emitting element can be efficiently taken out from the light-emitting surface. That is, the covering member 2 can constitute a part of the lower surface of the light source. When the light-emitting element 1 is mounted on the mounting substrate, particularly when it is flip-chip mounted, the covering member 2 may be disposed so as to fill the gap between the light-emitting element 1 and the mounting substrate, that is, between the lower surface 1b other than a part of the positive and negative electrodes of the light-emitting element 1 and the upper surface of the mounting substrate.

[0014] As described above, it is preferable that the covering member 2 is arranged with a predetermined width (Wx, Wy in FIG. 2) in the x-direction or the y-direction from the side surface 1s of the light-emitting element 1 on the entire outer periphery of the plurality of light-emitting elements 1. The predetermined widths Wx and Wy here are preferably, for example, equal to or greater than the distances Dx and Dy between the plurality of light-emitting elements. Thereby, the light emitted from the light-emitting elements located outside the entire plurality of light-emitting elements can be distributed upward, and the leakage light from the side surface of the light source can be suppressed. The widths Wx and Wy can both be, for example, in the range of 5% or more and 200% or less of the width of the light-emitting element in the same direction.

[0015] The covering member 2 is a member having light reflectivity and / or light absorptivity. Among them, it is preferably a member having high light reflectivity. Thereby, the light emitted from the side surface of the light-emitting element 1 can be reflected and extracted from the upper surface, and a light source with more excellent light extraction efficiency can be obtained. Specifically, the covering member 2 preferably has a reflectivity of 60% or more with respect to the light emitted from the light-emitting element, and more preferably has a reflectivity of 80% or more. The covering member 2 includes a base resin and particles of a light-reflective substance contained in the resin. Examples of the resin include resins containing one or more of silicone resin, modified silicone resin, epoxy resin, modified epoxy resin, acrylic resin, and fluororesin. Examples of the light-reflective substance include titanium oxide, aluminum oxide, silicon oxide, zinc oxide, boron nitride, aluminum nitride, and glass filler. The average particle diameter of the light-reflective substance is, for example, 0.05 μm or more and 30 μm or less. The covering member 2 may further contain a light absorber such as a pigment, carbon black, titanium black, graphite, or a phosphor. In the covering member 2 having light reflectivity and / or light absorptivity, it is preferable that the light-reflective substance and / or light-absorptive particles are dispersed and arranged in the resin.

[0016] As shown in FIG. 1D, the covering member 2 constitutes a part of the lower surface of the light source, and on the lower surface, it may have a groove 2A on the entire outer periphery of the plurality of light-emitting elements. Further, the covering member 2 may have a groove 2B between the light-emitting elements on the lower surface of the light source. As shown in FIG. 1E, the covering member 2 may have grooves 2A and 2B on the entire outer periphery of the plurality of light-emitting elements 1 and between the light-emitting elements on the lower surface of the light source. In this case, all or part of the grooves may be continuous when viewed from the lower surface side. Further, as shown in FIG. 1F, a light-shielding member 2C may be disposed in the grooves 2A and 2B. The light-shielding member 2C here is preferably one having higher light absorption or higher light reflectivity than the covering member 2 with respect to the light of the light-emitting element. By arranging these grooves 2A, 2B and / or the light-shielding member 2C, lateral light leakage during lighting of the light-emitting element can be reduced.

[0017] The grooves 2A and 2B can have a depth equal to or smaller than the thickness (H in FIG. 1B) of the light-emitting element 1 so as to face a part or all of the side surface of the light-emitting element 1 in the covering member 2. Among them, the depth of the grooves 2A and 2B is preferably about the same as the thickness of the light-emitting element 1. Thereby, lateral light leakage from the light-emitting element 1 can be further reduced. Further, the width of the grooves 2A and 2B can be appropriately set according to the size of the light source to be obtained, the size of the light-emitting element 1 used, etc. Among them, the width can be made equal to or smaller than the distance dx between the first light-transmitting members 31 adjacent in the x direction and the distance dy between the first light-transmitting members 31 adjacent in the y direction. By setting the grooves 2A and 2B to such a width, it is possible to avoid the grooves 2A and 2B from coming into contact with the first light-transmitting member 31 and the second light-transmitting member 32. As a result, even if the grooves 2A and 2B are arranged, the covering member 2 can hold the plurality of light-emitting elements together. As the light-shielding member 2C, the same material as the above-described covering member 2 can be used. For example, those containing more light-reflective substances or light-absorbing substances than the covering member 2 can be mentioned.

[0018] (Light-transmitting member 3) The light-transmitting member 3 includes a plurality of first light-transmitting members 31 respectively disposed on the plurality of light-emitting elements 1, and a second light-transmitting member 32 disposed on the covering member 2 located outside the entire outer periphery of the light-emitting element 1. Note that the number of the first light-transmitting members 31 included in the light source 10 and the number of the light-emitting elements 1 may be the same or different. The size of the first light-transmitting member 31 may be smaller than, the same as, or larger than the light-emitting surface of the light-emitting element 1 (i.e., the upper surface of the light-emitting element 1) on which the first light-transmitting member 31 is disposed in a plan view. Among these, it is preferably the same as or larger than the upper surface of the light-emitting element. As shown in FIG. 1A, the first light-transmitting member 31 is more preferably disposed so as to be larger than the upper surface of the light-emitting element and enclose the upper surface of the light-emitting element in a plan view. The lower surface of the first light-transmitting member 31 is preferably the same shape as or a similar shape to the upper surface of the light-emitting element 1. In this case, the planar area of the first light-transmitting member 31 is, for example, 100% or more and 150% or less of the planar area of the upper surface of the light-emitting element, and preferably 100% or more and 130% or less. The first light-transmitting members 31 are disposed on a plurality of light-emitting elements and are preferably arranged in the same manner as the arrangement of the plurality of light-emitting elements. For example, as shown in FIG. 1B, the distance dx between the first light-transmitting members 31 adjacent in the x direction and the distance dy between the first light-transmitting members 31 adjacent in the y direction are preferably smaller than the distances Dx and Dy between the adjacent light-emitting elements, respectively. Thereby, in the light-emitting surface, the region with low luminance between the adjacent light-transmitting members can be made smaller.

[0019] The plurality of first light-transmitting members 31 included in the light source 10 may have the same planar shape and size as shown in FIG. 3A, or may have different planar shapes and sizes in part or in all. For example, as shown in FIG. 3B, the first light-transmitting member 31B may be disposed on one central light-emitting element, integrally disposed on the light-emitting elements adjacent thereto, i.e., on the light-emitting elements surrounding the one central light-emitting element, and further integrally disposed on the light-emitting elements surrounding them. The plurality of first light-transmissive members 31 are preferably arranged in a rectangular shape as a whole in a plan view, similar to the arrangement of the light-emitting elements. Further, the plurality of light-transmissive members 3 including one or more second light-transmissive members 32 are preferably arranged in a rectangular shape as a whole. The first light-transmissive member 31 may have different thicknesses in part or in whole, but it is preferable that the whole of the first light-transmissive member 31 has the same thickness. The thickness of the first light-transmissive member 31 can be appropriately adjusted according to the characteristics to be obtained, and examples thereof include 50 μm or more and 200 μm or less.

[0020] At least one second light-transmissive member 32 may be arranged on the covering member 2 arranged on the entire outer periphery of the light-emitting element 1, and a plurality of second light-transmissive members 32 may be arranged. In other words, the second light-transmissive member 32 is not arranged on the light-emitting element 1. For example, as shown in FIG. 1A, the second light-transmissive member 32 may be arranged in the x direction and the y direction on the covering member 2 arranged on the entire outer periphery of the light-emitting element 1, similar to the arrangement of the first light-transmissive members 31 arranged on the light-emitting element 1. In this case, the second light-transmissive member 32 may have the same shape and size as the first light-transmissive member 31 in a plan view, or may have a shape and size including a part of the shape of the first light-transmissive member 31. The second light-transmissive member can have a shape in which the width in the arrangement direction with respect to the first light-transmissive member arranged adjacent thereto is different in plan view. In this case, in plan view, the length of one side in the X direction of the second light-transmissive member 32 adjacent to the first light-transmissive member 31 in the X direction is preferably 5% or more and 100% or less, more preferably 25% or more and 75% or less, of the length of one side in the X direction of the first light-transmissive member arranged adjacent thereto. At this time, the length of one side in the Y direction of the second light-transmissive member 32 adjacent to the first light-transmissive member 31 in the X direction is preferably 100% or more of the length of one side in the Y direction of the first light-transmissive member arranged adjacent thereto. For example, as shown in FIG. 1A, the length Lx2 of one side in the X direction of the second light-transmissive member 32 is preferably 5% or more and 100% or less with respect to the length Lx1 of one side in the X direction of the first light-transmissive member 31 arranged adjacent thereto in the X direction. Similarly, the length Ly2 in the Y direction of the second light-transmissive member 32 is preferably 5% or more and 100% or less of the length Ly1 in the Y direction of the first light-transmissive member 31 arranged adjacent thereto in the Y direction. Thereby, the spread of light in the X direction in the first light-transmissive member 31 adjacent to the second light-transmissive member 32 can be approximated to the spread in the X direction in the first light-transmissive member 31 not adjacent to the second light-transmissive member (that is, adjacent to the first light-transmissive member 31). Similarly, from the viewpoint of approximating the spread in the x direction and / or y direction between the first light-transmissive member 31 adjacent to the second light-transmissive member 32 and the first light-transmissive member 31 not adjacent to the second light-transmissive member (that is, adjacent to the first light-transmissive member 31), the distance between the first light-transmissive member 31 and the second light-transmissive member 32 adjacent to each other in the x direction and / or y direction on the light-emitting surface of the light source 10 is preferably the same as the distance dx and / or dy between the first light-transmissive members 31 adjacent to each other in the x direction and / or y direction.

[0021] As shown in FIGS. 3A and 3B, only one second light-transmissive member 32A, 32B may be arranged so as to surround the entire light-emitting element 1 on the covering member 2 arranged on the entire outer periphery of the light-emitting element 1. In this case, the second light-transmissive members 32A, 32B are different in shape and size from the first light-transmissive member 31 in plan view. When a plurality of first light-transmissive members 31 are arranged in a rectangular shape as a whole in a plan view, one or more second light-transmissive members 32 can be arranged along the outer periphery of the rectangle. The second light-transmissive member 32 is thinner than the first light-transmissive member. In this case, a part of the second light-transmissive member 32 may be thinner than the first light-transmissive member, or all of the second light-transmissive member 32 may be thinner than the first light-transmissive member. Also, in part or all of the second light-transmissive member 32, the thickness may be different, or all of the second light-transmissive member 32 may have the same thickness. The thickness of the second light-transmissive member 32 is, for example, 10% or more and 90% or less of the thickness of the first light-transmissive member 31, preferably 30% or more and 80% or less, and more preferably 40% or more and 70% or more. Specifically, the thickness of the second light-transmissive member 32 can be appropriately adjusted according to the characteristics to be obtained, and is, for example, 15 μm or more and 160 μm or less.

[0022] In the light source 10, the upper surfaces of both the plurality of first light-transmissive members 31 and the second light-transmissive members 32 are exposed from the covering member 2. On the upper surface of the light source 10, it is preferable that the covering member 2 is arranged between adjacent first light-transmissive members 31 and second light-transmissive members 32. In this case, only a part in the thickness direction of the opposing side surfaces of the adjacent first light-transmissive members 31 and second light-transmissive members 32 may be covered by the covering member 2, but it is preferable that the entire thickness direction is covered by the covering member 2. In other words, in the light source 10, it is preferable that the upper surface of the covering member 2 and the upper surfaces of the plurality of first light-transmissive members 31 and second light-transmissive members 32 are flush. The side surface of the second light-transmissive member 32 that does not face the first light-transmissive member 31 or the second light-transmissive member 32, that is, the side surface facing the outside of the light source, does not have to be covered by the covering member 2. In other words, the second light-transmissive member 32 can have a side surface exposed from the covering member 2 that constitutes the outer side surface of the light source.

[0023] The light-transmitting member 3 is a member that transmits at least a part of the light emitted from the light-emitting element 1, and examples include those that transmit 60% or more of the light emitted from the light-emitting element, and those that preferably transmit 70% or more, 75% or more, or 80% or more of the light. Also, the shape is preferably plate-shaped. Specifically, the light-transmitting member 3 has an upper surface that serves as the light-emitting surface of the light source, a lower surface on the side opposite to the upper surface (that is, the surface on the side of the covering member), and a side surface between the upper surface and the lower surface. The lower surface of the first light-transmitting member 31 is disposed to face the upper surface of the light-emitting element 1, and the lower surface of the second light-transmitting member 32 is disposed to face the upper surface of the covering member 2 located on the outer periphery of the entire light-emitting element 1. The upper surface and the lower surface of the first light-transmitting member 31 are preferably flat surfaces that are substantially parallel to each other. The upper surface and the lower surface of the second light-transmitting member 32 may be flat surfaces that are substantially parallel to each other, or the lower surface of the second light-transmitting member 32 may be inclined with respect to the upper surface. For example, as shown in FIG. 1C, the lower surface of the second light-transmitting member 32' may have an inclined portion 32a. Also, the lower surface of the second light-transmitting member 32 may have irregularities on its surface. When the lower surface of the second light-transmitting member 32 has an inclined portion 32a that is inclined with respect to the upper surface, the inclined portion 32a preferably inclines so that the thickness becomes thinner on the side opposite to the first light-transmitting member 31, that is, toward the outside of the light source. Thereby, light leakage to the outside of the light source can be reduced. The inclined portion 32a of the lower surface of the second light-transmitting member 32 may be disposed on a part of the lower surface, or may be disposed over the entire lower surface. The side surface of the light-transmitting member 3 may be a surface perpendicular to the upper surface and / or the lower surface, or may have a surface inclined with respect to the upper surface and / or the lower surface. Among them, the side surface of the light-transmitting member 3 is preferably a side surface that is substantially perpendicular to the upper surface. The light-transmitting member 3 can be formed of a light-transmitting resin, glass, ceramics, or the like. As the light-transmitting resin, a resin containing one or more of a silicone resin, a modified silicone resin, an epoxy resin, a modified epoxy resin, an acrylic resin, and a fluororesin can be used.

[0024] In addition, the light-transmissive member 3 can contain a phosphor capable of wavelength-converting at least a part of the incident light. Examples of the light-transmissive member 3 containing a phosphor include a sintered body of a phosphor, a light-transmissive resin, glass, ceramics, etc. containing phosphor powder, and a member in which a layer containing a phosphor is disposed on the surface of a light-transmissive plate which is a molded body of a light-transmissive resin, glass, ceramics, etc. Examples of the phosphor include yttrium aluminum garnet-based phosphors (e.g., (Y,Gd)3(Al,Ga)5O 12 :Ce), lutetium aluminum garnet-based phosphors (e.g., Lu3(Al,Ga)5O 12 :Ce), terbium aluminum garnet-based phosphors (e.g., Tb3(Al,Ga)5O 12 :Ce), CCA-based phosphors (e.g., Ca 10 (PO4)6Cl2:Eu), SAE-based phosphors (e.g., Sr4Al 14 O 25 :Eu), chlorosilicate-based phosphors (e.g., Ca8MgSi4O 16 Cl2:Eu), silicate-based phosphors (e.g., (Ba,Sr,Ca,Mg)2SiO4:Eu), β-sialon-based phosphors (e.g., (Si,Al)3(O,N)4:Eu) or α-sialon-based phosphors (e.g., Ca(Si,Al) 12 (O,N) 16 :Eu) and other oxynitride-based phosphors, LSN-based phosphors (e.g., (La,Y)3Si6N 11 :Ce), BSESN-based phosphors (e.g., (Ba,Sr)2Si5N8:Eu), SLA-based phosphors (e.g., SrLiAl3N4:Eu), CASN-based phosphors (e.g., CaAlSiN3:Eu) or SCASN-based phosphors (e.g., (Sr,Ca)AlSiN3:Eu) and other nitride-based phosphors, KSF-based phosphors (e.g., K2SiF6:Mn), KSAF-based phosphors (e.g., K2(Si 1-x Al x )F 6-x: Mn, where 0 < x < 1 is satisfied. ) or a fluoride-based phosphor such as an MGF-based phosphor (e.g., 3.5MgO·0.5MgF2·GeO2:Mn), a quantum dot having a perovskite structure (e.g., (Cs,FA,MA)(Pb,Sn)(F,Cl,Br,I) 3、 FA and MA represent formamidinium and methylammonium, respectively. ), II-VI group quantum dots (e.g., CdSe), III-V group quantum dots (e.g., InP), or quantum dots having a chalcopyrite structure (e.g., (Ag,Cu)(In,Ga)(S,Se)2) etc. can be used.

[0025] A part or all of the plurality of light-transmissive members 3 may be formed only from a light-transmissive material, or a part or all of them may contain a phosphor. In this case, a part or all of the plurality of light-transmissive members 3 may contain the same phosphor, or a part or all of them may contain different phosphors. All of the plurality of light-transmissive members 3 may contain a phosphor that is excited by blue light and emits yellow light. Also, a part of the plurality of light-transmissive members 3 may contain a phosphor that is excited by blue light and emits yellow light, and another part may contain a phosphor that is excited by blue light and emits orange light. By adjusting the type or content of the phosphor contained in the light-transmissive member 3, light of a desired color can be emitted from the upper surface of the first light-transmissive member 31. Among them, when the emission peak wavelength of the plurality of light-emitting elements 1 is in the range of 400 nm or more and 490 nm or less, the plurality of light-transmissive members 3 preferably contain a phosphor having an emission peak wavelength in the range of 520 nm or more and 680 nm or less. Thereby, a light source 10 that emits white light can be obtained. And by the second light-transmissive member 32 containing the same phosphor as the first light-transmissive member 31, when the light source 10 is not lit, the appearance color of the phosphor is visually recognized as the appearance color of the light-transmissive member 3, and the appearance colors of the region directly above the plurality of light-emitting elements 1 and the entire outer peripheral region of the plurality of light-emitting elements can be made substantially the same.

[0026] In a light source including a plurality of light-emitting elements 1 that emit blue light, as shown in FIG. 3C, in the x-direction and the y-direction, the first light-transmissive members 31C and 31D having different emission colors emitted from the upper surface can be alternately arranged. For example, the first light-transmissive member 31C contains a phosphor that is excited by blue light and emits yellow light, and white light is emitted from the upper surface of the first light-transmissive member 31C. The first light-transmissive member 31D contains a phosphor that is excited by blue light and emits red light and a phosphor that emits yellow light, and orange light is emitted from the upper surface. Thereby, a light source capable of dimming the emission color in the range of white light to orange light can be obtained. In this case, corresponding to the first light-transmissive members 31C and 31D, it is preferable that the second light-transmissive members 32C and 32D are also alternately arranged in the x-direction and the y-direction. At this time, for example, the second light-transmissive member 32C contains a phosphor that emits yellow light in the same manner as the first light-transmissive member 31C, and the second light-transmissive member 32D contains a phosphor that emits red light and a phosphor that emits yellow light in the same manner as the first light-transmissive member 31D.

[0027] Further, in a light source including a plurality of light-emitting elements 1 that emit blue light, as shown in FIG. 3D, in the x-direction and the y-direction, the first light-transmissive members 31E, 31F, and 31G having different emission colors emitted from the upper surface can be alternately arranged. The first light-transmissive member 31E does not contain a phosphor, and blue light is emitted from the upper surface of the first light-transmissive member 31E. The first light-transmissive member 31F contains a phosphor that is excited by blue light and emits red light, and red light is emitted from the upper surface. The first light-transmissive member 31G contains a phosphor that is excited by blue light and emits green light, and green light is emitted from the upper surface. Thereby, since blue, green, and red light are emitted, a light source capable of multi-color display can be obtained. In this case, corresponding to the first light-transmissive members 31C, 31E, and 31F, it is preferable that the second light-transmissive members 32E, 32F, and 32G are also arranged in order in the x-direction and the y-direction. At this time, the second light-transmissive member 32E does not contain a phosphor in the same manner as the first light-transmissive member 31E, the second light-transmissive member 32F contains a phosphor that emits red light in the same manner as the first light-transmissive member 31F, and the second light-transmissive member 32G contains a phosphor that emits green light in the same manner as the first light-transmissive member 31G.

[0028] The distances between adjacent light-transmissive members 3 may be different or the same between adjacent first light-transmissive members, between an adjacent first light-transmissive member and a second light-transmissive member, and between adjacent second light-transmissive members. For example, the range is 10 μm or more and 200 μm or less, and a range of 20 μm or more and 100 μm or less is preferable.

[0029] By arranging such a plurality of light-transmissive members 3, that is, by arranging the first light-transmissive member 31 on a plurality of light-emitting elements 1 and the second light-transmissive member 32 on a light-shielding member located on the entire outer periphery of the plurality of light-emitting elements 1, respectively, when the light source is visually recognized from the light-emitting surface side of the light source, the area of the covering member 2 exposed at the outer periphery of the light source can be reduced or eliminated. As a result, for example, when the light source is visually recognized from the outside, the outer peripheral covering member 2 becomes less conspicuous, and the designability of the light source can be improved. In particular, the color difference between the light-transmissive member 3 and the covering member 2 when the light source 10 is not lit can be reduced. Also, regarding the light incident from the outside when the light source is not lit, lateral light leakage from the second light-transmissive member arranged on the outer periphery can be reduced due to its thickness. Therefore, when viewed from the light extraction surface, regardless of the presence or absence of the light-emitting elements directly below the light-transmissive member, a substantially uniform appearance color can be obtained on the entire light extraction surface side of the light source, and the designability can be improved.

[0030] Furthermore, since the light source 10 includes the second light-transmissive member 32, on the upper surface of the light source 10, the width of the covering member 2 surrounding the upper surface of the first light-transmissive member 31 disposed on the inner light-emitting element 1 and the width of the covering member 2 surrounding the upper surface of the first light-transmissive member 31 disposed on the outer light-emitting element 1 can be made substantially equal. Thereby, in the light passing through the first light-transmissive members 31 located on the inner and outer sides, the spread of each light can be approximated. That is, since the light source 10 includes the second light-transmissive member 32, the light emitted from the outer light-emitting element 1 is blocked by the covering member 2 located on the entire outer periphery of the light-emitting element, and it is possible to reduce the occurrence of variations in the light distribution on the light-emitting surface side of the light source. Thus, according to the present embodiment, when a specific light-emitting element among a plurality of light-emitting elements is lit, a light source can be obtained in which the light distributions of the light emitted from the first light-transmissive member 31 located on the outer side and the first light-transmissive member 31 located on the inner side are equivalent. Also, when the light source is lit, lateral light leakage from the second light-transmissive member disposed on the outer periphery can be reduced due to its thickness. Thereby, stray light such as reflection and scattering of unnecessary light generated outside the light-emitting region of the light source can be reduced.

[0031] (Third light-transmissive member 4) As shown in FIGS. 4 and 5, the light sources 10A and 10B of one embodiment may further include a third light-transmissive member 4 that covers the upper surface of the light-transmissive member 3. Similar to the light-transmissive member 3, the second light-transmissive member 4 can be formed of a light-transmissive resin, glass, ceramics, or the like. As the light-transmissive resin, a resin containing one or more of silicone resin, modified silicone resin, epoxy resin, modified epoxy resin, acrylic resin, and fluororesin can be used. The third light-transmissive member 4 may contain a light-diffusing substance. Examples of the light-diffusing substance include particles such as titanium oxide, aluminum oxide, silicon oxide, and zinc oxide. By providing the third light-transmissive member 4 containing such a light-diffusing substance, the light emitted from the light-emitting element 1 can be diffused and emitted to the outside. Thereby, uneven light emission on the upper surface of the light-transmissive member 3 can be suppressed. The third light-transmitting member 4 may be formed of a resin that absorbs little visible light, such as polycarbonate resin, polystyrene resin, or polyethylene resin. The surface of the third light-transmitting member 4 may be flat or may have fine irregularities or the like. As shown in FIG. 4, a light source 10 according to an embodiment includes a third light-transmitting member 4 that integrally covers the entire first light-transmitting member 31 and the second light-transmitting member 32. In this case, the third light-transmitting member 4 collectively covers the upper surface of the light source 10A, including the covering member 2 between the light-transmitting members 3. Thereby, the adhesion between the members can be improved. Also, as shown in FIG. 5, a light source 10B according to an embodiment includes a plurality of third light-transmitting members 4B that respectively cover the upper surfaces of the first light-transmitting member 31 and the second light-transmitting member 32. The plurality of third light-transmitting members 4B are disposed on the first light-transmitting member 31 and the second light-transmitting member 32, respectively. Similar to the first light-transmitting member 31 and the second light-transmitting member 32, it is preferable that the covering member 2 is disposed between the third light-transmitting members 4B so that the covering member 2 covers the side surfaces of each third light-transmitting member 4B. Thereby, unintended light propagation between the third light-transmitting members can be reduced. A part or all of the plurality of third light-transmitting members 4 may have different thicknesses, or all of the third light-transmitting members 4 may have the same thickness. Among them, it is preferable that all of the third light-transmitting members 4 have substantially the same thickness. The thickness of the third light-transmitting member 4 can be appropriately adjusted according to the characteristics to be obtained. For example, it may be 20 μm or more and 100 μm or less.

[0032] The third light-transmitting member 4 has a function of diffusing and guiding the light emitted from the light-emitting element 1. The third light-transmitting member 4 may be a single layer or may have a laminated structure including a plurality of layers. The third light-transmitting member 4 has, for example, a total light transmittance (Tr) of 30% to 99% and a diffusion rate (D) of 10% to 90%. The thickness of the third light-transmitting member 4 may be 10 μm or more and 200 μm or less. The third light-transmissive member 4 may be in contact with the upper surfaces of the covering member 2 and the light-transmissive member 3, or may be disposed at a distance from the upper surfaces of the covering member 2 and the light-transmissive member 3. Among these, it is preferable that the lower surface of the third light-transmissive member 4 is in direct contact with the upper surfaces of the covering member 2 and the light-transmissive member 3. Thereby, the light from the light-emitting element 1 can be efficiently introduced into the third light-transmissive member 4, and the light extraction efficiency can be improved.

[0033] (Wiring board 50) As shown in FIGS. 4 and 5, in a light source 10A, 10B according to an embodiment, a plurality of light-emitting elements 1 may be placed on a wiring board 50. The wiring board 50 has, for example, a substantially rectangular parallelepiped shape. The wiring board 50 includes at least a wiring 51 connected to the light-emitting element 1 on its upper surface and a substrate 52 that supports the wiring 51. Examples of the substrate 52 include ceramics such as aluminum oxide, aluminum nitride, silicon nitride, and mullite, epoxy resins, silicone resins, modified epoxy resins, modified silicone resins, urethane resins, phenolic resins, polyimide resins, BT resins, polyphthalamide, etc. resins, semiconductors such as silicon, and single materials of metals such as copper and aluminum and composite materials thereof can be used. Among these, it is preferable to use ceramics having excellent heat dissipation properties. The wiring 51 includes an upper surface wiring 51 disposed at least on the upper surface of the substrate 52. Further, the wiring board 50 may have a lower surface wiring disposed on the lower surface of the substrate 52 and wirings disposed inside and / or on the side surfaces of the substrate 52. Note that the wiring 51 may be partially different in thickness or the like. Examples of the wiring 51 include metals such as iron, copper, nickel, aluminum, gold, silver, platinum, titanium, tungsten, palladium, or alloys containing these. When the light sources 10A, 10B are placed on the wiring board 50, it is preferable that the covering member 2 is also disposed between the wiring board 50 and the light-emitting element 1.

[0034] 〔Method for manufacturing a light source〕 The above-described light source 10 is manufactured by preparing a translucent sheet, forming a plurality of groove portions in the translucent sheet to divide the translucent sheet into a plurality of translucent members, thinning an arbitrary translucent member divided by the groove portions, placing light-emitting elements on the surfaces of the plurality of translucent members that are divided by the groove portions and not thinned, disposing a covering member on the translucent members, in the groove portions, and between the light-emitting elements from the side of the light-emitting elements, and individually separating the laminate for each of the plurality of translucent members and light-emitting elements so that the thinned arbitrary translucent member is disposed on the outermost periphery. Further, after disposing the covering member, grooves surrounding the entirety of the plurality of light-emitting elements may be formed outside the outer periphery of the entirety of the plurality of light-emitting elements in the covering member, or grooves may be formed between the plurality of light-emitting elements. Furthermore, a light-shielding member may be disposed in these grooves. Also, a conductive film 8 connected to the positive electrode 1p and the negative electrode 1n of the light-emitting element 1 exposed from the covering member 2 may be formed on the surface of the covering member 2. By forming such a conductive film 8, it becomes possible to substantially increase the surface area of the positive electrode 1p and the negative electrode 1n of the light-emitting element 1 exposed from the covering member 2, and the connectivity to a wiring board or the like can be improved.

[0035] (Preparation of the translucent sheet 3a) As shown in FIG. 6A, a translucent sheet 3a is prepared. The translucent sheet 3a is to be individually separated into a plurality of translucent members 3 later by forming groove portions. The translucent sheet 3a may be a laminated sheet in which a third translucent member 4 is laminated on the translucent sheet 3a, or may be a laminated sheet in which a tape or the like to be removed later, such as a dicing tape, is laminated on the translucent sheet 3a. Each layer may be integrally laminated directly or via a translucent adhesive or the like.

[0036] (Formation of groove portions in the translucent sheet 3a) As shown in FIG. 6B, a plurality of groove portions penetrating the translucent sheet 3a are formed in the translucent sheet 3a to divide the translucent sheet 3a into a plurality of translucent members 3. When using the laminated sheet 6 in which the third translucent member 4 is laminated on the translucent sheet 3a, groove portions 3b having a depth equal to or greater than the thickness of the translucent sheet 3a are formed from the side of the translucent sheet 3a. The groove portions 3b preferably have a depth such that they do not penetrate the third translucent member 4 or the like, that is, a depth smaller than the thickness of the laminated sheet 6. Thereby, the plurality of divided translucent members 3 can be collectively held as the laminated sheet 6. The groove portions 3b may be formed using a blade or the like, or may be formed by etching using a mask member or the like.

[0037] (Thinning of the translucent member 3) As shown in FIG. 6C, among the plurality of translucent members 3 divided by the groove portions 3b, an arbitrary translucent member 3 is thinned. The thinning may be performed by any method known in the art. For example, it can be performed by scraping the surface of an arbitrary translucent member 3 by polishing, a blade, grinding, or the like. The translucent member 3 to be thinned is one or a plurality of translucent members arranged on the outer periphery of an arbitrary number of translucent members 3 used to form one light source. Among them, it is preferable to thin all of the translucent members arranged on the entire outer periphery of an arbitrary number of translucent members 3 used to form one light source. Specifically, those corresponding to the positions of the second translucent members 32, 32A, 32B shown in FIGS. 1A, 3A, 3B, etc. can be mentioned.

[0038] (Arrangement of the light-emitting element 1) As shown in FIG. 6D, the light-emitting elements 1 are respectively placed on the surfaces of the plurality of translucent members 3 that have not been subjected to the thinning process. In this case, the light-emitting surface of the light-emitting element 1 is arranged to face the translucent member 3. The light-emitting surface of the light-emitting element 1 and the translucent member 3 may be fixed so as to be in direct contact, or may be fixed using a translucent adhesive or the like. Incidentally, either the thinning of the translucent member 3 or the arrangement of the light-emitting elements 1 described above may be performed first. For example, after arranging the light-emitting elements 1 on an arbitrary divided translucent member, a thinning process may be performed on the translucent member 3 on which the light-emitting elements 1 are not arranged.

[0039] (Formation of the covering member 2) Next, the covering member 2 is arranged on the translucent member 3, in the groove portion 3b, and between the light-emitting elements 1. The material constituting the covering member 2 may cover all of the plurality of light-emitting elements 1 so as to embed them, or may cover them so as to expose the electrodes of the light-emitting elements 1 as shown in FIG. 6E. Further, after covering all of the plurality of light-emitting elements 1, that is, covering all including the electrodes, a part of the material constituting the covering member 2 may be removed so as to expose the electrodes of the light-emitting elements 1. Such removal can be performed by a method known in the art, such as etching or grinding.

[0040] (Fragmentation) Subsequently, as shown in FIG. 6F, the laminate is fragmented for each of the plurality of first translucent members 31, second translucent members 32, and light-emitting elements 1 so that the thinned second translucent member 32 is disposed on the outermost periphery. In other words, between the light-emitting elements 1, in the thinned second translucent member 32, fragmentation is performed so as to cut at least all in the thickness direction of the translucent sheet 3a. The fragmentation can be performed by laser dicing, blade dicing, or the like. The fragmentation is preferably performed, for example, at a portion outside the contour (broken line Q) connecting the outer side surfaces 1s of the light-emitting elements 1g located outside in FIG. 2. By these series of methods, the light source 10 can be formed. The manufacturing method of the light source 10 may further include the following steps.

[0041] (Formation of grooves) As shown in FIG. 6G, after arranging the covering member 2, grooves 2A may be formed on the covering member 2 on the outer periphery of the plurality of light-emitting elements, or grooves 2B may be formed between adjacent light-emitting elements 1. Either the groove 2A or the groove 2B may be formed first. Further, the grooves 2A and 2B may be formed after forming the covering member 2 and before singulation. The grooves 2A and 2B can be formed by laser dicing, blade dicing, or the like.

[0042] (Formation of the light-shielding member 2C) Furthermore, after forming the groove 2A and / or the groove 2B, the light-shielding member 2C may be disposed in the grooves 2A and 2B. The light-shielding member 2C may be disposed only in the grooves 2A and 2B so as to expose the electrodes of the light-emitting element 1. Alternatively, as shown in FIG. 6H, after covering all of the plurality of light-emitting elements 1, that is, covering all including the electrodes, as shown in FIG. 6I, a part of the material constituting the light-shielding member 2C may be removed so as to expose the electrodes of the light-emitting element 1. Such removal can be performed by a method known in the art, such as etching or grinding.

[0043] (Formation of the conductive film 8) As shown in FIG. 6J, a conductive film 8a is formed on the covering member 2 and the electrodes exposed from the covering member 2. The conductive film 8a may be a material having conductivity, and can be formed of a metal such as copper, aluminum, gold, silver, platinum, titanium, tungsten, palladium, iron, nickel, or an alloy containing these metals. Thereafter, for example, by removing a part of the conductive film 8a covering the covering member 2 by etching, laser ablation, or the like, as shown in FIG. 6K, a conductive film 8 can be formed in which a part covers the electrodes and the other part covers the covering member 2. The thickness of the conductive film can be appropriately set according to the performance to be obtained, the material used, and the like. For example, when the removal of the conductive film is performed by laser ablation, the thickness of the conductive film is preferably 1 μm or less, and more preferably 10 nm or more and 100 nm or less.

[0044] 〔Light-emitting module〕 As shown in FIG. 7, a light-emitting module 20 according to an embodiment includes a module substrate 21 and a light source 10 disposed on the module substrate 21. The substrate 21 includes a wiring layer on its surface, and the wiring layer is formed so that, for example, light-emitting elements can be matrix-driven in segment units. The light source 10 may be disposed on the module substrate 21 via a submount such as a wiring substrate 50. The light-emitting module 20 may include a lens 11 disposed on the light source 10. As the lens 11 here, lenses that exhibit various functions, such as a convex lens, a concave lens, and a Fresnel lens, can be used. Further, in order to support the lens 11, a housing 12 may be provided. Even in a light-emitting module including the lens 11, when the light source 10 is viewed through the lens 11, the white color on the outer periphery of the light source 10 is difficult to be visually recognized, and a light-emitting module with a good appearance through the lens can be obtained.

[0045] The embodiments according to the present disclosure include the following technical matters. (1) A plurality of light-emitting elements, a covering member that exposes upper surfaces of the plurality of light-emitting elements and is disposed between and on the entire outer periphery of the plurality of light-emitting elements to hold the plurality of light-emitting elements together, and a plurality of translucent members. The plurality of translucent members include a plurality of first translucent members respectively disposed on the plurality of light-emitting elements, and at least one second translucent member disposed on the covering member located on the outer periphery and having a thickness smaller than that of the first translucent member. (2) The light source according to (1), wherein the covering member exposes upper surfaces of the plurality of translucent members and is disposed between the plurality of translucent members. (3) The light source according to (1) or (2), wherein the second translucent member has irregularities on a surface on the covering member side. (4) The light source according to any one of (1) to (3), wherein the second translucent member has an inclined portion on a surface on the covering member side. The light source according to any one of (1) to (4), further comprising a plurality of third light-transmissive members that respectively cover the upper surfaces of the plurality of light-transmissive members. The light source according to any one of (1) to (5), wherein the covering member constitutes a part of the lower surface of the light source, and in the lower surface, a groove is provided on the entire outer periphery of the plurality of light-emitting elements. The light source according to any one of (1) to (6), wherein the covering member constitutes a part of the lower surface of the light source, and in the lower surface, a groove is provided between the light-emitting elements. The light source according to (6) or (7), wherein a light-shielding member is disposed in the groove. (9) The plurality of first light-transmissive members are arranged such that the entire outer periphery is rectangular in plan view, The light source according to any one of (1) to (8), wherein a plurality of the second light-transmissive members are arranged along the outer periphery of the rectangle. (10) The light source according to (9), wherein the plurality of second light-transmissive members have side surfaces that are exposed from the covering member and constitute the outer side surface of the light source. (11) The distance between adjacent first light-transmissive members is smaller than the distance between adjacent light-emitting elements. The light source according to any one of (1) to (10). (12) The plurality of light-transmissive members contain a phosphor. The light source according to any one of (1) to (11). (13) The emission peak wavelengths of the plurality of light-emitting elements are in the range of 400 nm or more and 490 nm or less, The light source according to any one of (1) to (12), wherein the plurality of light-transmissive members include a phosphor having an emission peak wavelength in the range of 520 nm or more and 680 nm or less. (14) In plan view, the second light-transmissive member is disposed adjacent to the first light-transmissive member, and in the arrangement direction of the adjacent second light-transmissive member and the first light-transmissive member, the width of the second light-transmissive member is 5% or more and 100% or less of the width of the adjacent first light-transmissive member. The light source according to any one of (1) to (13). (15) A light-emitting module including the light source according to any one of (1) to (14) and a module substrate on which the light source is mounted. The light-emitting module according to (15), further comprising a lens disposed on the light source.

Industrial Applicability

[0046] The light source and the light-emitting module of the present disclosure can be used for the flash light source of a camera, the headlight of a vehicle, the backlight of a liquid crystal display, various lighting fixtures, etc.

Explanation of Signs

[0047] 1, 1g Light-emitting element 1a Upper surface 1b Lower surface 1n Negative electrode 1p Positive electrode 1s Side surface 2 Coating member 2A Groove 2B Groove 2C Light-shielding member 3 Translucent member 31, 31B, 31C, 31D, 31E, 31F, 31G First translucent member 32, 32’, 32A, 32B, 32C, 32D, 32E, 32F, 32G Second translucent member 32a Inclined portion 3a Translucent sheet 3b Groove portion 4, 4B Third translucent member 6 Laminated sheet 8 Conductive film 10, 10A, 10B Light source 11 Lens 12 Housing 20 Light-emitting module 21 Module substrate 50 Wiring substrate 51 Wiring 52 Substrate

Claims

1. A plurality of light-emitting elements, a coating member that exposes upper surfaces of the plurality of light-emitting elements, is disposed between the plurality of light-emitting elements and on an outer periphery of the entire plurality of light-emitting elements, and holds the plurality of light-emitting elements together, and a plurality of translucent members, wherein the plurality of translucent members include a plurality of first translucent members respectively disposed on the plurality of light-emitting elements, and at least one second translucent member disposed only on the coating member located on the outer periphery of the entire plurality of light-emitting elements and having a smaller thickness than the first translucent members.

2. The light source according to claim 1, wherein the coating member exposes upper surfaces of the plurality of translucent members and is disposed between the plurality of translucent members.

3. The light source according to claim 1, wherein the second translucent member has irregularities on a surface on the coating member side.

4. The light source according to claim 1, wherein the second translucent member has an inclined portion on a surface on the coating member side.

5. The light source according to claim 1, further comprising a plurality of third translucent members that respectively cover upper surfaces of the plurality of translucent members.

6. The light source according to claim 1, wherein the coating member constitutes a part of a lower surface of the light source, and the lower surface has a groove on an outer periphery of the entire plurality of light-emitting elements.

7. The light source according to claim 1, wherein the coating member constitutes a part of a lower surface of the light source, and the lower surface has a groove between the light-emitting elements.

8. The light source according to claim 6, wherein a light-shielding member is disposed in the groove.

9. The plurality of first translucent members are arranged such that an outer periphery of the whole is rectangular in plan view, and the second translucent members are arranged in plurality along the rectangular outer periphery.

10. The light source according to claim 9, wherein the plurality of second translucent members have side surfaces that are exposed from the coating member and constitute an outer side surface of the light source.

11. The light source according to claim 1, wherein a distance between adjacent first translucent members is smaller than a distance between adjacent light-emitting elements.

12. The light source according to claim 1, wherein the plurality of translucent members contain a phosphor.

13. The light-emitting peak wavelength of the plurality of light-emitting elements is in a range of 400 nm or more and 490 nm or less, and the plurality of translucent members include a phosphor having a light-emitting peak wavelength in a range of 520 nm or more and 680 nm or less.

14. In a plan view, the second light-transmissive member is disposed adjacent to the first light-transmissive member, and in the arrangement direction of the adjacent second light-transmissive member and the first light-transmissive member, the width of the second light-transmissive member is 5% or more and 100% or less of the width of the adjacent first light-transmissive member. The light source according to claim 1.

15. The light source according to claim 7, wherein a light-shielding member is disposed in the groove.

16. A light source according to any one of claims 1 to 15, a module substrate on which the light source is mounted, and a light-emitting module comprising the same.

17. The light-emitting module according to claim 16, further comprising a lens disposed on the light source.

Images