Light emitting device

Abstract

To provide a light emitting device with high luminance performance.SOLUTION: A light emitting device of the present invention comprises a support with mounting surface and side walls and a light source placed on the mounting surface, and the light source has a plurality of light emitting elements and a light reflecting member integrally covering the sides of the plurality of light emitting elements, and is configured such that the light source is separated from the side walls of the support.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a light emitting device. [Background technology]

[0002] Conventionally, a display using an LED is known, for example, from Patent Document 1. In addition, a method of disposing a sealing member containing a light reflecting member on the side surface of a light emitting element is known, for example, from Patent Document 2. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. WO2020 / 079921 [Patent Document 2] JP 2002-335020 A Summary of the Invention [Problem to be solved by the invention]

[0004] 2. Description of the Related Art Light-emitting devices used in display devices such as displays may be required to have high brightness depending on the application. Specifically, there is a demand for further improvements in brightness for light-emitting devices used in outdoor advertising billboards, products for traffic lights and road sign panels, indoor advertising displays, displays used in arenas, destination signs, and the like.

[0005] The present invention has been made in consideration of the above circumstances, and an object of an embodiment of the present invention is to provide a light emitting device capable of further improving the luminance. [Means for solving the problem]

[0006] The present invention solves the above-mentioned problems, and provides a light-emitting device according to one embodiment of the present invention, comprising a support having a mounting surface and a side wall, and a light source arranged on the mounting surface, the light source having a plurality of light-emitting elements and a light-reflecting member integrally covering the side surfaces of the plurality of light-emitting elements, and the light source is arranged so as to be separated from the side wall of the support. Effect of the Invention

[0007] According to one embodiment of the light-emitting device of the present invention, by arranging the light-reflecting member on the side surface of the light-emitting element so as to be spaced apart from the side wall of the support, it is possible to obtain a light-emitting device with even higher brightness than conventional light-emitting devices.

[0008] Problems, configurations, actions, and effects other than those described above will become apparent from the detailed description of the invention described below. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic top view of a light emitting device according to a first embodiment. [Diagram 2] 2a is a schematic cross-sectional view of the light emitting device taken along line II-II in FIG. 1, and FIG. 2b is a schematic cross-sectional view of the light source taken along line II-II in FIG. [Diagram 3] 2 is a schematic cross-sectional view of the light emitting device taken along line III-III in FIG. [Figure 4] FIG. 4 is a schematic top view of a light emitting device according to a second embodiment. [Diagram 5] FIG. 11 is a schematic cross-sectional view of a light emitting device according to a third embodiment. [Figure 6] 6 is a schematic cross-sectional view of the light emitting device taken along line VI-VI in FIG. 5. [Figure 7] FIG. 11 is a schematic top view of a light emitting device according to a modified example of the third embodiment. [Figure 8] 8 is a schematic cross-sectional view of the light emitting device taken along line VIII-VIII in FIG. 7. [Figure 9] 8 is a schematic cross-sectional view of the light emitting device taken along line IX-IX in FIG. 7. [Figure 10]FIG. 11 is a schematic top view of a light emitting device according to a fourth embodiment. [Figure 11] 11 is a schematic cross-sectional view of the light emitting device taken along line XI-XI in FIG. [Figure 12] FIG. 11 is a schematic top view of a light emitting device according to embodiment 5. [Figure 13] 13 is a schematic cross-sectional view of the light emitting device taken along line XIII-XIII in FIG. 12. [Figure 14] FIG. 13 is a schematic top view of a light emitting device according to a modified example of the fifth embodiment. [Figure 15] FIG. 13 is a schematic top view of the light emitting device of the sixth embodiment. [Figure 16] 16 is a schematic cross-sectional view of the light emitting device taken along line XVI-XVI in FIG. 15, and a conceptual diagram of the light emitting device used as a display device outdoors. [Figure 17] FIG. 13 is a diagram showing a part of the lighting device of the sixth embodiment as seen by an observer. [Figure 18] 13 shows an outdoor use of the light emitting device according to the third embodiment. [Figure 19] 19a and 19b are schematic cross-sectional views of modified examples of the light source. [Figure 20] 20a and 20b are schematic cross-sectional views of modified examples of the light source. [Figure 21] 21a and 21b are schematic cross-sectional views of modified examples of the light source. [Figure 22] FIG. 11 is a schematic cross-sectional view of a modified example of the light source. [Figure 23] FIG. 11 is a schematic cross-sectional view of a modified example of the light source. [Figure 24] FIG. 11 is a schematic cross-sectional view of a modified example of the light source. [Diagram 25] FIG. 11 is a schematic cross-sectional view of a modified example of the light source. [Figure 26] FIG. 11 is a schematic cross-sectional view of a modified example of the light source. [Figure 27] FIG. 11 is a schematic cross-sectional view of a modified example of the light source.

[0010] Hereinafter, each embodiment will be described with reference to the drawings. Since each drawing is a schematic illustration of each embodiment, the scale, interval, or positional relationship of each member may be exaggerated, or some of the members may be omitted. In this specification, the arrow direction of the Z axis is the upward direction, and the direction opposite to the arrow direction of the Z axis is the downward direction. Viewing an object from above is called a top view, and the top view is synonymous with a planar view. In this specification, the arrow direction of the X axis is the +X direction, the direction opposite to the arrow direction of the X axis is called the -X direction, the arrow direction of the Y axis is called the +Y direction, and the direction opposite to the arrow direction of the Y axis is called the -Y direction. In addition, as a cross-sectional view, an end view showing only a cut surface may be shown.

[0011] In the following description, components having substantially the same functions are indicated by common reference symbols, and descriptions thereof may be omitted. In addition, terms indicating a specific direction or position (for example, "upper", "lower", and other terms including these terms) may be used. However, these terms are merely used for the purpose of making the relative direction or position in the referenced drawings easier to understand. As long as the relationship of the relative direction or position by terms such as "upper" and "lower" in the referenced drawings is the same, the arrangement may not be the same in drawings other than the present disclosure, in actual products, etc., as in the referenced drawings. In this specification, the positional relationship expressed as "upper" includes cases where the two are in contact and cases where the two are not in contact but are located above. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] [Embodiment 1] The light emitting device 101 of the first embodiment will be described with reference to Figs. 1 to 6. Fig. 1 is a view of the light emitting device 101 from the light emitting surface side. As shown in Fig. 1, two directions parallel to the light emitting surface of the light emitting device 101 and perpendicular to each other are defined as the X direction and the Y direction. The direction perpendicular to the X direction and the Y direction is defined as the Z direction. In this specification, a plane parallel to the X direction and the Y direction may be referred to as the XY plane. In addition, a direction inclined at an angle of 0° or more and less than 360° from the X direction in the XY plane may be referred to as the horizontal direction, and the Z direction may be referred to as the vertical direction. In the first embodiment, the light emitting device 101 in which the light source 200 is an LED is described, but the light source 200 of the light emitting device 101 is not limited to an LED. It can be easily understood by those skilled in the art that the light source 200 may be any light source that can be adopted in the light emitting device 101 that requires high brightness. The same applies to other embodiments described later.

[0013] The light emitting device 101 of the first embodiment includes a support 300 having a mounting surface 320 and a side wall 310, and a light source 200 arranged on the mounting surface 320. The light source 200 has a plurality of light emitting elements 210 and a light reflecting member 220 integrally covering the side surfaces of the plurality of light emitting elements 210, and is characterized in that the light source 200 is separated from the side wall 310. The light emitting element 210 has an upper surface, a lower surface, and a side surface. The lower surface of the light emitting element 210 faces the mounting surface 320 of the support 300. The upper surface of the light emitting element 210 is located on the opposite side to the lower surface of the light emitting element 210. The side surface of the light emitting element 210 is located between the upper surface of the light emitting element 210 and the lower surface of the light emitting element 210.

[0014] (Support 300) The support 300 is a member on which the light source 200 is placed. The support 300 has a placement surface 320 and a side wall 310. The light source 200 is placed on the placement surface 320 of the support 300. The light source 200 may be joined to the placement surface 320 of the support 300 by a known adhesive member 720 such as resin, solder, conductive paste, etc. In addition, the placement surface 320 is preferably a flat surface. The placement surface 320 may be a curved surface or may have minute irregularities, as long as the light source 200 can be placed thereon. The shape of the side wall 310 of the support 300 is not particularly limited. In FIG. 2a, the side wall 310 of the support 300 is shaped to expand toward the upward direction of the light.

[0015] The support 300 of the first embodiment is composed of a support member made of resin as a base material and a plurality of conductive members 410. The plurality of conductive members 410 are fixed by the support member. The conductive members 410 and the light emitting element 210 are electrically connected to each other via wires 420.

[0016] As shown in Fig. 2a, a part of the inner surface defining the side wall 310 of the support 300 may be flat or may not be flat. The inner surface defining the side wall 310 may be curved, may have a shape including concaves and convexes, or may be entirely flat with a part including a curved surface or fine concaves and convexes. The same can be said about the surfaces of the light emitting element 210 and other members. For example, a part of the shape of the inner surface defining the side wall 310 in a cross-sectional view may be parabolic.

[0017] As shown in FIG. 2a, the height of the sidewall 310 of the support 300 is preferably higher than the height of the light-emitting surface of the light source 200. In this way, it is easy to reduce the application of external force from the lateral direction to the light source 200. In addition, even if moisture enters through a gap between the translucent member 500 and the sidewall 310 described later, the height of the sidewall 310 can be increased to increase the distance from the point where the moisture entered to the light source. This reduces contact between the moisture and the light source, making it easy to improve the reliability of the light-emitting device 101. In this specification, the height of each member is the value when the distance from the mounting surface 320 of the support 300 to each member is maximum in the vertical direction. For example, the height of the sidewall 310 of the support 300 is the value when the distance from the mounting surface 320 of the support 300 to the sidewall 310 of the support 300 is maximum in the vertical direction.

[0018] The height of the side wall of the support 300 may be lower than the height of the light source 200. Depending on the application of the light emitting device 101 and the size required for the light emitting device 101, the height of the side wall 310 of the support 300 may be the same as the height of the irradiation surface of the light source 200, or the height of the side wall 310 of the support 300 may be lower than the height of the light source 200. In another embodiment described later, an example in which the height of the side wall 310 of the support 300 is lower than the height of the irradiation surface of the light source 200 will be shown. When the height of the side wall 310 of the support 300 is lowered, the light emitting device 101 can be easily miniaturized in the vertical direction.

[0019] The support member may use known materials such as thermoplastic resins and thermosetting resins as the resin material serving as the base material. In the case of thermoplastic resins, for example, polyphthalamide resins, polybutylene terephthalate (PBT), unsaturated polyesters, etc. may be used. In the case of thermosetting resins, for example, epoxy resins, modified epoxy resins, silicone resins, modified silicone resins, etc. may be used. In particular, it is preferable to use thermosetting resins such as epoxy resins and silicone resins, which have excellent heat resistance and light resistance, as the resin material.

[0020] The support member may have a colorant added to the resin material serving as the base material. As the colorant, various dyes and pigments are suitably used. Specifically, Cr2O3, MnO2, Fe2O3, carbon black, titanium black, etc. may be mentioned. The amount of the colorant added may be, for example, 0.3 mass% or more and 3.5 mass% or less, preferably 1.0 mass% or more and 2.5 mass% or less, relative to the resin material serving as the base material. For example, the resin member 13 may be polyphthalamide (PPA) to which 2 mass% of dark-colored particles such as carbon have been added. The support member may contain a glass filler, etc. By containing the glass filler in the support member, the strength of the support member is easily improved. The glass filler may be colored dark with carbon black, titanium black, etc.

[0021] By making the support member out of a dark-colored resin such as black or gray, it becomes easier to reduce reflection of external light such as sunlight and indoor light by the support member. This makes it easier to reduce a decrease in the contrast ratio between when the light-emitting device 101 is turned on and when it is turned off, which is caused by reflection of external light. In this specification, "dark colors" refer to colors with a brightness of 4.0 or less in the Munsell color system (20 hues). There are no particular limitations on the hue, and the saturation can be determined arbitrarily as necessary. Preferably, the brightness is 4.0 or less and the saturation is 4.0 or less.

[0022] The base material of the conductive member 410 may be, for example, a metal such as copper, aluminum, gold, silver, iron, nickel, or an alloy thereof, phosphor bronze, or copper containing iron. These may be a single layer or a multilayer structure (for example, a clad material). In particular, it is preferable to use copper, which is inexpensive and has high heat dissipation properties, as the base material. The conductive member 410 may have a metal layer on the surface of the base material. The metal layer includes, for example, gold, silver, aluminum, nickel, palladium, rhodium, copper, or an alloy thereof. The metal layer may be provided on the entire surface of the conductive member 410, or may be provided partially.

[0023] (Light source 200) The light source 200 in this specification has at least one light emitting element 210 and a light reflecting member 220. The light emitting device 101 may have at least one light source 200 composed of the light emitting element 210 and the light reflecting member 220. The light source 200 in the first embodiment has a plurality of light emitting elements 210, including a first light emitting element 211, a second light emitting element 212, and a third light emitting element 213. In this specification, the first light emitting element 211, the second light emitting element 212, and / or the third light emitting element 213 may be referred to as the light emitting element 210. When the light emitting device 101 has a plurality of light sources, all of the light sources may have a light reflecting member 220 that covers the side surface of the light emitting element 210. This does not exclude the existence of a light source 200 that does not have a light reflecting member 220 that covers the side surface of the light emitting element 210. In addition, the light reflecting member 220 may be arranged so as to cover a portion other than the side surface of the light emitting element 210. On the light emitting surface side of the light emitting device, which is the light emitting direction of the light source 200, other members such as a light transmissive member 500 and a lens may be provided.

[0024] (Light emitting element 210) The light emitting element 210 is preferably an LED. The light emitting element 210 includes a semiconductor laminate. The semiconductor laminate includes, for example, a support substrate, an n-type semiconductor layer arranged on the support substrate, a p-type semiconductor layer, and a light emitting layer sandwiched between the n-type semiconductor layer and the p-type semiconductor layer. When the light emitting element 210 is an LED, the light emitting element can be selected from among a light emitting element that emits blue light, a light emitting element that emits green light, and a light emitting element that emits red light, but may be a light emitting element that emits light of another color. As the support substrate of the light emitting element that emits blue light and the light emitting element that emits green light, a support substrate having light transmissivity such as sapphire or gallium nitride (hereinafter referred to as a light transmissive substrate) is often used. Also, as the support substrate of the light emitting element that emits red light, a support substrate having light shielding properties such as gallium arsenide or aluminum nitride (hereinafter referred to as a light shielding substrate) is often used. In this specification, a support substrate having light transmissivity means a support substrate having a transmittance of 60% or more at the peak wavelength of the light emitting element. In this specification, the light-shielding supporting substrate means a supporting substrate having a transmittance of 50% or less at the peak wavelength of the light-emitting element. Depending on the form of use, the light-emitting element emitting blue, green, or red light may have a light-transmitting substrate as appropriate.

[0025] The light source 200 of the first embodiment includes a first light emitting element 211, a second light emitting element 212, and a third light emitting element 213. The shapes of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 in the top view are not particularly limited. The shapes of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 in the top view of the first embodiment are substantially square. The first light emitting element 211 emits light of a first peak wavelength. The second light emitting element 212 emits light of a second peak wavelength that is longer than the first peak wavelength. The third light emitting element 213 emits light of a third peak wavelength that is longer than the first peak wavelength and shorter than the second peak wavelength. The first light emitting element 211 of the first embodiment emits blue light having a first peak wavelength of 455 nm or more and 485 nm or less. The second light emitting element 212 of the first embodiment emits red light having a second peak wavelength of 610 nm or more and 780 nm or less. The third light-emitting element 213 of the first embodiment emits green light having a third peak wavelength of 495 nm or more and 548 nm or less. The first light-emitting element 211 emits blue light, the second light-emitting element 212 emits red light, and the third light-emitting element 213 emits green light, so that full-color light can be emitted from the light-emitting device 101, and color reproducibility is likely to be improved. The multiple light-emitting elements 210 covered integrally by the light-reflecting member 220 are not limited to a combination that emits a specific color. It is sufficient that at least two light-emitting elements 210 are covered integrally by the light-reflecting member 220. The multiple light-emitting elements covered by the light-reflecting member 220 may emit the same color. The first light-emitting element 211 may emit green light, red light, or the like. The second light-emitting element 212 may emit blue light, green light, or the like. The third light-emitting element 213 may emit blue light, red light, or the like.

[0026] In this disclosure, the relationship between color names and chromaticity coordinates, the relationship between the wavelength range of light and the color names of monochromatic light, etc., conform to JIS Z8110. In this specification, 455 nm or more and 485 nm or less are defined as blue, 495 nm or more and 548 nm or less are defined as green, and 610 nm or more and 780 nm or less are defined as red.

[0027] In this specification, "blue", "green" and "red" mean that the light emitted by the light emitting element 210 is recognized as that light color by human vision. This means, for example, that the emission peak wavelength is in that light color gamut, but it may also contain wavelength components outside that light color gamut. In particular, the emission of phosphors has a broader spectral line width than that of semiconductor light emitting elements, and may contain many wavelength components.

[0028] (Light reflecting member 220) The light reflecting member 220 is a member that covers the side surface of the light emitting element 210. The light in the lateral direction emitted from the side surface of the light emitting element 210 is reflected by the light reflecting member 220, so that the light emitted from the light emitting element 210 can be easily extracted from the light emitting surface of the light emitting device. This makes it easier to improve the brightness of the light emitting device. In addition, the light reflecting member 220 makes it easier to reduce the absorption of the lateral light emitted from the side surface of the light emitting element 210 by the side wall 310 of the support 300. This makes it easier to improve the brightness of the light emitting device. At least a part of the upper surface of the light emitting element 210 is exposed from the light reflecting member 220. It is preferable that the entire upper surface of the light emitting element 210 is exposed from the light reflecting member 220. In this way, the light emitted from the light emitting element 210 can be easily extracted from the light emitting surface of the light emitting device. It is preferable to appropriately select the material, shape, material, color, etc. of the light reflecting member 220 so that the light emitted from the light emitting element 210 can be easily extracted from the light emitting surface of the light emitting device.

[0029] The light reflecting member 220 is, for example, a light reflecting resin that reflects light. The light reflecting resin includes a resin that serves as a base material and a light reflecting substance dispersed in the resin. As the base material, an epoxy resin, a silicone resin, an epoxy-modified silicone resin, a resin mixture of these, or a light-transmitting material such as glass can be used. From the viewpoints of light resistance and ease of molding, it is preferable to select a silicone resin as the base material.

[0030] Examples of the light-reflecting material that can be used include titanium oxide, silicon oxide, zirconium oxide, yttrium oxide, yttria-stabilized zirconia, potassium titanate, aluminum oxide, aluminum nitride, boron nitride, and mullite. In this embodiment, for example, titanium oxide is used. The concentration of the light-reflecting material in the light-reflecting member 220 is preferably 10% by weight or more and 80% by weight or less. The light-reflecting member 220 preferably contains titanium oxide as the light-reflecting material. The light-reflecting member 220 may also contain a glass filler or the like in order to reduce the expansion and contraction of the resin base material due to heat. The concentration of the glass filler is preferably more than 0% by weight and less than 40% by weight. The concentrations of the light-reflecting material, the glass filler, and the like are not limited to these.

[0031] The light reflecting member 220 may be any member that reflects light emitted from the light emitting element 210. The light reflecting member 220 is preferably formed from a material having a reflectance of 80% or more for the peak wavelength of the light emitting element 210. The light reflecting member 220 may be a member that blocks light emitted from the light emitting element 210. For example, the light reflecting member 220 may be a single layer or multilayer film made of metal, or a multilayer film (dielectric multilayer film) in which two or more types of dielectrics are laminated. For example, a DBR (distributed Bragg reflector) film may be used as the dielectric multilayer film. As an example, the base material may be a dimethyl silicone resin, the light reflective material may be titanium oxide, and the external color may be white. The amount of titanium oxide added to 100 parts of resin is preferably 20 or more and 100 or less.

[0032] Light-emitting elements that emit blue light and light-emitting elements that emit green light often have a light-transmitting substrate. A light-emitting element that has a light-transmitting substrate is more likely to emit light from the side surface of the light-emitting element than a light-emitting element that has a light-shielding substrate. Also, light-emitting elements that emit red light often have a light-shielding substrate. A light-emitting element that has a light-shielding substrate is more likely to emit light less easily from the side surface of the light-emitting element than a light-transmitting substrate.

[0033] In the case where the first light emitting element 211 emitting blue light is selected as the light emitting element 210 of the light source 200, if the first light emitting element 211 has a light-transmitting substrate, the first light emitting element 211 is likely to emit light from a side surface. It is particularly preferable that the side surface of the first light emitting element 211 emitting blue light is covered with the light reflecting member 220. In this way, the light emitted in the lateral direction from the side surface of the first light emitting element 211 is reflected by the light reflecting member 220, and the light emitted from the first light emitting element 211 is likely to be extracted from the light emitting surface of the light emitting device. This makes it easier to improve the brightness of the light emitting device 101.

[0034] In the case where the third light emitting element 213 emitting green light is selected as the light emitting element 210 of the light source 200, if the third light emitting element 213 has a light-transmitting substrate, the third light emitting element 213 is likely to emit light from the side surface. It is particularly preferable that the side surface of the third light emitting element 213 emitting green light is covered with the light reflecting member 220. In this way, the light in the lateral direction emitted from the side surface of the third light emitting element 213 is reflected by the light reflecting member 220, and the light emitted from the third light emitting element 213 is likely to be extracted from the light emitting surface of the light emitting device. This makes it easier to improve the brightness of the light emitting device 101.

[0035] In the case where the second light emitting element 212 emitting red light is selected as the light emitting element 210 of the light source 200, if the second light emitting element 212 has a light blocking substrate, the second light emitting element 212 is less likely to emit light from the side surface. For this reason, the side surface of the second light emitting element 212 emitting red light does not need to be covered with the light reflecting member 220. The side surface of the second light emitting element 212 emitting red light may be covered with the light reflecting member 220. In this way, the light in the lateral direction emitted from the side surface of the second light emitting element 212 is reflected by the light reflecting member 220, so that the light emitted from the second light emitting element 212 is more likely to be extracted from the light emitting surface of the light emitting device. This makes it easier to improve the brightness of the light emitting device 101.

[0036] In addition, when the first light-emitting element 211 emitting blue light and the third light-emitting element 213 emitting green light do not have a light-transmitting substrate, the light reflecting member 220 may cover the side surface of the first light-emitting element 211 and / or the third light-emitting element 213, or may not cover the side surface of the first light-emitting element 211 and / or the third light-emitting element 213. In addition, when the second light-emitting element 212 emitting red light has a light-transmitting substrate, the light reflecting member 220 may cover the side surface of the second light-emitting element 212, or may not cover the side surface of the second light-emitting element 212. In any case, it can be easily understood by a person skilled in the art that the light reflecting member 220 covers the side surface of the light-emitting element 210 from which light is likely to be emitted in the side direction of the light-emitting element, making it easier to extract the light emitted from the light-emitting element 210 from the light-emitting surface of the light-emitting device, and therefore, a light-transmitting substrate or a light reflecting member 220 may be provided as appropriate.

[0037] Here, in the present invention, "covering the side surface of the light-emitting element 210" refers to arranging the light-reflecting member 220 near the side surface of the light-emitting element 210 to an extent that the object of the present invention of improving the brightness can be achieved. The light-reflecting member 220 may be arranged so as to cover the entire side surface of the light-emitting element 210, but it is sufficient that the light-reflecting member 220 is arranged so as to cover at least a part of the side surface of the light-emitting element 210. Furthermore, although the light-reflecting member 220 in the first embodiment is in contact with the light-emitting element 210, the light-reflecting member 220 may be separated from the light-emitting element 210. It is sufficient that the light-reflecting member 220 is appropriately arranged at a necessary location of the light-emitting element 210 to an extent that the required brightness can be obtained.

[0038] 2b shows a schematic cross-sectional view of the light source 200 taken along line IIB-IIB in FIG. 1. In the cross-sectional view, the first length W1 in the horizontal direction of the light reflecting member 220 of the portion covering the side surface of the first light emitting element 211 located on the opposite side of the side surface of the first light emitting element 211 facing the side surface of the third light emitting element 213 is preferably 25 μm or more and 100 μm or less. When the first length W1 is 25 μm or more, the light emitted from the side surface of the first light emitting element 210B is easily reflected by the light reflecting member 220. When the first length W1 is 100 μm or less, the light source 200 is easily miniaturized in the X direction (horizontal direction).

[0039] In a cross-sectional view, the second length W2 in the lateral direction of the light reflecting member 220 of the portion located between the opposing side surface of the first light emitting element 211 and the side surface of the third light emitting element 213 is preferably 25 μm or more and 100 μm or less. When the second length W2 is 25 μm or more, the light emitted from the side surface of the first light emitting element 211 and the side surface of the third light emitting element 213 is easily reflected by the light reflecting member 220. When the second length W2 is 100 μm or less, the light source 200 can be easily miniaturized in the X direction (lateral direction).

[0040] In a cross-sectional view, the third length W3 in the lateral direction of the light reflecting member 220 of the portion located between the opposing side surface of the second light emitting element 212 and the side surface of the third light emitting element 213 is preferably 25 μm or more and 100 μm or less. When the third length W3 is 25 μm or more, the light emitted from the side surface of the second light emitting element 212 and the side surface of the third light emitting element 213 is easily reflected by the light reflecting member 220. When the second length W2 is 100 μm or less, the light source 200 can be easily miniaturized in the lateral direction.

[0041] In a cross-sectional view, a fourth length W4 in the horizontal direction of the light reflecting member 220 of a portion covering a side surface of the second light emitting element 212 located on the opposite side of the side surface of the second light emitting element 212 facing the side surface of the third light emitting element 213 is preferably 25 μm or more and 100 μm or less. When the fourth length W4 is 25 μm or more, the light emitted from the side surface of the second light emitting element 212 is easily reflected by the light reflecting member 220. When the fourth length W4 is 100 μm or less, the light source 200 is easily miniaturized in the X direction (horizontal direction).

[0042] In a cross-sectional view, the fifth length W5, which is the maximum length of the light reflecting member 220 in the X direction (horizontal direction), is preferably 300 μm or more and 50000 μm or less. When the fifth length W5 is 300 μm or more, the light emitted from the side surface of the first light emitting element 211, the second light emitting element 212, and / or the third light emitting element 213 is easily reflected by the light reflecting member 220. When the fifth length W5 is 50000 μm or less, the light emitting device 101 can be easily miniaturized in the X direction (horizontal direction).

[0043] When the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 are separately mounted on the support 300, it is necessary to provide an interval of about 100 μm between adjacent light emitting elements 210 in order to avoid contact of the adhesive member 720 that bonds the first light emitting element 211, the second light emitting element 212, and / or the third light emitting element 213. However, since the light source 200 of the first embodiment includes the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 via the light reflecting member 220, the interval between adjacent light emitting elements 210 can be narrowed to about 50 μm or less. The interval between the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 may be about 5 μm. By closely arranging the intervals between the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 having different peak wavelengths, the color mixing property of the light emitting device 101 is easily improved.

[0044] The light reflecting member 220 of the first embodiment covers the lower surface of the light emitting element 210. In this way, the light emitted from the lower surface of the light emitting element 210 is reflected by the light reflecting member 220, and the light emitted from the light emitting element 210 is easily extracted from the light emitting surface of the light emitting device. This makes it easier to improve the brightness of the light emitting device. In addition, the light reflecting member 220 makes it easier to reduce the absorption of the light emitted from the lower surface of the light emitting element 210 by the support 300. This makes it easier to improve the brightness of the light emitting device. In addition, the light reflecting member 220 covers the lower surface of the light emitting element 210, and therefore makes it easier to improve the reliability of the light emitting device 101. For example, even if moisture infiltrates from a gap between the translucent member 500 and the side wall 310 described later, the light reflecting member 220 covers the lower surface of the light emitting element 210, and therefore makes it easier to lengthen the path of moisture infiltration from the point where the moisture infiltrates to the light emitting element 210. This reduces contact between the moisture and the light emitting element, and therefore makes it easier to improve the reliability of the light emitting device 101.

[0045] As shown in Fig. 2b, the thickness H5 of the second light emitting element 212 is thicker than the thickness H4 of the first light emitting element 211. Furthermore, the thickness H2 of the light reflecting member located below the first light emitting element 211 is thicker than the thickness H3 of the light reflecting member 220 located below the second light emitting element 212. In this way, the first light emitting element 211 can be brought closer to the light emitting surface of the light emitting device 101. This makes it easier to improve the brightness of the light emitting device 101. In this specification, the thickness of each member means the maximum length of each member in the Z direction (vertical direction).

[0046] The thickness H2 of the light reflecting member at the portion located below the first light emitting element 211 is not particularly limited, but is preferably 30 μm or more and 1000 μm or less. When the thickness H2 of the light reflecting member at the portion located below the first light emitting element 211 is 30 μm or more, it becomes easier to reduce absorption of light emitted from the lower surface of the first light emitting element 211 by the support 300. When the thickness H2 of the light reflecting member at the portion located below the first light emitting element 211 is 1000 μm or less, it becomes easier to miniaturize the light source 200 in the vertical direction.

[0047] As shown in FIG. 2b, the thickness H4 of the third light emitting element 213 is thinner than the thickness H5 of the second light emitting element 212. Also, the thickness H2 of the light reflecting member located on the lower side of the third light emitting element 213 is thicker than the thickness H3 of the light reflecting member 220 located on the lower side of the second light emitting element 212. In this way, the third light emitting element 213 can be brought closer to the light emitting surface of the light emitting device 101. This makes it easier to improve the brightness of the light emitting device 101. The thickness of the light reflecting member located on the lower side of the first light emitting element 211 and the thickness of the light reflecting member located on the lower side of the third light emitting element 213 may be the same or different.

[0048] It is preferable that the upper surface of the first light emitting element 211, the upper surface of the second light emitting element 212, and the upper surface of the third light emitting element 213 are located on the same plane. This makes it easier to design an optical member such as a lens when the optical member is disposed above the light source 200. In this specification, the term "on the same plane" means that the difference between the surfaces in the vertical direction is allowed to vary within ±15 μm. 2b, by covering the lower surface of the light emitting element 210 with the light reflecting member 220, the length H1 from the light emitting surface of the light emitting element to the mounting surface can be increased. Since the light emitting surface of the light emitting element can be easily brought closer to the light emitting surface of the light emitting device 101, the luminance of the light emitting device 101 can be easily improved.

[0049] (Translucent member 500) The light-transmitting member 500 is a member that covers at least a part or the entire upper surface of the light source 200. The light-transmitting member 500 can add optical functions and protect the upper surface of the light source 200 from external forces and moisture. In the first embodiment, the upper surface of the light-transmitting member 500 is the light-emitting surface of the light-emitting device 101. The light-transmitting member 500 has a transmittance of 60% or more at the peak wavelength of the light-emitting element 210. It is preferable that the light-transmitting member 500 has a transmittance of 90% or more at the peak wavelength of the light-emitting element 210.

[0050] Taking into consideration the relaxation of stress on the wire, the refractive index of light, etc., the light-transmitting member 500 can be selected from materials commonly used in the relevant field, such as one or more of polyolefin resins, polycarbonate resins, polystyrene resins, epoxy resins, acrylic resins, acrylate resins, methacrylic resins (PMMA, etc.), urethane resins, polyimide resins, polynorbornene resins, fluororesins, silicone resins, modified silicone resins, modified epoxy resins, glass epoxy resins, etc., liquid crystal polymers, glass, etc., and among these, it is preferable to use epoxy resins, silicone resins, etc.

[0051] The light-transmitting member 500 can be formed from a resin material containing a wavelength conversion substance. The wavelength conversion substance includes a wavelength conversion substance such as a phosphor or quantum dots that converts the wavelength of light emitted from the light-emitting element into light of a different wavelength.

[0052] The phosphor may be, for example, an yttrium-aluminum-garnet phosphor (e.g., (Y,Gd)3(Al,Ga)5O 12 :Ce), lutetium aluminum garnet phosphors (e.g., Lu3(Al,Ga)5O 12 :Ce), terbium aluminum garnet phosphors (e.g., Tb3(Al,Ga)5O 12 :Ce), CCA phosphors (e.g., Ca 10 (PO4)6Cl2:Eu), SAE phosphors (e.g., Sr4Al 14 O 25 :Eu), chlorosilicate phosphors (e.g., Ca8MgSi4O 16 Cl2:Eu), silicate phosphors (e.g., (Ba,Sr,Ca,Mg)2SiO4:Eu), β-sialon phosphors (e.g., (Si,Al)3(O,N)4:Eu) or α-sialon phosphors (e.g., Ca(Si,Al) 12 (O,N) 16 :Eu) and other oxynitride phosphors, LSN 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), etc., 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 x satisfies 0 < x < 1), or fluoride-based phosphors such as MGF-based phosphors (e.g., 3.5MgO·0.5MgF2·GeO2:Mn), quantum dots having a perovskite structure (e.g., (Cs,FA,MA)(Pb,Sn)(F,Cl,Br,I)3 where 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.

[0053] The light-transmissive member 500 can be a single layer or a plurality of layers of a layer containing a wavelength-converting substance. One light-transmissive member 500 may contain one or more types of phosphors. The plurality of types of phosphors may be used mixed or may be used by laminating separate layers. Also, a laminated structure of a layer containing a wavelength-converting substance and a layer substantially not containing a wavelength-converting substance may be employed.

[0054] The light-transmissive member 500 may contain a light-diffusing substance. Examples of the light-diffusing substance include fillers such as titanium oxide, barium titanate, aluminum oxide, silicon oxide, zirconium oxide, aerosil, glass, glass fiber, or wollastonite, aluminum nitride, etc., those commonly used in the art. The light-transmissive member 500 can be formed, for example, by injection molding, potting molding, resin printing method, transfer molding method, compression molding, etc.

[0055] The shape of the light-transmitting member 500 can be selected from a plate-like shape and a lens-like shape. The lens is, for example, a convex lens, and the optical axis of the lens may be aligned with the center of the light-emitting surface. The lens may also be a cylindrical lens. When the light source has a plurality of light-emitting elements, a lens may be provided for each light-emitting element, or one lens may be provided for the plurality of light-emitting elements. Furthermore, when the light source has a plurality of light-emitting elements, a convex lens and a cylindrical lens may be used in combination. In this embodiment, by providing the light-transmitting member 500 on the upper part of the light-emitting element, an effect of further improving the brightness is achieved. The light-transmitting member 500 can also function as a sealing member.

[0056] (Light absorbing member 440) The light emitting device 101 preferably includes a dark-colored light absorbing member 440 that covers the side surface of the light source 200 and the mounting surface 320 of the support 300. By including the light absorbing member 440 in the light emitting device 101, it becomes easier to reduce reflection of external light such as sunlight and room light by the light source 200 and / or the support 300. This makes it easier to reduce a decrease in the contrast ratio between when the light emitting device 101 is turned on and when it is turned off, which is caused by reflection of external light.

[0057] 2a illustrates an example in which light absorbing member 440 covers the side surface of light source 200 and mounting surface 320 of support 300. Light absorbing member 440 may be configured to cover only a portion of the side surface of light source 200, or to cover only a portion of mounting surface 320 of support 300.

[0058] The light absorbing member 440 has a colorant added to a resin material that serves as a base material. The base material of the light absorbing member 440 may be the same material as the base material of the support member. The colorant of the light absorbing member 440 may be the same material as the colorant of the support member. A dark-colored light absorbing member 440 can be formed by using dark-colored particles such as carbon as the colorant.

[0059] In the first embodiment, the light source 200 has the light reflecting member 220 covering the side surface of the light emitting element 210, and also has the light absorbing member 440 covering the side surface of the light source 200, thereby achieving a special effect. That is, the light emitted from the side surface of the light emitting element 210 is blocked by the light reflecting member 220, which makes it easier to reduce the light absorbed by the light absorbing member 440. By providing two members having opposing functions, a synergistic effect can be achieved in which the luminance of the light emitting device is improved and further the contrast ratio is improved by providing the light absorbing member 440.

[0060] 1, the third light-emitting element 213 emitting green light is located between the first light-emitting element 211 emitting blue light and the second light-emitting element 212 emitting red light. By arranging the first light-emitting element 211, the second light-emitting element 212, and the third light-emitting element 213 in this manner, an effect of increasing the color mixing ability of the light-emitting device 101 is achieved.

[0061] A description will now be given of one embodiment of a method for manufacturing the light source of embodiment 1. The light source of embodiment 1 can be manufactured by the following steps. First step: A plurality of light emitting elements 210 equipped with electrodes are arranged on a sheet, with the electrodes of the light emitting elements 210 facing the sheet side. Second step: A resin containing a light-reflecting material that will become the light-reflecting member 220 is applied so as to cover the upper and side surfaces of the multiple light-emitting elements 210. Note that in the second step, the upper surface of the light-emitting element refers to the surface of the light-emitting element that is located opposite to the surface provided with the electrodes. Third step: The light source can be manufactured by cutting the resin containing the light reflective material that will become the light reflecting member 220 according to the number of light emitting elements of the light source. It should be noted that those skilled in the art can easily understand that the manufacturing method can also be carried out using other steps. A Zener diode may be provided as a protective member for the light emitting element 210. When providing a Zener diode, the Zener diode may be disposed on the sheet before the first process, or the Zener diode may be disposed on the sheet after the first process.

[0062] [Embodiment 2] Fig. 4 shows the second embodiment. Fig. 4 is a schematic top view of the second embodiment. In the light emitting device 102 of the second embodiment, the light source 200 and the plurality of light emitting elements 210 each have a substantially rectangular shape when viewed from above, and the side surfaces of the plurality of light emitting elements 210 are integrally covered by a light reflecting member 220 .

[0063] The shape of the first light emitting element 211 of the second embodiment in top view is a rectangle defined by a pair of first long sides extending in a first direction (Y direction) and a pair of first short sides extending in a second direction (X direction) perpendicular to the first direction. The shape of the second light emitting element 212 in top view is a rectangle defined by a pair of second long sides extending in the first direction (Y direction) and a pair of second short sides extending in the second direction (X direction). The shape of the third light emitting element 213 in top view has a rectangular shape defined by a pair of third long sides extending in the first direction (Y direction) and a pair of third short sides extending in the second direction (X direction).

[0064] When viewed from above, the first short side of the first light-emitting element 211 and the second short side of the second light-emitting element 212 extend in the second direction (X direction), making it easier to make the light source smaller in the second direction than when the first long side of the first light-emitting element 211 and the second long side of the second light-emitting element 212 extend in the second direction (X direction).

[0065] In top view, it is preferable that the first long side of the first light emitting element 211 and the third long side of the third light emitting element 213 face each other in the second direction (X direction). In this way, it is easier to miniaturize the light source in the second direction (X direction) than when the first short side of the first light emitting element 211 and the third short side of the third light emitting element 213 face each other in the second direction (X direction) in top view. In addition, the first long side that is longer than the first short side is more likely to emit light from the first light emitting element. Similarly, the third long side that is longer than the third short side is more likely to emit light from the third light emitting element. Therefore, by opposing the first long side from which light from the first light emitting element is more likely to be emitted and the third long side from which light from the third light emitting element is more likely to be emitted, the light from the first light emitting element and the light from the third light emitting element are more likely to mix. This makes it easier to improve the color mixing performance of the light emitting device. Similarly, in top view, it is preferable that the second long side of the second light emitting element 212 and the third long side of the third light emitting element 213 face each other in the second direction (X direction).

[0066] [Embodiment 3] A third embodiment is shown in Fig. 5 and Fig. 6. Fig. 6 is a schematic cross-sectional view taken along line VI-VI in Fig. 5. The light emitting device 103 of the third embodiment includes a plurality of light sources 200, including a first light source 201, a second light source 202, and a third light source 203. The first light source 201 includes a first light emitting element 211 and a light reflecting member 220 covering the side and bottom of the first light emitting element 211. The light reflecting member 220 of the first light source 201 may be referred to as a first light reflecting member. The second light source 202 includes a second light emitting element 212. The third light source 203 includes a third light emitting element 213 and a light reflecting member 220 covering the side and bottom of the third light emitting element 213. The light reflecting member 220 of the third light source 203 may be referred to as a second light reflecting member. The light emitting device 103 includes a translucent member 500 having a first convex portion 515 located above the first light emitting element 211 and a second convex portion 525 located above the second light emitting element 212. The height (HB) of the first convex portion 515 is higher than the height (HR) of the second convex portion 525. The light-transmitting member 500 further includes a third convex portion 535 located on the upper side of the third light-emitting element 213, and the height (HG) of the third convex portion 535 is lower than the height (HB) of the first convex portion 515 and higher than the height (HR) of the second convex portion 525. In this specification, the first convex portion 515, the second convex portion 525, and / or the third convex portion 535 may be referred to as a light-transmitting convex portion 505. A lens may be adopted as the light-transmitting convex portion 505. As the type of lens, a convex lens or a cylindrical lens may be selected. The heights of the first convex portion 515, the second convex portion 525, and / or the third convex portion 535 are not limited to the example of the third embodiment and can be changed as appropriate.

[0067] As shown in FIG. 6, the thickness of the first light reflecting member at the portion located below the first light emitting element 211 is preferably thicker than the thickness of the second light reflecting member at the portion located below the third light emitting element 213. In this way, the distance from the top of the first convex portion 515 to the light emitting surface of the first light emitting element 211 in the Z direction (vertical direction) can be shortened. This makes it easier to extract light from the first light emitting element 211 from the first convex portion 515. It is preferable that the height of the upper surface of the first light emitting element 211 is higher than the height of the upper surface of the third light emitting element 213, and the height of the upper surface of the third light emitting element 213 is higher than the height of the upper surface of the second light emitting element 212. In this way, the height of the upper surface of the light emitting element 210 located below the light emitting element 210 can be increased in order of the height of the light-transmitting convex portion 505. This makes it easier to extract light from the first light-emitting element 211 through the first convex portion 515, easier to extract light from the second light-emitting element 212 through the second convex portion 525, and easier to extract light from the third light-emitting element 213 through the third convex portion 535.

[0068] 6, it is preferable that light absorbing member 440 contacts the side surfaces of first light source 201, second light source 202, and third light source 203. This makes it easier to reduce a decrease in the contrast ratio between when light emitting device 103 is turned on and when it is turned off, which is caused by reflection of external light.

[0069] The light-transmitting member 500 has a light-transmitting convex portion 505 and a transparency maintaining portion 507 that maintains the light-transmitting convex portion 505. In the light-transmitting member 500 of the third embodiment, the light-transmitting convex portion 505 and the transparency maintaining portion 507 are integrally formed. The light-transmitting convex portion 505 and the transparency maintaining portion 507 may be formed separately, and the light-transmitting convex portion 505 and the transparency maintaining portion 507 may be integrated by any processing method to form the light-transmitting member 500. The materials of the first convex portion 515, the second convex portion 525, the third convex portion 535 and / or the transparency maintaining portion 507 may be the same or different from each other. The transparent convex portion 505 is fixed to the support 300 by the transparent maintaining portion 507 .

[0070] FIG. 18 shows an outdoor use of the light emitting device 103 of the third embodiment. When the light emitting device 103 of the third embodiment is used in a display device such as an outdoor display, the first convex portion 515, the second convex portion 525, and the third convex portion 535 are arranged along the vertical direction of the display surface (surface from which light is emitted) of the display device. When such a display surface is viewed from below, it is preferable that the first convex portion 515 is located above the second convex portion 525 as shown in FIG. 18. This makes it easier to reduce the blocking of the light emitted from the first convex portion 515 toward the observer 540 located below by the second convex portion 525. This makes it easier to more efficiently emit the light directed downward from the first convex portion 515 toward the observer 540.

[0071] 18, it is preferable that the light-transmitting convex portions 505 are arranged so that their height increases toward the top. In other words, it is preferable that the second convex portions 525, the third convex portions 535, and the first convex portions 515 are arranged in this order toward the top. In this way, it becomes easier to more efficiently emit the light directed downward from each of the first convex portions 515, the second convex portions 525, and the third convex portions 535 toward the viewer 540 side.

[0072] 18, it is preferable to provide a canopy 460 above the light emitting device 103. For example, when the light emitting device 103 is installed outdoors, components that deteriorate the light emitting device 103, such as ultraviolet rays D3, may be present. Therefore, by providing the canopy 460 above the light emitting device 103, it becomes easier to reduce irradiation of the light emitting device 103 with harmful light.

[0073] Suitable materials for the eaves 460 include, for example, polycarbonate resin, ABS resin, epoxy resin, phenolic resin, aluminum, copper, and alloys containing desired amounts of other metals such as Mg, Si, Fe, Cu, Mn, Cr, Zn, Ni, Ti, Pb, and Sn in these metals. In particular, glass fiber-reinforced polycarbonate resin is preferable because it is relatively easy to form weather-resistant eaves. In addition, the eaves themselves may be colored black or other dark colors by adding a coloring agent. The mechanical strength may be further improved by adding glass fiber to the eaves. In addition, a paint that improves hydrophilicity may be applied to the surface of the eaves. Similarly, the contrast ratio can be improved by applying a black paint to the metal surface of an eaves made of a metal material. However, on a relatively smooth metal surface, even if the applied paint surface itself is dark-colored, the paint may not be able to absorb all the external light, resulting in total reflection and a decrease in the contrast ratio. Therefore, the decrease in contrast ratio can be more significantly reduced by applying a coloring agent containing a matting agent containing fine particles to the metal bars themselves or to the surfaces of the bars. Such a matting agent can also be applied to the eaves and the housing.

[0074] Furthermore, the eaves can have fine irregularities formed on the surface thereof. Such fine irregularities can suppress the decrease in contrast ratio caused by the direct reflection of external light toward the viewer, and can also improve hydrophilicity (reduce the surface tension against rainwater). For example, the irregularities can be formed by sandblasting the surface of the eaves or by applying paint containing fine particles to the surface of the eaves. Also, the eaves can have irregularities by using porous ceramics or the like as the material for the eaves. According to JIS B0601, such irregularities preferably have an arithmetic mean roughness (Ra) of 1 μm or more and 50 μm or less, more preferably 2 μm or more and 10 μm or less, under the conditions of a cutoff value (λc) of the roughness curve of 0.8 mm and a reference length of the roughness curve of 2.40 mm. Also, the ten-point mean roughness (Rz) is preferably in the range of 5 μm or more and 100 μm or less, more preferably 10 μm or more and 50 μm or less. Therefore, such fine irregularities are clearly different from a smooth surface that has not been treated to have irregularities.

[0075] It is preferable that the canopy 460 provided on the upper side of the light emitting device 103 is inclined in a direction toward the observer 540. This makes it easier to reduce the blocking of light from the light emitting device 103 by the canopy 460 when viewed from the observer. Since the light emitting device 103 used outdoors is often higher than the line of sight of the observer, it is preferable that the angle (θ2) of the surface 460a of the canopy 460 is larger than 90 degrees with respect to the vertical direction D2. If the angle (θ2) of the surface 460a of the canopy 460 is larger than 90 degrees with respect to the vertical direction D2, it is easier to reduce the accumulation of rainwater and dust on the light emitting device 103 by flowing down the surface 460a of the canopy 460 when the light emitting device 103 is installed outdoors.

[0076] Since light emitting devices used outdoors are often higher than people's line of sight, it is preferable that the light emitting surface side of the light emitting device is inclined toward the observer 540 so that the irradiation direction D1 of the light emitting device 103 is in an oblique direction (a direction oblique by θ1 from the vertical direction D2). In this way, it becomes easier to more efficiently emit the light emitted from the light emitting device toward the observer 540.

[0077] When the light emitting device 103 has a plurality of light emitting elements 210, it is preferable that the light emitting element with the shortest peak wavelength is located closer to the eaves 460. In the third embodiment, the first light emitting element 211 emits blue light, the second light emitting element 212 emits red light, and the third light emitting element 213 emits green light. For this reason, it is preferable that the first light emitting element 211 is located closer to the eaves 460 than the second light emitting element 212 and the third light emitting element 213. In this way, it is easier to improve the reliability of the light emitting device 103. In general, light with a short wavelength is more likely to deteriorate the translucent member 500 and the like than light with a long wavelength. For this reason, the first convex portion 515 located on the upper side of the first light emitting element 211 is more likely to be deteriorated by the light from the first light emitting element 211 than the second convex portion 525 and the third convex portion 535. Furthermore, since the first light emitting element 211 is located closer to the eaves 460 than the second light emitting element 212 and the third light emitting element 213, the first convex portion 515 located on the upper side of the first light emitting element 211 is less susceptible to deterioration by external light such as ultraviolet light than the second convex portion 525 and the third convex portion 535. This makes it possible to improve the reliability of the light transmitting convex portion that is easily deteriorated by the light of the light emitting element 210, and therefore makes it easier to improve the reliability of the light emitting device 103.

[0078] The mounting substrate 480 on which the light emitting device 103 is mounted preferably has a hole 470. By providing the hole 470 in the mounting substrate 480, rainwater and dust can be discharged from the hole 470. In addition, the hole 470 in the mounting substrate 480 allows air to flow easily, so that heat from the light emitting device 103 and the mounting substrate 480 can be easily released. The size of the hole is not particularly limited, but may be a size that allows rainwater and dust to easily pass through. In order to discharge rainwater, it is preferable to select a material through which water flows easily as a member of the mounting substrate 480, or to perform a water-slip treatment.

[0079] 7, 8, and 9 show modified examples of the third embodiment. FIG. 8 shows a schematic cross-sectional view of the light emitting device taken along line VIII-VIII in FIG. 7. FIG. 9 shows a schematic cross-sectional view of the light emitting device taken along line IX-IX in FIG. 7. The light emitting device 103 includes a plurality of light sources 200, including a first light source 201, a second light source 202, and a third light source 203. The first light source 201 includes a first light emitting element 211 and a light reflecting member 220 that covers the side surface of the first light emitting element 211. At least a part of the upper surface and at least a part of the lower surface of the first light emitting element 211 are exposed from the light reflecting member 220. The second light source 202 includes a second light emitting element 212. The third light source 203 includes a third light emitting element 213 and a light reflecting member 220 that covers the side surface of the third light emitting element 213. At least a part of the upper surface and at least a part of the lower surface of the third light emitting element 213 are exposed from the light reflecting member 220. The light emitting device 103 includes a first convex portion 515 located above the first light emitting element 211, a second convex portion 525 located above the second light emitting element 212, a third convex portion 535 located above the third light emitting element 213, and a light-transmitting member 500. As shown in Fig. 8, the heights of the first convex portion 515, the second convex portion 525, and the third convex portion 535 may be substantially the same. Note that the light-transmitting member 500 does not necessarily have to have a light-transmitting convex portion located above the light emitting element 210.

[0080] [Embodiment 4] The fourth embodiment is shown in Fig. 10 and Fig. 11. Fig. 10 is a schematic top view of the light emitting device according to the fourth embodiment. Fig. 11 is a schematic cross-sectional view of the light emitting device taken along the line XI-XI in Fig. 10. As shown in Fig. 10, the first light emitting element 211 and the second light emitting element 212 are positioned side by side in the first direction (Y direction). In the second direction (X direction), the third light emitting element 213 overlaps with the first light emitting element 211 and the second light emitting element 212. This makes it easier for the lights emitted from the first light emitting element 211, the second light emitting element 212, and / or the third light emitting element 213 to mix, improving the color mixing ability of the light emitting device 104.

[0081] The light emitting device 104 includes a light absorbing member 440 that covers the side surface of the light source 200. In addition, one light transmitting convex portion 505 of the light transmitting member is located above the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213. This makes it easier for the light emitted from the first light emitting element 211, the second light emitting element 212, and / or the third light emitting element 213 to mix in the light transmitting convex portion 505, improving the color mixing performance of the light emitting device 104. Note that, although the light absorbing member 440 and the light transmitting member 500 are included in the fourth embodiment, they are not necessarily required members.

[0082] [Embodiment 5] The fifth embodiment is shown in Figs. 12, 13, and 14. Fig. 12 is a schematic top view of the light emitting device according to the fifth embodiment. Fig. 13 is a schematic cross-sectional view of the light emitting device taken along line XIII-XIII in Fig. 12. As shown in Fig. 13, the light emitting device 105 of the fifth embodiment includes a plurality of light sources 200, including a first light source 200D and a second light source 200E. The first light source 200D includes a first light emitting element 211, a second light emitting element 212, and a light reflecting member 220 that covers the side surfaces of the first light emitting element 211 and the second light emitting element 212. The second light source 200E includes a third light emitting element 213, and a light reflecting member 220 that covers the side surfaces of the third light emitting element 213. The light emitting device 105 includes a translucent member 500 that includes a first convex portion 515 located on the upper side of the first light source 200D and a second convex portion 525 located on the upper side of the second light source 200E. In the fifth embodiment, the first light emitting element 211 emits blue light, the second light emitting element 212 emits red light, and the third light emitting element 213 emits green light.

[0083] To obtain white light from the light emitting device 105, for example, the luminance of the first light emitting element 211 emitting blue light may be 1, the luminance of the second light emitting element 212 emitting red light may be approximately 3, and the luminance of the third light emitting element 213 emitting green light may be approximately 7.

[0084] It can be said that the power consumed by the light-emitting element is proportional to the luminance. Thus, when white light is emitted from the light-emitting device 105, the power consumed by the third light-emitting element 213 emitting green light is higher than the power consumed by the first light-emitting element 211 emitting blue light. Therefore, the third light-emitting element 213 emitting green light may generate more heat than the first light-emitting element 211 emitting blue light depending on the power consumption.

[0085] In the fifth embodiment, the second light source having the third light emitting element 213 emitting green light and the first light source having the first light emitting element 211 and the second light emitting element 212 are located apart from each other. This makes it easier to prevent the third light emitting element 213 emitting green light, which is prone to become hot, from becoming even hotter due to the heat conducted from the first light source. This makes it easier to prevent the third light emitting element 213 from deteriorating.

[0086] The first convex portion 515 shown in FIG. 12 is rectangular in top view. Also, the cross-sectional view is convex as shown in FIG. 13. The first convex portion 515 is located on the upper side of the first light source 200D. The first convex portion 515 of the fifth embodiment is a cylindrical lens. By positioning the first convex portion 515 on the upper side of the first light emitting element 211 and the second light emitting element 212, the color mixing of the light from the first light emitting element 211 and the second light emitting element 212 is easily improved. Also, by positioning the first convex portion 515, which is a cylindrical lens, on the upper side of the first light emitting element 211 and the second light emitting element 212, the light from the first light emitting element 211 and the second light emitting element 212 is easily spread in the Y direction. The second convex portion 525 is substantially egg-shaped in top view. The cross-sectional view is convex as shown in FIG. 13. The second convex portion 525 is located on the upper side of the second light source 200E. By positioning the first convex portion 515 and the second convex portion 525 apart, it becomes easier to reduce the transfer of heat generated from the second light source 200E to the first convex portion 515. This makes it easier to reduce deterioration of the first convex portion 515 due to heat. Similarly, by positioning the first convex portion 515 and the second convex portion 525 apart, it becomes easier to reduce the transfer of heat from the first light source 200D to the second convex portion 525.

[0087] A modified example of the fifth embodiment is shown in Fig. 14. In the modified example of the embodiment in Fig. 14, the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 are arranged to be aligned in the second direction (X direction). This makes it possible to increase the distance between the third light emitting element 213 that emits green light and the first light emitting element 211 that emits blue light. This makes the first light emitting element 211 that emits blue light less susceptible to the effect of heat from the third light emitting element 213 that emits green light.

[0088] [Embodiment 6] The sixth embodiment is shown in Figs. 15, 16, and 17. In the display device 800 shown in Fig. 15, a plurality of light emitting devices 510 are arranged in a matrix. The plurality of light emitting devices 510 are arranged to form rows in the second direction (X direction) and columns in the first direction (Y direction). The light emitting devices 101, 103, 104, and 105 according to the present disclosure can be used for the light emitting device 510. In the light emitting device 510, the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 are arranged in the second direction (X direction). Although two rows and two columns are shown in Fig. 15, in actual use, the arrangement will be in a matrix form several thousand to several hundred thousand times, and the number and size may be appropriately determined according to the purpose of use. A part of the support 300 or a canopy 460 is arranged on the +Y direction side and the -Y direction side of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213.

[0089] FIG. 17 shows how the light emitting device 510 looks when an observer observes the light emitting device 510 from the -Z direction side. As shown in FIG. 16, one of two arrows 520 showing the view from the observer is blocked by the canopy 460. Therefore, as shown in FIG. 17, there is a risk of a light-shielded area 530 occurring on the -Z direction side of the light emitting device 510, where a part of the light emitting element 210 is not visible. In the light emitting device 510 of the display device 800, even if a light-shielded area 530 occurs due to a part of the support 300 or the canopy 460, the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 are aligned in the second direction (X direction), so that it is easy to reduce the possibility that one of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 becomes completely invisible. Since the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 are aligned in the second direction (X direction), any one of the light emitting elements 210 is not positioned closer to the -Y direction than the other light emitting elements 210. This makes it easier to reduce the occurrence of the light emitting element 210 located on the −Y direction side of the light emitting device 510 becoming completely invisible.

[0090] [Modifications of the light source 200] The following describes modified examples of the light source 200. It is clear that the modified examples can be appropriately adopted in the above-mentioned light emitting device. Fig. 19 shows a modified example of the light source 200 of the first embodiment. The light source shown in Fig. 19a shows an example in which the lateral length of the light reflecting member 220 covering the side surfaces of the first light emitting element 211 and the second light emitting element 212 is longer on the upper surface side of the first light emitting element 211 and the second light emitting element 212 than on the lower surface side. This has the effect of making it easier for the light reflecting member 220 to reflect light emitted from the side surfaces of the first light emitting element and the second light emitting element near the light emitting surface of the light emitting device toward the light emitting surface side of the light emitting device.

[0091] 19b shows an example in which the lateral length of the light reflecting member 220 covering the side surfaces of the first light emitting element 211 and the second light emitting element 212 is longer on the lower surface side of the first light emitting element 211 and the second light emitting element 212 than on the upper surface side. This makes it possible to increase the lateral length of the light reflecting member 220 on the lower surface side of the first light emitting element 211 and the second light emitting element 212, thereby achieving the effect of making it easier to firmly mount the light source 200 on the support body 300.

[0092] In the modified example of light source 200 shown in Figures 19a and 19b, an example is shown in which the cross section is approximately trapezoidal overall, but depending on the manufacturing method of light reflecting member 220, the side surface may have steps or may be curved.

[0093] Fig. 20 shows a modified example of the light source 200. In the light source shown in Fig. 20a, in the up-down direction, the lower parts of the side surfaces of the first light-emitting element 211 and the second light-emitting element 212 are covered with the light reflecting member 220, and the upper parts of the side surfaces of the first light-emitting element 211 and the second light-emitting element 212 are exposed from the light reflecting member 220. This makes it easier to improve the color mixing of the first light-emitting element 211 and the second light-emitting element 212.

[0094] 20b, the height of the light reflecting member 220 is greater than the heights of the first light emitting element 211 and the second light emitting element 212. This makes it easier to narrow the light distribution of the light emitted from the light source 200.

[0095] FIG. 21 shows a modified example of the light source 200. In the light source shown in FIG. 21a, the light reflecting member 220 covers the lower surfaces of the first light emitting element 211 and the second light emitting element 212, and at least a part of the side surface of the first light emitting element 211 and the side surface of the second light emitting element 212 facing each other is exposed. By covering the lower surfaces of the first light emitting element 211 and the second light emitting element 212 with the light reflecting member 220, the light emitted from the lower surfaces of the first light emitting element 211 and the second light emitting element 212 is reflected by the light reflecting member 220, and the light emitted from the first light emitting element 211 and the second light emitting element 212 is easily extracted from the light emitting surface of the light emitting device. By exposing at least a part of the side surface of the first light emitting element 211 and the side surface of the second light emitting element 212 facing each other from the light reflecting member 220, the color mixing property of the first light emitting element 211 and the second light emitting element 212 is easily improved.

[0096] 21b, the height of the light reflecting member 220 at the portion located on the periphery of the light source is higher than the height of the first light emitting element 211 and the second light emitting element 212, and at least a part of the side surface of the first light emitting element 211 and the side surface of the second light emitting element 212 facing each other is exposed from the light reflecting member 220. Since the height of the light reflecting member 220 at the portion located on the periphery of the light source is higher than the height of the first light emitting element 211 and the third light emitting element 213, it becomes easier to narrow the light distribution of the light emitted from the light source. Since at least a part of the side surface of the first light emitting element 211 and the side surface of the second light emitting element 212 facing each other are exposed from the light reflecting member 220, it becomes easier to improve the color mixing of the first light emitting element 211 and the second light emitting element 212.

[0097] Fig. 22 shows a modified example of the light source 200. As shown in Fig. 22, the light source may include a light absorbing member 440 that covers the side surface of the light emitting element 210 directly or via a light reflecting member 220. By providing the light absorbing member 440 on the side surface of the light emitting element 210, it is possible to obtain an effect that unnecessary light emitted in the lateral direction from the light emitting element can be absorbed by the light absorbing member 440. The light absorbing member 440 may be configured to integrally cover the side surfaces of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213.

[0098] FIG. 23 shows a modified example of the light source 200. As shown in FIG. 23, the light source 200 may include a first light source 201 having a light reflecting member 220 covering the side surfaces of the first light emitting element 211 and the third light emitting element 213, and a second light source 202 having a light absorbing member 440 covering the side surface of the second light emitting element 212. When the first light emitting element 211 and the third light emitting element 213 emit blue light or green light, light is likely to be emitted from the side surfaces of the first light emitting element 211 and the third light emitting element 213, so it is preferable that the side surfaces of the first light emitting element 211 and the third light emitting element 213 are covered with the light reflecting member 220. By doing so, it is easy to reduce the absorption of light emitted from the side surfaces of the first light emitting element 211 and the third light emitting element 213 by the support. When the second light emitting element 212 emits red light, light is unlikely to be emitted from the side surfaces of the second light emitting element 212, so the side surfaces of the second light emitting element 21 may be covered with the light absorbing member 440. This makes it easier to reduce the decrease in contrast ratio between when the light emitting device is turned on and when it is turned off, which is caused by reflection of external light.

[0099] FIG. 24 shows a modified example of the light source 200. As shown in FIG. 24, the light source 200 may include a first light source 201 having a light reflecting member 220 covering the side surface of the first light emitting element 211, a second light source 202 having a light absorbing member 440 covering the side surface of the second light emitting element 212, and a third light source 203 having a light reflecting member 220 covering the side surface of the third light emitting element 213. When the first light emitting element 211 and the third light emitting element 213 emit blue light or green light, light is likely to be emitted from the side surfaces of the first light emitting element 211 and the third light emitting element 213, so that the side surfaces of the first light emitting element 211 and the third light emitting element 213 are preferably covered with the light reflecting member 220. By doing so, it is easy to reduce the absorption of the light emitted from the side surfaces of the first light emitting element 211 and the third light emitting element 213 by the support body. When the second light emitting element 212 emits red light, since light is unlikely to be emitted from the side surface of the second light emitting element 212, the side surface of the second light emitting element 212 may be covered with the light absorbing member 440. By doing so, it becomes easier to reduce a decrease in the contrast ratio between when the light emitting device is turned on and when it is turned off, which is caused by external light being reflected on the surface of the light source 200.

[0100] Fig. 25 shows a modified example of the light source 200. As shown in Fig. 25, the light source 200 may include a first light source 201 having a light reflecting member 220 covering the side surfaces of the first light emitting element 211 and the third light emitting element 213, and a second light source 202 having a light reflecting member 220 covering the side surface of the second light emitting element 212. This makes it easier to reduce absorption of light emitted from the side surfaces of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 by the support body.

[0101] FIG. 26 shows a modified example of the light source 200. As shown in FIG. 26, the light source 200 may include a light absorbing member 440 that covers the upper part of the side surface of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213. This makes it easier to reduce the decrease in the contrast ratio between when the light emitting device is turned on and when it is turned off, which is caused by the reflection of external light on the surface of the light source 200. It is preferable that the lower part of the side surface of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 is covered with the light reflecting member 220. This makes it easier to reduce the absorption of the light emitted from the side surface of the first light emitting element 211 and the third light emitting element 213 by the support body.

[0102] FIG. 27 shows a modified example of the light source 200. As shown in FIG. 27, the light source 200 may include a light absorbing member 440 that covers the upper parts of the side surfaces of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213, and a light reflecting member 220 that covers at least the lower parts of the side surfaces of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213. The light absorbing member 440 that covers the upper parts of the side surfaces of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 makes it easier to reduce a decrease in the contrast ratio between when the light emitting device is turned on and when it is turned off, which is caused by the reflection of external light on the surface of the light source 200. The light reflecting member 220 that covers at least the lower parts of the side surfaces of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 makes it easier to reduce the absorption of light emitted from the side surfaces of the first light emitting element 211, the second light emitting element 212, and the third light emitting element 213 by the support. It is preferable that the light absorbing member 440 covers the side surfaces of the light reflecting member 220. This makes it easier to reduce the decrease in the contrast ratio between when the light emitting device is turned on and when it is turned off, which is caused by external light being reflected on the surface of light source 200.

[0103] In the above-described modified example of the light source, it is preferable that the light reflecting member 220 surrounds the side surface of the light emitting element 210 without any breaks when viewed from above, as shown in Fig. 1. This makes it easier to reduce absorption of light emitted in the lateral direction from the light emitting element 210 by the side wall 310 of the support body 300. Furthermore, the light reflecting member 220 may be provided so as to cover only a part of the side surface of the light emitting element 210, if necessary.

[0104] The disclosure of this specification makes it possible to carry out the following items. (Action item 1) A support having a mounting surface and a side wall; A light source is disposed on the placement surface, The light source includes a plurality of light-emitting elements and a light reflecting member integrally covering side surfaces of the plurality of light-emitting elements, The light emitting device, wherein the light source and the side wall of the support are spaced apart. (Action item 2) The light-emitting device described in embodiment 1, wherein the plurality of light-emitting elements include a first light-emitting element that emits light of a first peak wavelength and a second light-emitting element that emits light of a second peak wavelength that is longer than the first peak wavelength. (Action item 3) The thickness of the second light emitting element is greater than the thickness of the first light emitting element, The light emitting device according to embodiment 1 or 2, wherein the thickness of the light reflecting member at the portion located below the first light emitting element is thicker than the thickness of the light reflecting member at the portion located below the second light emitting element. (Action item 4) The light emitting device according to any one of the above embodiments 1 to 3, wherein the thickness of the light reflecting member at the portion located below the first light emitting element is thicker than the thickness of the first light emitting element. (Action item 5) The light emitting device described in any one of implementation items 2 to 4, wherein the plurality of light emitting elements include a third light emitting element that emits light of a third peak wavelength, which is a wavelength longer than the first peak wavelength and shorter than the second peak wavelength. (Action item 6) The light emitting device according to embodiment 4, wherein the third light emitting element is located between the first light emitting element and the second light emitting element. (Action item 7) A light-emitting device described in any one of implementation items 1 to 6, wherein the first light-emitting element has a rectangular shape defined by a first long side extending in a first direction and a first short side extending in a second direction perpendicular to the first direction, and the second light-emitting element has a rectangular shape defined by a second long side extending in the first direction and a second short side extending in the second direction. (Action item 8) The light emitting device according to any one of the first to seventh embodiments, further comprising a light absorbing member that covers a side surface of the light source and a mounting surface of the support. (Action item 9) A support having a mounting surface and a side wall; A first light source is disposed on the placement surface, the first light source includes a first light emitting element that emits light of at least one first peak wavelength, and a first light reflecting member that covers a side surface of the first light emitting element and a bottom surface of the first light emitting element, The light emitting device is such that the first light source is spaced apart from the side wall of the support. (Action item 10) a second light emitting element that emits light of a second peak wavelength different from the first peak wavelength; The light emitting device described in embodiment 9 has a translucent member in contact with at least a portion of the upper surface of the first light emitting element, at least a portion of the upper surface of the second light emitting element, and at least a portion of the side surface of the second light emitting element. (Action item 11) the light-transmitting member has a first convex portion located above the first light-emitting element and a second convex portion located above the second light-emitting element, The light emitting device according to embodiment 10, wherein the height of the first convex portion is greater than the height of the second convex portion. (Action item 12) 10. The light emitting device according to claim 9, wherein the second peak wavelength is longer than the first peak wavelength. (Action item 13) The light emitting device according to any one of the above items 10 to 13, further comprising a light absorbing member in contact with the first light emitting element and the second light emitting element. (Action item 14) The light emitting device according to any one of items 9 to 13, wherein the thickness of the first light reflecting member at the portion located below the first light emitting element is thicker than the thickness of the first light emitting element. [Explanation of symbols]

[0105] 101 to 105...light emitting device, 200...light source, 210...light emitting element, 220...light reflecting member 300: Support body; 310: Side wall of support body; 320: Mounting surface of support body; 410: Conductive member 440: light absorbing member, 460: canopy, 500: light transmitting member, 505: light transmitting convex portion 720: adhesive member, 800: display device

Claims

1. A support having a mounting surface and a side wall; A light source is disposed on the placement surface, The light source includes a plurality of light-emitting elements and a light reflecting member integrally covering side surfaces of the plurality of light-emitting elements, The light emitting device, wherein the light source and the side wall of the support are spaced apart.

2. The light emitting device according to claim 1 , wherein the plurality of light emitting elements include a first light emitting element that emits light of a first peak wavelength, and a second light emitting element that emits light of a second peak wavelength that is longer than the first peak wavelength.

3. The thickness of the second light emitting element is greater than the thickness of the first light emitting element, The light emitting device according to claim 2 , wherein a thickness of the light reflecting member at a portion located below the first light emitting element is greater than a thickness of the light reflecting member at a portion located below the second light emitting element.

4. 4. The light emitting device according to claim 2, wherein a thickness of the light reflecting member at a portion located below the first light emitting element is greater than a thickness of the first light emitting element.

5. 4. The light emitting device according to claim 2, wherein the plurality of light emitting elements include a third light emitting element that emits light of a third peak wavelength, the third peak wavelength being a wavelength longer than the first peak wavelength and shorter than the second peak wavelength.

6. The light emitting device according to claim 4 , wherein the third light emitting element is located between the first light emitting element and the second light emitting element.

7. 4. The light-emitting device according to claim 1, wherein the first light-emitting element has a rectangular shape defined by a first long side extending in a first direction and a first short side extending in a second direction perpendicular to the first direction, and the second light-emitting element has a rectangular shape defined by a second long side extending in the first direction and a second short side extending in the second direction.

8. The light emitting device according to claim 1 , further comprising a light absorbing member that covers a side surface of the light source and a mounting surface of the support body.

9. A support having a mounting surface and a side surface; A first light source is disposed on the placement surface, the first light source includes a first light emitting element that emits light of at least one first peak wavelength, and a first light reflecting member that covers a side surface of the first light emitting element and a bottom surface of the first light emitting element, The light emitting device, wherein the first light source and a side surface of the support are spaced apart from each other.

10. A second light emitting element that emits light of a second peak wavelength different from the first peak wavelength; The light emitting device according to claim 9 , further comprising a light-transmitting member in contact with at least a portion of an upper surface of the first light emitting element, at least a portion of an upper surface of the second light emitting element, and at least a portion of a side surface of the second light emitting element.

11. the light-transmitting member has a first convex portion located above the first light-emitting element and a second convex portion located above the second light-emitting element, The light emitting device according to claim 10 , wherein the first convex portion has a height greater than a height of the second convex portion.

12. The light emitting device according to claim 9 , wherein the second peak wavelength is longer than the first peak wavelength.

13. The light emitting device according to claim 10 , further comprising a light absorbing member in contact with the first light emitting element and the second light emitting element.

14. 11. The light emitting device according to claim 9, wherein a thickness of the first light reflecting member at a portion located below the first light emitting element is greater than a thickness of the first light emitting element.

Images