JP7440780B2 - Light emitting device and surface emitting device using the light emitting device - Google Patents

Description

The present disclosure relates to a light emitting device and a surface emitting device using the light emitting device.

2. Description of the Related Art As a direct type backlight used in liquid crystal televisions and the like, a surface emitting device as disclosed in Patent Document 1, for example, is known.
The light emitting device disclosed in Patent Document 1 has a peripheral wall around a plurality of light sources and a frame arranged in a matrix. This makes it possible to divide the light emitting area and prevent light from leaking outside the area, while controlling the amount of light emitted by each light source and performing local dimming to increase the contrast ratio within multiple areas.

JP2013-25945A

However, there was a risk that the frame would expand and deform due to the heat generated from the light source.

Embodiments of the present invention provide a light emitting device that can suppress deformation of a frame and a surface light emitting device using the same.

The light emitting device according to the present embodiment includes a substrate on which a plurality of light sources are arranged, a first plane part having a first opening in which the light sources are arranged, and a first wall part surrounding the first plane part. a first reflecting member having a plurality of recesses; a second reflection member having a plurality of second recesses having a second plane portion having a second opening in which the light source is disposed; and a second wall portion surrounding the second plane portion; and a covering member disposed between the first reflecting member and the second reflecting member and covering a part of the first wall part and a part of the second wall part.

According to embodiments of the present invention, it is possible to provide a light emitting device that can suppress deformation of a frame and a surface emitting device using the same.

1 is an exploded view showing the overall configuration of a light emitting device according to an embodiment of the present invention. 1 is a cross-sectional view showing a part of a light emitting device and a surface emitting device according to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing an example of a light source according to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing an example of a light source according to an embodiment of the present invention. FIG. 1 is a cross-sectional view showing an example of a light source according to an embodiment of the present invention. FIG. 6(A) is a top view showing an example of a reflective member according to an embodiment of the present invention, and FIG. 6(B) is a sectional view taken along the line AA in FIG. 6(A). FIG. 2 is a top view showing an example of a reflective member according to an embodiment of the present invention.

Embodiments of the present disclosure will be described below with reference to the drawings. However, the light emitting device or surface light source device described below is for embodying the technical idea of the present disclosure, and the present disclosure is not limited to the following unless specifically stated. Furthermore, the content described in one embodiment or example is also applicable to other embodiments or examples.

A light emitting device according to an embodiment of the present invention will be described with reference to FIG.
FIG. 1 is an exploded view showing the overall configuration of a light emitting device. The light emitting device according to the embodiment of the present invention includes a substrate 120 on which a plurality of light sources 103 are arranged, a first reflecting member 110A, a second reflecting member 110B, and a first reflecting member 110A and a second reflecting member 110B. It has a covering member 200 disposed therebetween.

The first reflecting member 110A includes a plurality of first recesses 102A each having a first plane portion 106A in which a first opening 104A is formed and a first wall portion 105A surrounding the first opening 104A. Further, like the first reflecting member 110A, the second reflecting member 110B has a second recessed portion 102B having a second flat portion 106B in which the second opening 104B is formed and a second wall portion 105B surrounding the second opening 104B. It has several.

A first reflecting member 110A and a second reflecting member 110B are arranged on the substrate 120 such that the first opening 104A and the second opening 104B expose each of the plurality of light sources 103 arranged on the substrate 120. . As shown in FIG. 2, by arranging the light source 103 so as to penetrate the first opening 104A and the second opening 104B from below, the upper surface of the light source 103 becomes the upper surface of the first flat section 106A and the second flat section 106B. placed at a higher position. Thereby, the light emitted from the light source 103 can be efficiently reflected by the first wall portion 105A and the second wall portion 105B.

The first opening 104A and the second opening 104B are formed in a substantially circular shape approximately at the center of the first plane part 106A and the second plane part 106B. The shape and size of the opening are such that the entire light source 103 is exposed, and the opening is such that the light source 103 is exposed in the vicinity of the light source 103 so that the light from the light source can be reflected by the first plane part 106A and the second plane part 106B. It is preferable to form only one.

As the light source 103, a semiconductor light emitting element such as an LED can be suitably used. The plurality of light sources 103 are arranged on the substrate 120 at predetermined intervals. In FIG. 1, the light sources 103 are arranged in a matrix at equal intervals. Further, the first recess 102A and the second recess 102B are arranged in a matrix. Note that the matrix shape refers to a state where the elements are arranged in a grid pattern in the X direction (also referred to as the horizontal direction) and the Y direction (also referred to as the vertical direction).

The first reflective member 110A and the second reflective member 110B may be molded using a resin containing a reflective material made of metal oxide particles such as titanium oxide, aluminum oxide, silicon oxide, etc., or may not contain a reflective material. After molding using resin, a reflective material may be provided on the surface. It is preferable that the reflectance of the light emitted from the light source 103 is set to be 70% or more on average in the range of 440 nm to 630 nm.

Examples of the method for molding the first reflective member 110A and the second reflective member 110B include molding using a mold and stereolithography. As a molding method using a mold, injection molding, extrusion molding, compression molding, vacuum molding, pressure molding, press molding, and the like can be applied. For example, by vacuum forming a reflective sheet made of PET or the like, it is possible to obtain the first reflective member 110A in which the first plane portion 106A and the first wall portion 105A are integrally formed. Similarly, it is also possible to obtain a two-reflection member 110B in which the second plane portion 106B and the second wall portion 105B are integrally formed. The thickness of the reflective sheet is, for example, 100 to 300 μm.

A first wall portion 105A and a second wall portion 105B formed to surround the light source 103 exposed from the first opening 104A and the second opening 104B are arranged with respect to the upper surfaces of the first plane portion 106A and the second plane portion 106B. It is preferable to have an inclined surface that widens as the distance increases in the vertical direction (Z direction in FIG. 2).

In the example shown in FIG. 1, a reflective member is formed using a plurality of combinations of the first reflective member 110A and the second reflective member 110B on one substrate 120. As shown in FIG. 2, a gap 107 is formed between the first reflective member 110A and the second reflective member 110B. By having the gap 107, even if the first reflecting member 110A and the second reflecting member 110B expand due to the heat generated from the light source 103, the gap 107 absorbs the expansion in the horizontal direction (X and Y directions). , deformation of the first reflecting member 110A and the second reflecting member 110B can be suppressed.

For example, since the first reflecting member 110A and the second reflecting member 110B are fixed to the substrate 120, the expansion of the substrate 120 in the horizontal direction is inhibited, and stress with no escape causes the first reflecting member 110A and the second reflecting member 110B to The reflective member 110B is warped and floats off the substrate 120. Such warping occurs when the substrate 120, the first reflecting member 110A, and the second reflecting member 110B are arranged in a casing, and the thermally expanded first reflecting member 110A and second reflecting member 110B interfere with the casing. becomes more prominent.

In the example of FIG. 1, a total of 24 light sources 103, six in the X direction and four in the Y direction, are arranged at regular intervals on one substrate 120. The first reflecting member 110A has six first openings 104A corresponding to the respective light sources 103. The second reflective member 110B has six second openings 104B corresponding to the respective light sources 103. In addition, the example of FIG. 1 further includes another set of the first reflecting member 110A and the second reflecting member 110B. In this way, the light emitting device may include a plurality of sets of the first reflecting member 110A and the second reflecting member 110B. A covering member 200 is arranged between the first reflecting member 110A and the second reflecting member 110B which are adjacent to each other.

As shown in FIG. 2, the lower surfaces of the first plane part 106A and the second plane part 106B and the upper surface of the substrate 120 are fixed with an adhesive member 111. An adhesive member 111 is provided around the first opening 104A and the second opening 104B so that the light emitted from the light source 103 does not enter between the substrate 120 and the first reflecting member 110A and the second reflecting member 110B. Preferably, it is fixed. For example, it is preferable to arrange the adhesive member 111 in a ring shape along the opening. The adhesive member 111 may be a double-sided tape, a hot-melt adhesive sheet, or an adhesive liquid made of thermosetting resin or thermoplastic resin. These adhesive members preferably have high flame retardancy. Further, it may be fixed with screws instead of adhesive. In the vicinity of the gap 107, it is preferable that the substrate 120 and the first reflecting member 110A and the second reflecting member 110B are not fixed so that the expansion of the first reflecting member 110A and the second reflecting member 110B can be absorbed.

As shown in FIG. 2, the covering member 200 is provided to cover the gap 107 and a portion of the first wall portion 105A and the second wall portion 105B near the gap 107. Thereby, it is possible to close a portion where no reflective member is present and connect the adjacent first reflective member and second reflective member, thereby suppressing a decrease in light extraction efficiency. Therefore, like the first reflecting member 110A and the second reflecting member 110B, the covering member 200 is preferably formed of a member that can reflect light. Further, it is preferable that all the regions in which the gaps 107 are formed are covered with the covering member 200.

The first wall portion 105A and the second wall portion 105B covered with the covering member 200 are lower in height than the other first wall portions and second wall portions that are not covered with the covering member 200, or are lower in height than the first wall portions and the second wall portions that are covered with the covering member 200. The areas of the inclined surfaces of the portion 105A and the second wall portion 105B are formed to be small. Thereby, a gap can be formed at the joint between the adjacent first reflecting member 110A and second reflecting member 110B.

As shown in FIG. 2, the covering member 200 has a covering surface 201 that is inclined along the inclined surfaces of the first wall section 105A and the second wall section 105B. The gap 107 is covered by pressing the portion 105B from above.

In cross-sectional view, the angle θ1 between the first wall portion 105A not covered by the covering member 200 and the first plane 106A is the angle θ1 formed between the first wall portion 105A covered by the covering member 200 and the first plane 106A. It is preferable to set the angle to be larger than θ2. Thereby, when the first reflecting member 110A expands or contracts and moves, it can be moved along the inner surface of the covering surface 201. Similarly, for the second reflective member 110B, the angle formed between the second wall portion not covered by the covering member 200 and the second plane is the same as the angle formed between the second wall portion covered by the covering member 200 and the second plane. It is preferable to set the angle to be larger than the angle. Here, the covering surface 201 refers to a surface that covers the first wall 105A, the second wall 105B, and the gap 107, and includes the inner surface that is in contact with the first wall and the second wall, and the first wall. and an outer surface portion that is continuous with the inclined surface of the second wall portion and constitutes a reflective surface.

It is preferable that the covering surface 201 of the covering member 200 is formed in a cross shape in plan view. The intersection of the cross of this covering member 200 and the intersection of the top sides of adjacent wall parts are made to match, and the first wall part and the second wall part are covered with the covering member 200. A shaft portion 160 and a convex portion 164, which will be described later, may be formed at the intersection of the crosses of the covering member.

Further, a plurality of covering members 200 may be used for a set of the first reflecting member 110A and the second reflecting member 110B. For example, adjacent covering members 200 may overlap each other at their ends in the X direction or the Y direction, or may intersect and overlap in the X direction and the Y direction.

Preferably, the covering member 200 is fixed to the substrate 120. In the example shown in FIG. 2, the covering member 200 has a shaft portion 160, and above the shaft portion 160 there is a covering surface 201 that is a tapered surface that widens from above to below with the shaft portion as the center. It is formed.

As shown in FIG. 2, the shaft portion 160 is inserted into a through hole formed in the substrate 120, a back chassis 170, etc. arranged under the substrate 120. The shaft portion 160 has a retaining portion 162 having a larger diameter than the shaft portion 160 . Thereby, the shaft portion 160 inserted into the through hole of the board 120 and the through hole of the back chassis 170 is stopped at a predetermined height. The covering member 200 and the substrate 120 are fixed by caulking the shaft portion 160 inserted in this manner from below.

Further, the covering member 200 has a convex portion 164 that projects above the upper surface of the covering surface 201 on the side opposite to the crimped side. This convex portion 164 can function as a support member that supports a member placed above the light emitting device. For example, when disposing a diffuser plate that diffuses light from the light source 103, the plurality of convex portions 164 can be used to support the diffuser plate.

The light emitted from the light source 103 is reflected by the first wall portion 105A, the second wall portion 105B, and the outer surface of the covering surface 201 of the covering member, and is extracted above the light emitting device. The light distribution characteristics of the light source 103 may be of any type, but in order to illuminate each area surrounded by the first wall portion 105A and the second wall portion with less uneven brightness, the light source 103 should have a wide light distribution. It is preferable that there be.

In particular, it is preferable that each of the light sources 103 has a batwing type light distribution characteristic. As a result, the amount of light emitted directly above the light source 103 is suppressed, the light distribution of each light source is expanded, and the expanded light is transmitted to the first plane part 106A, the second plane part 106B, the first wall part 105A, and the first wall part 105A. By irradiating the second wall portion 105B, it is possible to suppress uneven brightness in each area surrounded by the first wall portion 105A and the second wall portion 105B.

Here, the batwing type light distribution characteristic is defined as a light emission intensity distribution where the light emission intensity is strong at angles where the absolute value of the light distribution angle is larger than 0°, with the optical axis L being 0°. Note that the optical axis L is defined as a line passing through the center of the light source 103 and perpendicular to a line on the plane of the substrate 120, as shown in FIG.

As the light source 103 having batwing type light distribution characteristics, for example, as shown in FIG. 3, a light source in which a light emitting element 108 having a light reflecting film 122 on the upper surface is covered with a sealing member 124 can be used. The light reflecting film 122 formed on the upper surface of the light emitting element 108 may be a metal film or a dielectric multilayer film (DBR film). As a result, light directed upward from the light emitting element 108 is reflected by the light reflecting film 122, the amount of light directly above the light emitting element 108 is suppressed, and a batwing type light distribution characteristic can be achieved. Since the light reflecting film 122 can be formed directly on the light emitting element 108, a batwing lens is not required, and the thickness of the light source 103 can be reduced.

For example, the height of the light emitting element 108 directly mounted on the substrate 120 is 100 to 500 μm, and the thickness of the light reflecting film 122 is 0.1 to 3.0 μm. Even including a sealing member 124 to be described later, the thickness of the light source 103 can be approximately 0.5 to 2.0 mm. The height of the first reflecting member 110A and the second reflecting member 110B combined with such a light source 103 is preferably 8.0 mm or less, and in the case of a thinner light emitting device, it is preferably about 1.0 to 4.0 mm. The distance to the diffuser plate 130 is preferably about 8.0 mm or less, and in the case of a thinner light emitting device, it is preferably about 2.0 to 4.0 mm. Thereby, the backlight unit including optical members such as the diffuser plate 130 can be made extremely thin.

It is preferable that the light reflection film 122 has a reflectance angle dependence on the incident angle with respect to the emission wavelength of the light emitting element 108. Specifically, the reflectance of the light reflection film 122 is set so that it is lower when the light is incident obliquely than when the light is incident vertically. As a result, the change in brightness immediately above the light emitting element becomes gradual, and it is possible to prevent the area directly above the light emitting element from becoming extremely dark, such as a dark spot.

As shown in FIG. 3, the light emitting element 108 is flip-chip mounted via a bonding member 128 so as to straddle a pair of positive and negative conductor wirings 126a and 126b provided on the upper surface of the substrate 120. An underfill 136 may be disposed between the lower surface of the light emitting element 108 and the upper surface of the substrate 120. A light reflecting layer 138 such as a white resist may be formed in a region of the conductor wirings 126a and 126b where electrical connection is not made.

The sealing member 124 that covers the light emitting element is a translucent member and is provided so as to cover the light emitting element 108. The sealing member 124 may be in direct contact with the substrate 120. The sealing member 124 is adjusted to a viscosity that allows printing or dispenser application, and can be cured by heat treatment or light irradiation. The shape of the sealing member 124 may be, for example, approximately hemispherical, a convex shape that is vertically elongated in cross-section (the length in the Z direction is longer than the length in the X direction in cross-section), or flat in cross-section (the length in the Z direction is longer in the cross-section). It may be formed to have a convex shape (the length in the X direction is longer than the length in the Z direction) when viewed from above, or a circular or elliptical shape when viewed from above.

Note that the light source 103 for obtaining batwing-type light distribution characteristics is not limited to the above-described structure. For example, as shown in FIG. 4, a light reflecting film 122 is provided on the upper surface of a sealing member 124 that covers the light emitting element 108, and the side surfaces of the sealing member 124 are exposed from the light reflecting film 122 to extract light laterally. It may be a structure. The light emitting element 108 may be mounted on the upper surface of the support 140, or may have an external electrode on the lower surface of the support 140. Even with the light source 103 shown in FIG. 4, the light directed upward from the light emitting element 108 is reflected by the light reflecting film 122, and the amount of light directly above the light emitting element 108 is suppressed, resulting in a batwing type light distribution characteristic. I can do it.

Furthermore, as the light source 103 for obtaining batwing type light distribution characteristics, a lens 142 covering the light emitting element 108 may be provided as shown in FIG. The lens 142 has a cylindrical outer shape, and has a recess 148 in which the light emitting element 108 is arranged approximately in the center of the bottom surface of the lens.

Further, the surface facing the bottom surface of the lens has a concave portion 150 approximately at the center, and a curved surface is formed in which the side facing the substrate 120 is convex from the center side toward the outside. Note that the light emitting element 108 may be a light emitting device mounted on a support and covered with a covering member. Even with the light source 103 shown in FIG. 5, the light directed upward from the light emitting element 108 is reflected laterally on the inner surface of the recess 150 and is emitted from the convex curved surface, so that the amount of light directly above the light emitting element 108 is reduced. is suppressed, and a batwing type light distribution characteristic can be achieved.

In the above example, one light emitting element 108 is used as the light source 103 for each area partitioned by the first wall part and the second wall part, but a plurality of light emitting elements 108 are used as the light source 103. A single light source 103 may also be used.

The shape of the flat portion 106 is preferably a polygon. This makes it easy to divide the light emitting surface into an arbitrary number of sections using the first wall section 105A and the second wall section 105B according to the area of the light emitting surface. The shapes of the first plane part 106A and the second plane part 106B include, for example, a square or a rectangle as shown in FIG. 6, and a hexagon as shown in FIG. 7. When the planar portion 106 has a hexagonal shape, the first reflecting member 110A and the second planar portion 106B are arranged in a honeycomb shape as shown in FIG. In the case of a honeycomb arrangement, the light sources 103 are arranged in a staggered manner. Although FIGS. 6 and 7 show an example of the first reflecting member 110A, the second reflecting member 110B can also be formed in the same manner.

The number of divisions of the area divided by the first wall part and the second wall part can be set arbitrarily, and the position of the light source and the shape of the first wall part and the second wall part can be changed according to the desired size. can do.

(Surface emitting device)
A case will be described in which the light emitting device described above is used as a light source for a direct type backlight. As shown in FIG. 2, optical members such as a diffuser plate 130 and a prism sheet are arranged above the light emitting device at a predetermined distance, and a liquid crystal panel 132 is further arranged thereon to form a surface emitting device.

Although the backlight light source can be made thinner by optimizing the shapes of the first reflecting member 110A and the second reflecting member 110B, For example, even if P/H is about 5.2 regarding the light source pitch (P) and the distance (H) from the light source mounting surface to the optical member arranged in the optical axis L direction, the brightness uniformity can be satisfied. Suppose that the light reflecting member is optimized. By doing so, it is possible to maintain brightness uniformity up to P/H = 3.3, so you can use it for various backlights by simply increasing or decreasing the number of sections depending on the desired screen size and desired P/H. A light source can be provided. The local dimming control area, which will be described later, can also be handled by selecting one or two division units to be controlled. This eliminates the need to vary the divided area depending on the desired screen size and optimize the light reflecting member each time, thereby reducing costs.

The respective light sources 103 arranged on the substrate 120 can be driven independently of each other, and dimming control (for example, local dimming or HDR) for each light source is possible. Since each light source 103 is surrounded by the first wall 105A and the second wall 105B, it is possible to suppress light emitted from adjacent light sources from entering an adjacent area across the wall. I can do it. For example, when only one area surrounded by the first wall part 105A is turned off, the brightness does not decrease when light from an adjacent area enters, and even when black is displayed on a display device, it becomes a whitish black. Brightness can be reduced by suppressing the incidence of unnecessary light. Furthermore, even when it is desired to increase the brightness in only one area, it is possible to increase the brightness in only one area while suppressing the incidence of light into adjacent areas.

Materials suitable for each component of the light emitting device of the embodiment will be described below.
(substrate)
The substrate 120 is a member on which the light source 103 is placed, and as shown in FIG. 3, has conductor wirings 126a and 126b for supplying power to the light source such as the light emitting element 108.

The substrate may be made of any material as long as it can insulate and separate at least one pair of conductor wirings 126a and 126b. Examples include resins such as ceramics, phenol resin, epoxy resin, polyimide resin, BT resin, polyphthalamide (PPA), and polyethylene terephthalate (PET). A so-called metal substrate in which an insulating layer is formed on a metal member may be used.

The thickness of the substrate can be selected as appropriate, and it may be either a flexible substrate that can be manufactured by a roll-to-roll method or a rigid substrate. The rigid substrate may be a bendable thin rigid substrate.

(Joining member)
The bonding member is a member for fixing the light emitting element 108 to the substrate or conductor wiring. Examples include insulating resin and conductive members, and in the case of flip-chip mounting as shown in FIG. 3, conductive members are used. Specifically, Au containing alloy, Ag containing alloy, Pd containing alloy, In containing alloy, Pb-Pd containing alloy, Au-Ga containing alloy, Au-Sn containing alloy, Sn containing alloy, Sn-Cu containing alloy, Sn- Examples include Cu--Ag-containing alloys, Au--Ge-containing alloys, Au--Si-containing alloys, Al-containing alloys, Cu--In containing alloys, mixtures of metal and flux, and the like.

(light reflective layer)
Preferably, the conductor wiring is covered with a light reflective layer 138 except for the portion electrically connected to the light emitting element 108 or other material. That is, as shown in FIG. 3, a resist for insulatingly covering the conductor wiring may be disposed on the substrate 120, and the light reflecting layer 138 can function as a resist. By incorporating a white filler into the resin material described below, it is possible to prevent light leakage and absorption and improve the light extraction efficiency of the light emitting device.

(Light emitting element)
A known light emitting element can be used as the light emitting element 108. For example, it is preferable to use a light emitting diode as the light emitting element 108.
The light emitting element 108 can be selected to have an arbitrary wavelength. For example, as the blue and green light emitting elements, those using nitride semiconductors can be used. Further, as the red light emitting element, GaAlAs, AlInGaP, etc. can be used. Furthermore, semiconductor light emitting elements made of materials other than these can also be used. The composition, emitted light color, size, number, etc. of the light emitting elements used can be appropriately selected depending on the purpose.

(Sealing member)
The sealing member 124 may be arranged to cover the light emitting element for the purpose of protecting the light emitting element from the external environment and optically controlling light output from the light emitting element. As the material of the sealing member, a translucent resin such as epoxy resin, silicone resin, or a mixture thereof, glass, or the like can be used. Among these, silicone resins are preferably selected in consideration of light resistance and ease of molding.

Furthermore, the sealing member includes a wavelength conversion material such as a phosphor that absorbs light from the light emitting element and emits light of a different wavelength from the output light from the light emitting element, and a material that diffuses the light from the light emitting element. A diffusing agent can be included. Further, a coloring agent may be included in accordance with the color of light emitted by the light emitting element.

The light emitting device and surface emitting device of the present invention can be used in various light emitting devices such as a light source for a backlight of a display device and a light source for a lighting device.

120 Substrate 103 Light source 102A First recess 104A First opening 105A First wall 106A First plane 102B Second depression 104B Second opening 105B Second wall 106B Second plane 108 Light emitting element 110A First reflective member 110B 2 Reflective member 111 Adhesive member 122 Light reflective film 124 Sealing member 126a, 126b Conductor wiring 130 Diffusion plate 132 Liquid crystal panel 136 Underfill 138 Light reflective layer 140 Support body 142 Lens 200 Covering member 201 Covering surface 160 Shaft portion 162 Retaining portion 164 Convex portion 170 Back chassis

Claims (10)

a substrate; a light source disposed on the top surface of the substrate;
The light source includes a light emitting element, a sealing member covering the light emitting element,
a light reflecting film on the upper surface of the sealing member ;
The shape of the sealing member is a vertically elongated shape that is long in a direction perpendicular to the upper surface of the substrate when viewed in cross section;
The thickness of the light source is 0.5 to 2.0 mm, and the light source has batwing type light distribution characteristics,
A plurality of light emitting devices are arranged on the substrate in a matrix. The light emitting device according to claim 1, wherein the plurality of light sources are arranged at regular intervals on the substrate. The light emitting device according to claim 1 or 2, wherein the sealing member includes a wavelength conversion material that emits light of a different wavelength from the output light from the light emitting element. The light emitting device according to claim 1, wherein the sealing member includes a diffusing agent that diffuses light from the light emitting element. a first reflecting member provided on the substrate, including a plurality of first recesses each having a first plane part having a first opening in which each of the plurality of light sources is disposed, and a first wall part surrounding the first plane part; The light emitting device according to any one of claims 1 to 4, comprising: The light emitting device according to claim 5, wherein an upper surface of the substrate and a lower surface of the first plane part are fixed. The light emitting device according to claim 5 or 6, wherein the upper surface of the light source is arranged at a higher position than the upper surface of the first plane part. The light emitting device according to any one of claims 5 to 7, wherein the first wall portion has an inclined surface that widens as the distance increases in a direction perpendicular to the upper surface of the first flat portion. The light emitting device according to any one of claims 1 to 8, wherein the light source further includes a support, and the light emitting element is provided on the upper surface of the support. The light emitting device according to claim 9, further comprising an external electrode on the lower surface of the support.

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