Light-emitting device and display device

Abstract

The invention relates to a light emitting device and a display device. A light-emitting device (1000A) is provided with: a chassis (100); at least one first light-emitting element (51) which is disposed on the chassis and emits light from the upper surface and the side surface; a reflective member (153) disposed around the at least one first light-emitting element (51); and a lens (73) that overlaps the at least one first light-emitting element (51) in a plan view, the shape of the lens (73) in the plan view being an ellipse having a long axis (LA3) in the x-direction and a short axis (SA3) in the y-direction orthogonal to the x-direction, the area of a portion of the reflective member (153) overlapping the lens (73), said portion being present on the-y-direction side of the long axis (LA3), is larger than the area of a portion of the reflective member (153), said portion being present on the + y-direction side of the long axis (LA3).

Description

Technical Field

[0001] The present invention relates to a light emitting device and a display device. Background Art

[0002] As a light emitting device having a semiconductor light emitting element represented by a light emitting diode (LED) light emitting device, bullet-shaped (bulb-shaped) light emitting devices, surface mount type (SMD type) light emitting devices, etc. are known. A light emitting device having a high light distribution in the front direction is used, for example, a large display device in which light emitting devices are arranged as pixels in a matrix, such as an LED display.

[0003] For example, Patent Document 1 discloses a surface-mounted LED light-emitting device having a lens on the light-emitting surface side. Patent Document 1 discloses a light-emitting device in which three light-emitting elements (LED chips) are respectively arranged in the center of a cup (cavity) having an elliptical concave surface. The inner surface of the cup is covered with a reflective material. The light-emitting device described in Patent Document 1 can be used as a display device set outdoors.

[0004] Patent Document 1: U.S. Patent Application Publication No. 2020 / 0176643 Summary of the invention

[0005] The embodiment illustrated in the present invention provides a light emitting device capable of effectively utilizing light emitted from a light emitting element. The embodiment illustrated in the present invention provides a display device capable of displaying with high contrast.

[0006] A light-emitting device in one embodiment of the present invention comprises: a base; at least one first light-emitting element, which is arranged on the above-mentioned base and emits light from the upper surface and the side surface; a reflective component, which is arranged around the above-mentioned at least one first light-emitting element; and a lens, which overlaps with the above-mentioned at least one first light-emitting element and the reflective component arranged around the above-mentioned first light-emitting element in a top view, and the shape of the above-mentioned lens in the top view is an ellipse having a major axis and a minor axis in the x-direction and the y-direction orthogonal to the x-direction, respectively, and in the top view, the area of ​​the portion of the above-mentioned reflective component overlapping with the above-mentioned lens that exists on the -y direction side of the above-mentioned major axis is larger than the area of ​​the portion that exists on the +y direction side of the above-mentioned major axis.

[0007] A light-emitting device according to a certain embodiment of the present invention is a display device having a plurality of light-emitting devices arranged in a matrix having rows and columns, each of the plurality of light-emitting devices being the light-emitting device described above, and the plurality of light-emitting devices being arranged to form a formation in the x direction and to form a column in the y direction.

[0008] According to one embodiment of the present invention, a light emitting device capable of effectively utilizing light emitted from a light emitting element can be provided. In addition, according to another embodiment of the present invention, a display device capable of high-contrast display can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic perspective view of a light emitting device 1000A according to an embodiment of the present invention.

[0010] Figure 2A 100A is a schematic side view of the light emitting device 1000A in the +y direction.

[0011] Figure 2B 100A is a schematic side view of the light emitting device 1000A in the -x direction.

[0012] Figure 3A It is a schematic top view of the light emitting device 1000A.

[0013] Figure 3B 1 is a schematic plan view of the resin package 100 of the light emitting device 1000A.

[0014] Figure 3C The resin package 100 of the light emitting device 1000A is Figure 3B The cross section along the 3C-3C′ line in FIG.

[0015] Figure 3D The resin package 100 of the light emitting device 1000A is Figure 3B The cross section of the 3D-3D′ line in .

[0016] Figure 4 This is a schematic top view of a light emitting device 1000B according to an embodiment of the present invention.

[0017] Figure 5 This is a schematic top view of a light emitting device 1000C according to an embodiment of the present invention.

[0018] Figure 6 This is a schematic top view of a light emitting device 1000D according to an embodiment of the present invention.

[0019] Fig. 7A This is a schematic top view of a light emitting device 1000E according to an embodiment of the present invention.

[0020] Figure 7B This is a schematic plan view of a resin package 100 of a light emitting device 1000F according to an embodiment of the present invention.

[0021] Fig. 8A This is a schematic perspective view for explaining the process of forming a reflective member and a light absorbing member of a light emitting device according to an embodiment of the present invention.

[0022] Figure 8B A simplified perspective view for explaining the process of forming a reflective component and a light absorbing component of a light emitting device according to an embodiment of the present invention ( Fig. 8A (Continuation).

[0023] Figure 8C A simplified perspective view for explaining the process of forming a reflective component and a light absorbing component of a light emitting device according to an embodiment of the present invention ( Figure 8B (Continuation).

[0024] Fig. 9 It is a schematic top view of a display device 2000 according to an embodiment of the present invention.

[0025] Fig.10 is a schematic partial cross-sectional view of the display device 2000 .

[0026] Fig.11A This is a schematic cross-sectional view of a light emitting device 1000G according to an embodiment of the present invention.

[0027] Fig. 11B This is a schematic cross-sectional view showing an enlarged portion of the light emitting device 1000G.

[0028] Fig. 11C It is a graph showing the relationship between the relative luminous intensity and the directivity angle of the light emitting device 1000G.

[0029] Fig.11D It is a schematic top view of the light emitting device 1000G.

[0030] Fig.12 This is a schematic top view of a light emitting device 1000H according to an embodiment of the present invention.

[0031] Fig.13 This is a schematic top view of a light emitting device 1000J according to an embodiment of the present invention.

[0032] Fig.14A This is a schematic top view of a light emitting device 1000K according to an embodiment of the present invention.

[0033] Fig. 14B This is a schematic top view of a light emitting device 1000L according to an embodiment of the present invention.

[0034] Fig.15A This is a schematic top view of a light emitting device 1000M according to an embodiment of the present invention.

[0035] Fig. 15B This is a schematic perspective view in which a part of the light emitting device 1000M is enlarged.

[0036] Fig. 15C This is a schematic cross-sectional view showing an enlarged portion of the light emitting device 1000M. DETAILED DESCRIPTION

[0037] Hereinafter, the embodiments of the present invention will be described with appropriate reference to the accompanying drawings. The light-emitting device and display device described below are devices for implementing the technical concept of the present invention. Unless otherwise specifically stated, the present invention is not limited to the following devices. In addition, the contents described in one embodiment can also be applied to other embodiments and variations. In addition, the size, positional relationship, etc. of the structural components shown in the drawings are sometimes exaggerated for the purpose of clear description.

[0038] In the following description, structural members having the same function are often indicated by the same reference figure mark, and the description is omitted. Or there is a case where the reference figure mark is not marked for structural members that are not referenced in the description. In the following description, there are cases where terms indicating specific directions or positions (for example, "upper", "lower", "right", "left" and other terms including these terms) are used. However, these terms are used only to facilitate the understanding of the relative directions or positions in the referenced drawings. As long as the relationship between the relative directions or positions of the terms "upper" and "lower" in the referenced drawings is the same, the drawings, actual products, manufacturing devices, etc. other than the present invention may not be configured the same as the referenced drawings. In the present invention, "actually parallel" includes the case where two straight lines, edges, surfaces, etc. are in the range of about 0° to ±5° unless otherwise specified. In addition, in the present invention, "actually perpendicular" or "actually orthogonal" includes the case where two straight lines, edges, surfaces, etc. are in the range of about 90° to ±5° unless otherwise specified.

[0039] An xyz orthogonal coordinate system is sometimes used to describe the arrangement of structural components of a light-emitting device and a display device. Figure 1 The mutually orthogonal x-axis, y-axis, and z-axis references shown are often illustrated with arrows indicating the above directions in other drawings of the present invention. The light emitting device emits light in the +z direction. In addition, in the top view, the direction parallel to the major axis of the elliptical lens configured to overlap the light emitting element is set as the x-axis, and the direction parallel to the minor axis is set as the y-axis. In the case where the light emitting device has a plurality of light emitting elements, the plurality of light emitting elements are arranged along the y-direction. In addition, in a display device having a plurality of light emitting devices arranged in a matrix having rows and columns, the plurality of light emitting devices form rows along the x-direction and columns along the y-direction.

[0040] A light-emitting device in a certain embodiment of the present invention comprises: a base; at least one first light-emitting element arranged on the base and emitting light from the upper surface and the side surface; a reflective component arranged around the at least one first light-emitting element; and a lens overlapping with the at least one first light-emitting element in a top view, wherein the shape of the lens in the top view is an ellipse having a major axis and a minor axis in the x-direction and in the y-direction orthogonal to the x-direction, respectively, and in the top view, the reflective component is arranged in such a manner that an area of ​​a portion of a region where the reflective component arranged around the at least one first light-emitting element overlaps with the lens and exists on the -y direction side of the major axis is larger than an area of ​​a portion existing on the +y direction side of the major axis.

[0041] The reflective component of the light-emitting device according to the embodiment of the present invention can be applied to various light-emitting devices represented by the light-emitting devices described in Japanese Patent Application No. 2022-083491 and Japanese Patent Application No. 2022-083492 applied by the present applicant. Hereinafter, an example of applying the reflective component of the light-emitting device according to the embodiment of the present invention to the light-emitting device described in Japanese Patent Application No. 2022-083491 or Japanese Patent Application No. 2022-083492 will be described. Regarding the configuration of the reflective component and the structure for limiting the configuration of the reflective component, the entire disclosure of Japanese Patent Application No. 2022-083491 and 2022-083492 is referenced in this specification.

[0042] (First Embodiment)

[0043] Figure 1 FIG. 1 is a schematic perspective view of a light emitting device 1000A according to an embodiment of the present invention. Figure 1 In the illustrated structure, the outer shape of the light emitting device 1000 in the top view has a generally rectangular shape. Each side of the rectangular outer shape is actually parallel to the x-axis or y-axis shown in the figure. The z-axis is actually perpendicular to the x-axis and the y-axis. In addition, the outer shape of the light emitting device 1000A in the top view may not be a rectangular shape. In addition, the rectangle is a quadrilateral whose internal angles are all 90°.

[0044] Figure 2A is a schematic side view of the light emitting device 1000A when viewed from the +y direction. Figure 2B This is a schematic side view of the light emitting device 1000A as viewed from the -x direction. Figure 3A 1000A is a schematic top perspective view of the light emitting device 1000A. Figure 3B is a schematic top view of the resin package 100 of the light emitting device 1000A. Figure 3C is a resin package 100 along Figure 3B The cross section of line 3C-3C′ in Figure 3D is a resin package 100 along Figure 3BThe cross section of the 3D-3D′ line in Figure 3C The convex portion 47 located at the rear portion of the cross section is also shown.

[0045] [Base]

[0046] The light emitting device 1000A includes a resin package 100 as a base, at least one light emitting element 50, a reflective component 150, and a lens portion 70. The base is a component on which the light emitting element is mounted, for example, a resin package including a resin component and a wire. The base may also be a ceramic component or a conductive component. Hereinafter, an example in which the base is a resin package 100 and the light emitting element 50 is an LED chip 50 will be described.

[0047] The light emitting device 1000A includes a base 100, a plurality of light emitting elements 50 including a first light emitting element 51, a second light emitting element 52, and a third light emitting element 53, a reflective member 150, light absorbing members 160 and 190, and a molded resin portion 60. The molded resin portion 60 includes a base portion 61 that seals the plurality of light emitting elements 50, and a plurality of lens portions 70 located above the base portion 61.

[0048] [Resin package 100]

[0049] The resin package 100 includes at least one pair of wires and a resin member 40 for fixing the pair of wires. Figure 3A In the example shown, a plurality of pairs of conducting wires are used as an example for explanation. In the present embodiment, the resin member is, for example, a dark-colored resin member 40 made of a dark-colored resin.

[0050] The resin package 100 has a main surface 100a, a back surface 100b on the opposite side of the main surface 100a, and an outer portion 100c located between the main surface 100a and the back surface 100b. The back surface 100b of the resin package 100 includes the lower surface of the resin component 40 and the mounting surface of each lead when the light emitting device 1000A is fixed to the mounting substrate. Here, the back surface 100b is actually parallel to the xy plane.

[0051] like Figure 3A As shown, the shape of the main surface 100a of the resin package 100 in the top view is a quadrilateral. Each side of the quadrilateral of the main surface 100a is actually parallel to the x-axis or the y-axis. In addition, the shape of the main surface 100a in the top view may also have a shape other than a quadrilateral, for example, it may also be a roughly triangular, roughly quadrilateral, roughly pentagonal, roughly hexagonal or other polygonal shapes, circular shapes, elliptical shapes, etc. with a curve. In addition, when the shape of the main surface 100a in the top view is a polygon, part or all of the corners of the polygon may also be rounded.

[0052] like Figure 3B to Figure 3DAs shown, the main surface 100a of the resin package 100 has a resin component 40 and a first area 20 divided by each of a plurality of wires 11a to 13b. The first area 20 is a concave portion having a bottom surface 20A and an inner side surface 20B surrounding the bottom surface. The bottom surface 20A includes an exposed area 30 of at least one wire. A light emitting element 50 is arranged in the first area 20. The inner side surface 20B of the first area 20 is integrally formed with the resin component 40 constituting a part of the bottom surface 20A. Alternatively, the inner side surface of the first area 20 may be formed of a material different from that of the resin component 40 constituting a part of the bottom surface 20C. The first area 20 only needs to be an area where the reflective component 150 and the light absorbing components 160 and 190 are arranged. Leads may also be connected in the first area 20.

[0053] like Figure 3B As shown, the main surface 100a has a plurality of first regions 20. The shape of the first region 20 in the top view is, for example, a quadrilateral. In addition, part or all of the corners of the quadrilateral may be rounded. The plurality of first regions 20 may all have the same size and shape, or may have different sizes and shapes. The size of one first region 20 is not particularly limited. For example, the first region 20 only needs to have a size for configuring a component for bonding the light-emitting element 50 to the wires 11a to 13b, and a size for configuring the reflective component 150. When the first light-emitting element 51 and the third light-emitting element 53 of the same size are configured, the first regions 20 of the same size may be configured, and when the first light-emitting element 51 and the third light-emitting element 53 of different sizes are configured, the first regions 20 of different sizes may be configured. A plurality of first regions 20 are configured corresponding to each of the lens portions 71 to 73. The light-emitting device 1000A has a first region 21 corresponding to the lens portion 73, a first region 22 corresponding to the lens portion 71, and a first region 23 corresponding to the lens portion 72. In the plan view, the main surface 100a has resin members 40 between the first region 21 and the first region 22 and between the first region 22 and the first region 23. By arranging the resin member 40 with a low thermal expansion coefficient between the light emitting elements 50, the influence of stress generated during the manufacture of the molded resin portion 60 on the light emitting elements 50 can be reduced.

[0054] The main surface 100a of the resin package 100 further includes a resin member 40 and a second region 26 partitioned by each of the plurality of wires 11a to 13b. Figure 3C , Figure 3DAs shown, the second region 26 is a concave portion having a bottom surface 20C and an inner side surface 20D surrounding the bottom surface 20C. The second region 26 includes an exposed region 30 for exposing the wire. The second region 26 can be any region as long as the light absorbing components 160 and 190 are arranged. By having the second region 26 on the main surface 100a of the resin package 100, components different from those in the first region 20 can be arranged. Figure 3C As shown, the inner side surface 20D has a first inner side surface 20D1, a second inner side surface 20D2, and a step surface 20DS. The first inner side surface 20D1 is continuous with the bottom surface 20C. The second inner side surface 20D2 is continuous with the main surface 100a. The step surface 20DS is connected to the first inner side surface 20D1 and the second inner side surface 20D2. As in the first region 20, the inner side surface may be formed of a component different from the resin component 40. A lead is connected to the second region 26. Figure 3A As shown, in the top view, the second region 26 is arranged adjacent to and separated from the first region 20. The first region 20 is arranged between the two second regions 26. The length of the second region 26 in the y direction is longer than the length of the first region 20 in the y direction. The length of the second region 26 in the x direction may be the same as or different from the length of the first region 20 in the x direction. For example, Figure 3B As shown, the length of the first region 22 in the x direction is longer than the lengths of the first region 21 and the first region 23 in the x direction.

[0055] like Figure 2A As shown, in the outer portion 100c of the resin package 100, the resin package 100 has a first step surface st1. The first step surface st1 faces the same direction as the main surface 100a. The first step surface st1 is located on the back surface 100b side of the second point Q of the base portion 61. The outer portion 100c of the resin package 100 also has a second step surface st2. The second step surface st2 is located on the outside of the first step surface st1 in the top view. The outer portion 100c of the resin package 100 has a second surface p2 that connects the first step surface st1 and the second step surface st2. The outer portion 100c of the resin package 100 has a third surface p3 that connects the second step surface st2 and the back surface 100b. A recess may be arranged at a position where the second step surface st2 intersects the second surface p2.

[0056] [Resin component 40]

[0057] The resin component 40 has insulating properties in order to cut off the light emitting element 50 from the outside electricity. The color of at least the part of the effective resin component 40 located on the main surface 100a side of the resin package 100, that is, the light emitting observation side, is a dark color system such as black or gray. For example, the resin component 40 can also be colored in a dark color system. Or the resin component 40 can also be a component in which a dark color ink is printed on a white resin. Or the resin component 40 can also be molded by two colors of dark resin and white resin. The resin component 40 can reduce the reflection of external light such as sunlight and indoor light in the main surface 100a of the resin package 100, and can improve the contrast when the light emitting device 1000A is turned on and off. Thereby, the reduction in the contrast of the outdoor display can be reduced. In addition, the "dark color system" in this specification refers to a color with a lightness of less than 4.0 in the Munsell color system (20 tones). The color tone is not particularly limited, and the chroma can be arbitrarily determined as needed. It is preferably a lightness of less than 4.0 and a chroma of less than 4.0.

[0058] The resin member 40 is not limited to the illustrated shape as long as it has a shape capable of holding at least a portion of the plurality of conductive wires 11a to 13b. The resin member 40 preferably integrally fixes the plurality of conductive wires (here, three pairs of conductive wires).

[0059] The material of the resin member 40 is preferably a material having a low thermal expansion coefficient and excellent adhesion to the molded resin portion 60. The thermal expansion coefficient of the resin member 40 may be substantially equal to that of the molded resin portion 60, or may be smaller than that of the molded resin portion 60 in consideration of the influence of heat from the light emitting element 50.

[0060] The resin component 40 can use a thermoplastic resin, for example. As the thermoplastic resin, aromatic polyamide resin, polyphthalamide resin (PPA), sulfone resin, polyamide-imide resin (PAI), polyketone resin (PK), polycarbonate resin, polyphenylene sulfide (PPS), liquid crystal polymer (LCP), ABS resin, PBT resin and other thermoplastic resins can be used. In addition, as a thermoplastic material, a material containing glass fiber in the above-mentioned thermoplastic resin can also be used. In this way, by containing glass fiber, it has high rigidity and becomes a high-strength resin package. In addition, in this specification, a thermoplastic resin refers to a substance with a linear polymer structure that softens and then liquefies when heated, and solidifies when cooled. As such a thermoplastic resin, for example, styrene-based, acrylic-based, cellulose-based, polyethylene-based, vinyl-based, polyamide-based, fluorinated (fluorinated) carbon-based resins and the like.

[0061] Alternatively, the resin member 40 may be made of a thermosetting resin such as silicone resin or epoxy resin.

[0062] The resin material of the resin part 40 may also be added with a colorant. As the colorant, various dyes and pigments are preferably used. Specifically, Cr2O3, MnO2, Fe2O3, carbon black, etc. are mentioned. The amount of the colorant added is, for example, 0.3% by mass to 3.5% by mass, and preferably 1.0% by mass to 2.5% by mass, relative to the resin material that becomes the base material. The resin material of the resin part 40 may be, for example, a material in which 2% by mass of dark particles such as carbon are added to polyphthalamide (PPA). The resin material of the resin part 40 may also contain glass fillers, etc. The glass filler may also be colored into a dark color by carbon black, etc.

[0063] [Wires 11a to 13b]

[0064] Each of the plurality of conductive wires 11a to 13b has conductivity and functions as an electrode for supplying power to the corresponding light emitting element 50. The plurality of conductive wires 11a to 13b have an exposed region 30 exposed from the resin member 40.

[0065] In the light emitting device 1000A, each of the wires 11a and 11b constituting the first wire pair is bent so as to have a first portion 91 located on the main surface 100a side of the resin package 100, a second portion 92 located on the back surface 100b side of the resin package 100, and a third portion 93 located between the first portion 91 and the second portion 92 and extending along the outer portion 100c of the resin package 100. At least a portion of the second portion 92 of the wires 11a and 11b is exposed on the back surface 100b of the resin package 100, and becomes a mounting surface when the light emitting device 1000A is fixed to the mounting substrate. The mounting surface of the wires 11a and 11b is preferably coplanar with the lower surface of the resin component 40. The wires 12a and 12b constituting the second wire pair and the wires 13a and 13b constituting the third wire pair also have the same structure as the first wire pair.

[0066] like Figure 3A As shown, in the light emitting device 1000A, in the main surface 100a of the resin package 100, the first wires 11a, 11b, the second wires 12a, 12b and the third wires 13a, 13b are arranged, for example, along the y direction. In the main surface 100a, the ends of the two wires constituting each wire pair are separated from each other and arranged opposite to each other. The arrangement, shape, number of wires used for the light emitting device 1000A are not particularly limited. For example, the number of wires may be more than two. A common wire may be provided instead of the wires 11b, 12b, 13b. In addition, two or more light emitting elements 50 among the first light emitting element 51 to the third light emitting element 53 may also be connected to a common wire.

[0067] The wires 11a to 13b are composed of, for example, a substrate and a metal layer covering the surface of the substrate. The substrate includes, for example, copper, aluminum, gold, silver, iron, nickel or their alloys, phosphor bronze, iron-filled copper and other metals. These can be a single layer or a stacked structure (for example, a composite material). The metal layer is, for example, an electroplated layer. The metal layer includes, for example, silver, aluminum, nickel, palladium, rhodium, gold, copper or their alloys. By having such a metal layer in the wires 11a to 13b, it is possible to improve light reflectivity and / or bonding with the leads described later. For example, the wires 11a to 13b can use a wire having a silver-plated layer on the surface of a copper alloy.

[0068] [Light emitting element 50]

[0069] At least one light emitting element 50 is disposed in the exposed area 30 of the first area 20. Figure 3A In the example shown, the light emitting device 1000A includes a first light emitting element 51, a second light emitting element 52, and a third light emitting element 53. The first light emitting element 51 is arranged in the exposed area 30 of the wire 13a in the first region 21. The first light emitting element 51 is electrically connected to the wires 13a and 13b using the lead 83. The second light emitting element 52 is arranged in the exposed area 30 of the wire 11a in the first region 22. The second light emitting element 52 is electrically connected to the wires 11a and 11b using the lead 81. The third light emitting element 53 is arranged in the exposed area 30 of the wire 12a in the first region 23. The third light emitting element 53 is electrically connected to the wires 12a and 12b using the lead 82.

[0070] The shape of the light emitting element 50 in a plan view is, for example, a rectangle. The size of the light emitting element 50 is not particularly limited. The lengths of the light emitting element 50 in the longitudinal and lateral directions are, for example, 100 μm to 1000 μm. For example, the light emitting element 50 in a plan view has a square shape with a side of 320 μm.

[0071] The light-emitting element 50 includes a light-emitting element that emits light from the upper surface and the side. Here, the light-emitting element that emits light from the upper surface and the side refers to, for example, a light-emitting element having a translucent substrate and a light-emitting portion, and emitting light from the light-emitting portion through the translucent substrate. The light-emitting element 50 may also include a light-emitting element that actually emits light only from the upper surface. Here, the light-emitting element that actually emits light only from the upper surface refers to, for example, a light-emitting element that does not have a translucent substrate and does not emit light from the light-emitting portion through the translucent substrate. The light from the light-emitting element with a translucent substrate is not only easy to take out from the upper surface of the translucent substrate, but also easy to take out from the side. Therefore, the light-emitting element with a translucent substrate is easier to take out light from the side than the light-emitting element without a translucent substrate. For example, the first light-emitting element 51 and the third light-emitting element 53 are light-emitting elements that emit light from the upper surface and the side, and the second light-emitting element 52 is a light-emitting element that actually emits light only from the upper surface. In addition, all of the multiple light-emitting elements 50 can also emit light not only from the upper surface but also from the side.

[0072] exist Figure 3B In the example shown, the first light-emitting element 51 is arranged to be biased toward the +y direction side of the first region 21 in the top view. The center of the first light-emitting element 51 does not coincide with the center of the first region 21. The first light-emitting element 51 is a blue light-emitting element. The third light-emitting element 53 has the same arrangement relationship as the first light-emitting element 51. The third light-emitting element 53 is a green light-emitting element. The second light-emitting element 52 is arranged at the center of the first region 23 in the top view. The second light-emitting element 52 is a red light-emitting element.

[0073] In addition, the third light emitting element 53 may be a blue light emitting element that emits blue light, and the first light emitting element 51 may be a green light emitting element that emits green light. For example, a red light emitting element is a light emitting element that emits light with a wavelength in the range of 610 nm to 700 nm, a blue light emitting element is a light emitting element that emits light with a wavelength in the range of 430 nm to 490 nm, and a green light emitting element is a light emitting element that emits light with a wavelength in the range of 495 nm to 565 nm. The light emitting wavelength indicates the peak wavelength of light emitted from each light emitting element.

[0074] The emission wavelengths of the plurality of light emitting elements 50 are selected, for example, so that white light can be obtained when all the plurality of light emitting elements 50 are lit. In addition, full-color display can be performed by using a plurality of light emitting elements 50 that emit red light, blue light, and green light. The number of the plurality of light emitting elements 50 and the combination of the emission colors are an example and are not limited to this example. The emission wavelengths of the plurality of light emitting elements 50 may all be different, or may include light emitting elements 50 of the same emission wavelength.

[0075] As blue and green light emitting elements, ZnSe and nitride semiconductors (In X Yj Y 1-X- Y N, 0≤X, 0≤Y, X+Y≤1). For example, a light-emitting element having a semiconductor layer containing GaN formed on a supporting substrate such as sapphire can also be used. As a red light-emitting element, GaAs, AlInGaP, AlGaAs-based semiconductors, etc. can be used. For example, a light-emitting element having a semiconductor layer containing AlInGaP formed on a supporting substrate such as silicon, aluminum nitride, sapphire, etc. can also be used. In addition, light-emitting elements made of materials other than these can also be used. The composition, luminous color, size, number, etc. of the light-emitting element can be appropriately selected according to the purpose.

[0076] In addition, arbitrary light emission can be obtained by arranging a phosphor that converts the wavelength of light emitted by the light emitting element around the light emitting element composed of a nitride-based semiconductor or the like. “In the present specification, the “light-emitting element 50” includes not only a light-emitting element composed of a nitride-based semiconductor or the like, but also an element composed of a light-emitting element and a phosphor. Specifically, as the phosphor, yttrium / aluminum / garnet activated by cerium, lutetium / aluminum / garnet activated by cerium, nitrogen-containing calcium aluminum silicate activated by europium and / or chromium (a portion of the calcium may be replaced by strontium), aluminosilicate activated by europium, silicate activated by europium, strontium aluminate activated by europium, potassium fluoride silicate activated by manganese, and the like can be used. As an example, the first light-emitting element 51, the second light-emitting element 52, and the third light-emitting element 53 may all have a semiconductor chip that emits blue light. In this case, in at least two of the above-mentioned light-emitting elements, by arranging a phosphor around the semiconductor chip, the emission colors of the first light-emitting element 51, the second light-emitting element 52, and the third light-emitting element 53 can be made different from each other.

[0077] The first light emitting element 51 , the second light emitting element 52 , and the third light emitting element 53 can be bonded to the exposed region 30 of any of the plurality of wires 11 a to 13 b by bonding members such as resin, solder, and conductive paste.

[0078] like Figure 3A , 3B As shown, the first light emitting element 51 to the third light emitting element 53 are respectively arranged in the exposed area 30 of three different wires (here, the wires 11a, 12a, and 13a). As a result, the heat dissipation paths of the first light emitting element 51, the second light emitting element 52, and the third light emitting element 53 can be separated from each other, so that the heat generated by each light emitting element 50 can be efficiently dissipated.

[0079] exist Figure 3A , 3BIn the example shown, the lead 83 electrically connecting the first light emitting element 51 to the wires 13a and 13b and the lead 82 electrically connecting the third light emitting element 53 to the wires 12a and 12b are connected to the second region 26 (wire connection region). The lead 81 electrically connecting the second light emitting element 52 to the wires 11a and 11b is arranged in the first region 22.

[0080] Gold, silver, copper, platinum, aluminum or alloys thereof can be used as the wires 81 to 83. Among them, gold wires having excellent ductility and gold-silver alloy wires having a higher reflectivity than gold wires are preferred.

[0081] [Reflective member 150]

[0082] like Figure 3A As shown, in the top view, the reflective component 150 is arranged around the first light emitting element 51 and the third light emitting element 53. The reflective component 150 reflects the light emitted from the side of the first light emitting element 51 and the third light emitting element 53 and reflects it toward the +z direction of the light emitting element 50. Thus, the utilization efficiency of the light emitted from the first light emitting element 51 and the third light emitting element 53 can be improved.

[0083] In this specification, "the reflective component 150 is arranged around the first light-emitting element" means that the reflective component 150 is arranged close to the side of the first light-emitting element 51 in a top view. The reflective component 150 may be in direct contact with the side of the first light-emitting element 51, or may not be in contact. Preferably, the reflective component 150 is in contact with the side of the first light-emitting element 51. More preferably, the reflective component 150 surrounds the side of the first light-emitting element 51 in a top view. Preferably, the reflective component 150 is arranged in contact with all the side surfaces of the first light-emitting element 51. Thus, light emitted from the side of the first light-emitting element 51 can be reflected, and light is not easily emitted from the side of the first light-emitting element 51. Therefore, light is mainly emitted from the upper surface of the first light-emitting element 51. When the lens portion 70 is miniaturized, most of the light emitted from the side of the first light-emitting element 51 is totally reflected by the lens portion 70. Therefore, by reducing the light emitted from the side of the first light emitting element 51 by the reflective member 150 and emitting light mainly from the upper surface of the first light emitting element 51, it is possible to reduce the light totally reflected by the lens portion 70, and to miniaturize the lens portion 70. In addition, although the first light emitting element 51 is used for the description, the same is true for the third light emitting element 53.

[0084] In addition, the reflective component 150 is, for example, arranged in the first region 20 formed on the main surface 100a of the resin package 100. For example, the reflective component 150 may be arranged in the entire first region 20 in a manner that covers the bottom surface 20A and the inner side surface 20B of the first region 20. Therefore, in this case, the first region 20 does not have the function of reflecting the emitted light. Figure 3A As shown, the reflective component 150 may also be configured to overlap with the exposed area 30. The reflective component 150 may not be configured on the entire bottom surface 20A of the first area 20, but may expose a portion of the first area 20. Alternatively, for example, a first light-emitting element 51 and a third light-emitting element 53 whose sides are covered by the reflective component 150 may be prepared and configured. Thus, the area of ​​the region where the reflective component 150 is configured in the bottom surface 20A of the first area 20 can be reduced. By reducing the area of ​​the region where the reflective component 150 is configured, the reduction in contrast of the light-emitting device 1000A can be reduced. For example, the size of the reflective component 150 is preferably less than 25% of the size of the main surface 100a, more preferably less than 20%, and further preferably less than 15%.

[0085] By arranging the reflective members 152 and 153 , light from the side surfaces of the first light emitting element 51 and the third light emitting element 53 can be reflected, and the light can be emitted in the +z direction of the light emitting device 1000A.

[0086] The reflective component 150 is, for example, a reflective resin material. The reflective resin material includes a resin that becomes a base material and a light-reflecting substance dispersed in the resin. As the base material, a light-transmitting material such as epoxy resin, silicone resin, epoxy-modified silicone resin, a resin mixed with these, or glass can be used. From the viewpoint of light resistance and easy formability, epoxy-modified silicone is preferably selected as the base material.

[0087] As the light reflective material, titanium oxide, silicon oxide, zirconium oxide, yttrium oxide, yttrium-stabilized zirconium oxide, potassium titanate, aluminum oxide, aluminum nitride, boron nitride, mullite, etc. can be used. In the present embodiment, titanium oxide is used, for example. The concentration of the light reflective material in the reflective component 150 is preferably not less than 10% by mass and not more than 80% by mass. The reflective component 150 preferably contains titanium oxide as a light reflective material. In addition, the reflective component 150 may also contain glass fillers, etc., in order to reduce the expansion and contraction of the resin of the base material due to heat. The concentration of the glass filler is preferably greater than 0% by mass and less than 40% by mass. In addition, the concentration of the light reflective material, glass filler, etc. is not limited to this.

[0088] The reflective member 150 may be any member that reflects the light emitted from the light emitting element 50. It is preferred that the reflective member 150 use a material having a reflectivity of 80% or more with respect to the light of the peak wavelength emitted from the light emitting element 50. In addition, for example, as the reflective member 150, a single layer or multilayer film made of metal, or a multilayer film (dielectric multilayer film) in which two or more dielectrics are stacked can be used. As the dielectric multilayer film, for example, a DBR (distributed Bragg reflector) film can be used.

[0089] A light-transmitting resin component having light transmission may also be provided between the reflective component 150 and the light-emitting element 50 and the molded resin portion 60. For example, the light-transmitting resin component is disposed between the inner side surfaces 20D facing each other in the cross-sectional view. Preferably, the light-transmitting resin component covers the second inner side surface 20D2 exposed from the light-absorbing component 190. The same material as the molded resin portion 60 may be used as the material of the light-transmitting resin component. The light-transmitting resin component may contain a colorant. By overlapping the light-transmitting resin component containing a colorant with the reflective component 150, the contrast may be further improved.

[0090] [Lens section 70]

[0091] The lens portion 70 has a light distribution function of controlling the direction and distribution of emitted light.

[0092] The lens portion 70 may be provided in single or multiple configurations. Figure 3A In the example shown, the light emitting device 1000A has a plurality of lens portions 70. The plurality of lens portions 70 include, in the top view, a third lens portion 73 overlapping the first light emitting element 51, a first lens portion 71 overlapping the second light emitting element 52, and a second lens portion 72 overlapping the third light emitting element 53. By having the lens portion 70, the light emitting device 1000A can be provided with a high light distribution in the +z direction. The lens portion 70 is sometimes simply referred to as a "lens". The lens portion 70 may be integrated with the base portion 61 or may be independent.

[0093] like Figure 2A , 2B As shown in FIG. 1 , each of the plurality of lens portions 70 has a convex shape protruding upward from the upper surface 61a of the base portion 61. The top view shape of each lens portion 70 is, for example, an ellipse or a circle. In addition, in this specification, an ellipse or a circle is not limited to a geometrically accurate ellipse or a circle, and includes shapes similar to an ellipse or a circle. Figure 3A As shown, the top view shape of each lens portion 70 is an ellipse, the major axis of the ellipse extends along the x direction, and the minor axis extends along the y direction. Therefore, a light distribution that is wide along the x direction and narrow along the y direction can be obtained. The light-emitting device 1000A having such a light distribution can be particularly suitable for use in display devices such as LED displays. In addition, in the side view observed from the x direction or the y direction, the outer edge of the lens portion 70 may be only an elliptical arc or an arc-shaped curved portion, or may have a straight line portion in addition to an elliptical arc or an arc-shaped curved portion. The straight line portion may also be located between the curved portion and the upper surface 61a of the base portion 61. For example, the lens portion 70 may also have a shape in which a part of a sphere (for example, a hemisphere) is arranged on a truncated cone, a shape in which a part of an ellipsoid is arranged on an elliptical cone, and the like.

[0094] Each of the plurality of lens portions 70 is arranged to correspond to one of the light emitting elements 50. The optical axis of each lens portion 70 coincides with the center (the center of the light emitting surface) of the corresponding light emitting element 50. Thus, the controllability of the light distribution of the light emitting device 1000A can be further improved. In addition, the optical axis of each lens portion 70 may not coincide with the center of the corresponding light emitting element 50.

[0095] For example, in a side view of the light emitting device 1000A observed from the x direction or the y direction, the lens portion 70 has a shape that passes through the vertex of the lens portion 70 and is line symmetrical with respect to a straight line L1 parallel to the z axis. The centers CL1 to CL3 of each lens portion 70 described later are located on the straight line L1. The straight line L1 coincides with the optical axis of the lens portion 70. In addition, the vertex of the lens portion 70 and the center of the light emitting element 50 are located on the same straight line parallel to the z axis direction. In addition, the curvature of the lens portion 70 can be appropriately selected. For example, the lens portion 70 may have different curvatures with the vertex of the lens portion 70 as a boundary, or may have the same curvature.

[0096] The shape and arrangement of each lens portion 70 in a plan view can be appropriately selected in consideration of light distribution, light focusing, etc. The cross-sectional shape of the lens portion is not limited to a convex shape. The lens portion may be, for example, a concave shape or a Fresnel lens.

[0097] In this embodiment, the first light generated by the first light emitting element 51 passes through the third lens portion 73 and is emitted in the +z direction of the light emitting device 1000A. The direction and distribution of the first light emission are controlled by the third lens portion 73. Similarly, the second light generated by the second light emitting element 52 passes through the first lens portion 71, and the third light generated by the third light emitting element 53 passes through the second lens portion 72. The first lens portion 71 and the second lens portion 72 control the light distribution of the second light and the third light, respectively.

[0098] When the first light emitting element 51 , the second light emitting element 52 , and the third light emitting element 53 are turned on, the light transmitted through the third lens portion 73 , the first lens portion 71 , and the second lens portion 72 can be displayed in full color using, for example, three primary colors of light.

[0099] In the example shown in Fig. 2C, in the top view, the first lens portion 71, the second lens portion 72 and the third lens portion 73 are arranged along the y direction. In the top view, the centers of the first lens portion 71 to the third lens portion 73 may also be located in a straight line parallel to the y axis. In addition, the configuration of the lens portion 70 is not limited to this example. For example, in the first lens portion 71, the second lens portion 72 and the third lens portion 73, the center of the lens portion located in the center in the x direction or the y direction may not be located on the line connecting the centers of the other two lens portions.

[0100] The lens portion 70 includes a base material having light transmissivity. The lens portion 70 preferably has a light transmittance of 90% or more at the peak wavelength of each of the plurality of light emitting elements 50. This can further improve the light extraction efficiency of the light emitting device 1000A.

[0101] As the base material of the lens portion 70 , it is preferable to use a thermosetting resin having excellent durability and light transmittance, such as epoxy resin, urea resin, silicone resin, epoxy-modified silicone resin, or silicone resin, or glass.

[0102] The lens portion 70 of this embodiment may also include a light diffusion material in order to improve the uniformity of the light quality of the light emitting device 1000A. By including the light diffusion material in the lens portion 70, it is possible to suppress uneven light intensity by diffusing the light emitted from the light emitting element 50. As such a light diffusion material, inorganic components such as barium oxide, barium titanate, silicon oxide, titanium oxide, and aluminum oxide, and organic components such as melamine resin, CTU guanamine resin, and benzoguanamine resin are preferably used.

[0103] The lens portion 70 may also contain various fillers. The specific material is the same as that of the light diffusion material, but the core particle diameter (D 50 ) is different from the light diffusion material. In this specification, filler refers to a filler with a central particle diameter of 100nm or more and 100μm or less. If a filler with such a particle diameter is contained in the light-transmitting resin, in addition to improving the color deviation of the light-emitting device 1000A through light scattering, it can also improve the heat shock resistance of the light-transmitting resin or relieve the internal stress of the resin.

[0104] Figure 3A The first and third light emitting elements 51 and 53 of the three light emitting elements 50 (51, 52, 53) of the light emitting device 1000A shown emit light from the upper surface and the side surface. Therefore, reflective members 150 (152, 153) are arranged around the first and third light emitting elements 51 and 53.

[0105] Here, attention is paid to the configuration relationship between the first light emitting element 51, the lens portion 73 overlapping with the first light emitting element 51, and the reflective component 153 arranged around the first light emitting element 51. The shape of the lens portion 73 in the top view is an ellipse having a major axis LA3 and a minor axis SA3 in the x direction and the y direction orthogonal to the x direction, respectively. In the top view, in the region overlapping with the lens portion 73, the reflective component 153 has a larger area on the -y direction side of the major axis LA3 than the area of ​​the part on the +y direction side of the major axis LA3. For example, in the case of looking up at a display device used outdoors from below, the direction of observing the light emitting device 1000A is sometimes tilted, for example, in the -y direction. At this time, the +y direction of the first light emitting element 51 is recognized through the lens portion 73. Therefore, by making the area of ​​the part on the +y direction side of the major axis LA3 smaller than the area of ​​the part on the -y direction side of the major axis LA3, it is difficult to recognize the reflective component 153 on the +y direction side. Thus, the reduction in contrast of the outdoor light emitting device 1000A can be reduced. In addition, when the lens portion 70 is circular, the area of ​​the reflective component existing on the +y direction side from the center of the lens portion 70 in the top view is compared with the area of ​​the reflective component existing on the -y direction side from the center of the lens portion 70 in the top view. Preferably, in the top view, the total length of the region where the reflective component 153 overlaps with the lens portion 73 on the major axis LA3 is smaller than the total length on the minor axis SA3. By making the total length on the major axis LA3 smaller than the total length on the minor axis SA3, the reflective component 153 can be magnified and recognized through the lens portion 73, and the contrast of the light emitting device 1000A can be further improved.

[0106] The length of the reflective component 153 in the x direction (first direction) is smaller than the length of the long axis LA3 of the lens portion 73, the center of the first light emitting element 51 coincides with the center CL3 of the lens portion 73, the center CR3 of the reflective component 153 deviates from the center CL3 of the lens portion 73 in the y direction (second direction), and the center CR3 of the reflective component 153 overlaps with the lens portion 73. Here, the center is the geometric center of gravity in the top view. For example, the reflective component 153 is the geometric center of gravity in the top view of the first region 20. Figure 3A In the example shown, the center CL3 of the lens portion 73 is located at the intersection of the major axis LA3 and the minor axis SA3. The length of the reflective component 153 in the y direction (second direction) may be longer than the length of the minor axis SA3 of the lens portion 73. In addition, the length of the reflective component 153 in the x direction (first direction) may be shorter than the length in the y direction (second direction).

[0107] Next, the configuration relationship between the third light emitting element 53, the lens portion 72 overlapping the third light emitting element 53, and the reflective member 152 disposed around the third light emitting element 53 is focused. The shape of the lens portion 72 in the top view is an ellipse having a major axis LA2 and a minor axis SA2 in the x direction and the y direction orthogonal to the x direction, respectively. In the top view, the reflective member 152 in the region overlapping the lens portion 72 has a larger area on the -y direction side of the major axis LA2 than on the +y direction side of the major axis LA2. Thus, the reduction in contrast of the outdoor light emitting device 1000A can be reduced.

[0108] The length of the reflective component 152 in the x direction (first direction) is shorter than the length of the long axis LA2 of the lens portion 72, the center of the third light emitting element 53 coincides with the center CL2 of the lens portion 72, the center CR2 of the reflective component 152 deviates from the center CL2 of the lens portion 72 in the y direction (second direction), and the center CR2 of the reflective component 152 overlaps with the lens portion 72. Thus, the situation where the reflective component 152 is magnified and recognized through the lens portion 72 can be reduced, and the contrast of the light emitting device 1000A can be further improved.

[0109] Among the three light emitting elements 50 included in the light emitting device 1000A, the second light emitting element 52 emits light only from the upper surface. Therefore, the reflective component 150 may not be arranged around the second light emitting element 52. Preferably, the light absorbing component 190 is arranged around the second light emitting element 52. By arranging the light absorbing component 190, the reflection of the wires 11a and 11b can be reduced, so the reduction in contrast can be reduced. The light absorbing component 190 is arranged so that the wires 11a and 11b are at least difficult to be recognized, and more preferably, it is arranged so that the wires 11a and 11b cannot be recognized. For example, the light absorbing component 190 is arranged to cover the bottom surface 20C of the first region 20 and at least a part of the first inner side surface 20D1. The light absorbing component 190 may also cover the entire first inner side surface 20D1, a part or the entire step surface 20DS, and a part of the second inner side surface 20D2. The light absorbing component 190 can use the same resin material and colorant as the resin component 40. For example, the light absorbing member 190 can be made of a resin material obtained by adding a glass filler colored by carbon black to an epoxy resin-modified silicone resin material. The amount of the colored glass filler relative to the resin material as the base material is, for example, 1% by mass or more and 5% by mass or less, preferably 2% by mass or more and 4% by mass or less. The light absorbing member 190 is the same as the dark-colored resin member 40, and has a lightness of 4.0 or less and a chroma of 4.0 or less in the Munsell color system (20 hues).

[0110] The center of the second light emitting element 52 coincides with the center CL1 of the lens portion 71 . In addition, the center of the light absorbing member 190 also coincides with the center CL1 of the lens portion 71 .

[0111] exist Figure 3A , 3B In the example shown, the light absorbing member 160 is disposed in the second region 26. The light absorbing member 160 can reduce reflection of the conductive wires 12a to 13b. The light absorbing member 160 can be made of the same material as that of the light absorbing member 190.

[0112] The light emitting device 1000A has a plurality of protrusions 47 arranged in the second region 26 in a top view. The protrusions 47 are a part of the resin component 40 of the resin package 100. The protrusions 47 are arranged away from the inner side surface that divides the second region 26. In addition, the plurality of protrusions 47 are arranged away from each other. The upper surface of the light emitting element 50 is located above the upper surface of each protrusion 47. The height of the upper surface of the protrusion 47 may be the same as or different from the height of the upper surface of the inner side surface of the first region 20.

[0113] At least a portion of the side surface of each convex portion 47 is in contact with the light absorbing member 160. Figure 3A As shown, by arranging the projections 47, the light absorbing member 160 has a plurality of holes corresponding to the projections 47. The upper surface of each projection 47 is exposed from the light absorbing member 160. The upper surface of each projection 47 may be covered by the light absorbing member 160 or may not be covered.

[0114] The light absorbing member 160 can be arranged in the second region 26 except for the region where the protrusion 47 is arranged. As a result, the volume of the light absorbing member 160 can be reduced. Therefore, the influence of stress generated during the manufacture or installation of the light emitting device 1000A can be reduced. For example, the stress applied to the joint portion between the lead and the wire due to the volume change of the light absorbing member 160 can be reduced.

[0115] In the plan view, each convex portion 47 is preferably arranged so that a portion thereof overlaps with the corresponding wire. This can increase the contact area between the wires 12a to 13b and the resin member 40 in the resin package 100. In addition, in the light emitting device 1000A, the convex portion 47 can be omitted. If the convex portion 47 is omitted, it is easy to arrange the light absorbing member in the second region 26.

[0116] exist Figure 2A , 2BIn the example shown, the molded resin portion 60 further includes a base portion 61. The base portion 61 seals the light emitting element 50. The base portion 61 includes an upper surface 61a and a side portion 61b of the base portion 61. The upper surface 61a is located above the main surface 100a of the resin package 100. The upper surface 61a is a surface including a starting point where the lens portion 70 is formed. The side portion 61b covers a portion of the outer portion 100c of the resin package 100 in a direction from the upper surface 61a of the base portion 61 toward the back surface 100b of the resin package 100. The side portion 61b continuously covers a portion of the outer portion 100c of the conductive resin package 100 from the upper surface 61a of the base portion 61. For example, it is preferable that the lowest end of the base portion 61 located in the -z direction is located above the portion where the plurality of conductive wires 11a to 13b of the outer portion 100c are exposed, and the molded resin portion 60 and the plurality of conductive wires 11a to 13b are not in direct contact. Thus, a part of the mold resin portion 60 is not arranged to partially cover the mounting surface of the lead wires 11a to 13b. Therefore, it is possible to reduce the reduction in the mounting surface area by the mold resin portion 60. The lens portion 70 and the base portion 61 can be made of the same material.

[0117] like Figure 2A As shown, in this specification, in the side view of the main surface 100a observed from the Y direction, the outermost point P of the upper surface 61a of the base portion 61 is called the "first point", the outermost point Q of the side portion 61b of the base portion 61 is called the "second point", and the outermost point R where the outer portion 100c of the resin package 100 and the side portion 61b of the base portion 61 are in contact is called the "third point".

[0118] The first point P is located closer to the lens portion 70 than the second point Q, and the second point Q is located outside the third point R. The second point Q is located outside the first point P. The third point R may be located inside or outside the first point P.

[0119] like Figure 2AAs shown in FIG. 2 and FIG. 3 , a portion of the side surface 61b of the base portion 61 from the first point P to the second point Q has a base step surface 62. The side surface 61b of the base portion 61 has a first inclined surface 63a that connects point P with the base step surface 62, and a second inclined surface 63b that connects the base step surface 62 with point Q. The height of the main surface 100a of the resin package 100 is lower than the height of the upper surface 61a of the base portion 61, and higher than the height of the base step surface 62. The base step surface 62 is located below the main surface 100a of the resin package 100. The base step surface 62 is arranged over the periphery of the base portion 61. The first inclined surface 63a and the second inclined surface 63b are inclined relative to the back surface 100b. For example, the angle formed by the first inclined surface 63a and the xy plane is, for example, not less than 5° and not more than 45°. For example, the angle formed by the second inclined surface 63b and the xy plane is, for example, not less than 5° and not more than 45°. The angle between the first inclined surface 63a and the xy plane and the angle between the second inclined surface 63b and the xy plane may be the same angle or different. In addition, the portion between the first point P and the second point Q in the side surface 61b of the base portion 61 may be a straight line (i.e., a line segment connecting the first point P and the second point Q).

[0120] The portion of the side surface portion 61b of the base portion 61 extending from the second point Q to the third point R is curved in a concave shape. Figure 2A As shown in FIG. 1 , the portion of the outer side surface of the side surface portion 61b of the base portion 61 between the second point Q and the third point R is entirely curved in a convex shape toward the outer side portion 100c of the resin package 100. Thus, it is possible to more effectively reduce the situation where the waterproof resin disposed on the side surface of the light emitting device 1000 climbs from the back surface 100b of the resin package 100 to the upper surface 61a of the base portion 61.

[0121] The surface roughness of the base portion 61 is not particularly limited, but a larger surface roughness that reduces the glare of the upper surface 61a of the base portion 61 is preferred. Preferably, in the upper surface 61a of the base portion 61, the surface roughness of at least the portion overlapping with the reflective component 150 in a top view is greater than the surface roughness of the lens portion 70. Thus, the contrast of the light-emitting device 1000A can be further improved. In the upper surface 61a of the base portion 61, the surface roughness of the portion that does not overlap with the plurality of lens portions 70 in a top view is greater than the surface roughness of the lens portion 70. By increasing the surface roughness of the base portion 61, external light such as sunlight can be scattered on the surface of the base portion 61, and the reflection intensity can be suppressed. Thus, the light-emitting device 1000A can be less likely to suffer from a reduction in contrast caused by reflection of external light. Preferably, in the upper surface 61a of the base portion 61, at least the portion overlapping with the reflective component 150 in a top view is roughened. That is, the base portion 61 is roughened, and the portion of the upper surface 61a of the base portion 61 that overlaps with the reflective component 150 is matte. Preferably, in the upper surface 61a of the base portion 61, the portion that does not overlap with the plurality of lens portions 70 in the top view is roughened. The first inclined surface 63a and the second inclined surface 63b of the side surface 61b of the base portion 61 may be roughened or not. For example, the region of the upper surface 61a of the base portion 61 around the plurality of lens portions 70 is roughened, and the base step surface 62, the first inclined surface 63a, and the second inclined surface 63b are not roughened. In addition, for example, the region of the upper surface 61a of the base portion 61 around the plurality of lens portions 70 and the base step surface 62 are roughened, and the first inclined surface 63a and the second inclined surface 63b are not roughened. The surface roughness of the upper surface 61a and the surface roughness of the outer surface of the side surface 61b may be the same or different. From the perspective of ease of processing, it is preferred that the surface roughness of the upper surface 61 a and the outer surface of the side surface portion 61 b ​​be the same.

[0122] Preferably, the arithmetic mean roughness Ra of the upper surface 61a of the base portion 61 is 0.4 μm or more and 5 μm or less. More preferably, Ra is 0.8 μm or more and 3 μm or less. Ra of the outer surface of the side portion 61b of the base portion 61 may also be in the same range as above. Ra can be measured based on the surface roughness measurement method of JIS B 0601-2001. Specifically, Ra is expressed by the following formula when a portion of a measured length L is extracted from a roughness curve along the direction of the center line, and the center line of the extracted portion is set as the X-axis, the direction of the longitudinal magnification is set as the Y-axis, and the roughness curve is set as y=f(x).

[0123] [Mathematical formula 1]

[0124]

[0125] Ra can be measured using a contact-type surface roughness measuring machine, a laser microscope, etc. In this specification, a laser microscope VK-250 manufactured by Keyence is used.

[0126] The roughened upper surface 61 of the base portion 61 may be a surface having stripe-shaped concavities and convexities or a surface having dot-shaped concavities and convexities (a pear surface). For example, the stripe-shaped concavities and convexities extend in the x direction or the y direction.

[0127] It is preferable that the base portion 61 has a light transmittance of 90% or more at the peak wavelength of each of the plurality of light emitting elements 50. This can further improve the light extraction efficiency of the light emitting device 1000A.

[0128] Next, refer to Figures 4 to 7A , Figure 7B The light emitting devices 1000B to 1000E according to other embodiments of the present invention are described below. The light emitting devices 1000B to 1000E basically have the same arrangement relationship of the first light emitting element 51, the lens portion 73 overlapping the first light emitting element 51, and the reflective member 153 arranged around the first light emitting element 51 as the light emitting device 1000A. In addition, the arrangement relationship of the third light emitting element 53, the lens portion 72 overlapping the third light emitting element 53, and the reflective member 152 arranged around the third light emitting element 53 of the light emitting devices 1000B to 1000E also basically has the same structure as the light emitting device 1000A. Therefore, the light emitting devices 1000B to 1000E can obtain the same effect as the light emitting device 1000A. The light emitting devices 1000B to 1000E basically have the same second light emitting element 52 and the light absorbing member 190 arranged around the second light emitting element 52 as the light emitting device 1000A. The following description will focus on the differences from the light emitting device 1000A.

[0129] Figure 4 This is a schematic top view of a light emitting device 1000B according to an embodiment of the present invention. Figure 5 This is a schematic top view of a light emitting device 1000C according to an embodiment of the present invention. Figure 6 This is a schematic top view of a light emitting device 1000D according to an embodiment of the present invention. Fig. 7A This is a schematic top view of a light emitting device 1000E according to an embodiment of the present invention. Figure 7B This is a schematic plan view of a resin package 100 of a light emitting device 1000F according to an embodiment of the present invention.

[0130] Figure 4The light emitting device 1000B shown is different from the light emitting device 1000A in that the reflective component 150 has connecting portions 154 and 155. The connecting portion 154 connects the reflective component 152 and the reflective component 153. The connecting portion 154 is integrally configured with the reflective component 152 and the reflective component 153. The connecting portion 155 connects the reflective component 152 and the light absorbing component 192. The connecting portion 155 may be a part of the light absorbing component 190, a part of the reflective component 150, or a part of both the light absorbing component 190 and the reflective component 150. The contact portion between the reflective component 150 and the light absorbing component 190 may have a recognizable boundary without mixing the respective materials, or may have a boundary that is difficult to recognize due to the overlap of the respective materials. Figure 4 In the example shown, the connecting portion 155 is a light absorbing member 192 . Figure 3A The light emitting device 1000A shown in the figure has the first regions 20 arranged one by one with respect to the lens portions 71 to 73. Figure 4 The light emitting device 1000B shown has a first region 200B arranged along the y direction relative to the lens portions 71 to 73. The reflective member 153, the connecting portion 154, the reflective member 152, the connecting portion 155, and the light absorbing member 192 are arranged in the first region 200B. The first light emitting element 51, the second light emitting element 52, and the third light emitting element 53 are arranged in the first region 200B. In the top view, the first light emitting element 51 is arranged in a manner away from the connecting portion 154 and deviates in the +y direction. In addition, the second light emitting element 52 is arranged in a manner away from the connecting portion 154 and deviates in the -y direction. In addition, the third light emitting element 53 is arranged in a manner away from the connecting portion 155 and deviates in the connecting portion 154. In addition, the length of the first region 200B in the X direction where the light emitting element 50 is arranged is greater than the length of the first region 200B in the X direction where the connecting portions 154 and 155 are arranged. The length of the connecting portion 154 in the x direction is smaller than the length of the reflective member 152 and the reflective member 153 in the x direction. Thus, in the top view, the light emitting device 1000B can reduce the area of ​​the reflective member 150 arranged on the main surface 100a, compared with the case where the connecting portion 154 has the same length as the reflective member 152 and the reflective member 153. Therefore, the contrast of the light emitting device 1000B can be further improved. The length of the connecting portions 154 and 155 in the x direction is smaller than the length of the first region 200B in the x direction. The connecting portions 154 and 155 are portions narrower than the width of the first region 200B where the light emitting element 50 is arranged.

[0131] In addition, the light-emitting device 1000B is different from the light-emitting device 1000A in that a plurality of exposed areas 30 are arranged in one second area 260B. Leads 81 to 83 connected to the first light-emitting element 51, the second light-emitting element 52, and the third light-emitting element 53 are arranged in the second area 260B, respectively. The second area 260B extends in the y direction. Thus, the nozzle can be arranged at a position away from the leads. Therefore, it is not easy for the nozzle to contact the leads 81 to 83. Figure 4 As shown, the first region 200B is disposed between two second regions 260B. The light absorbing member 160 is disposed in the second region 260B.

[0132] Furthermore, the light emitting device 1000B is different from the light emitting device 1000A in that it has eight protrusions 47. Figure 4 In the example shown, four convex portions 47 are arranged in the +y direction and four convex portions are arranged in the -y direction from the long axis LA2 of the lens portion 72. The convex portions 47 do not overlap with the light emitting element 50 in the x direction.

[0133] Figure 5 The light-emitting device 1000C shown is different from the light-emitting device 1000A in that a pair of second regions 260C are configured to correspond to the first region 200C of the first light-emitting element 51 and the third light-emitting element 53. In the top view, the pair of second regions 260C are configured to be separated from each other. The second regions 260C are respectively configured with light-absorbing components 162 and 163. In the y direction, a resin component 40 is arranged between the second region 260C of the first light-emitting element 51 and the second region 260C of the third light-emitting element 53. Thus, light can be absorbed stably. This is because the deviation of the light absorption rate of the resin component 40 is smaller than that of the light-absorbing component 162. In addition, the light-emitting device 1000C is different from the light-emitting device 1000A in that a recess 170 is arranged between the light-absorbing component 162 and the light-absorbing component 163 and between the light-absorbing component 162 and the light-absorbing component 190. A portion of the resin package 100 of the recess 170 is recessed toward the -z direction. In the Figure 5 In the example shown, a plurality of recesses 170 are provided. The shapes of the plurality of recesses 170 are, for example, V-shaped, U-shaped, a trapezoid with a lower base shorter than an upper base, or a semicircle. By arranging the molded resin portion 60 in the recess 170, the close contact between the resin package 100 and the molded resin portion 60 can be improved.

[0134] Figure 6 The light emitting device 1000D shown does not have Figure 4The light emitting device 1000B shown in FIG. 1 is different from the light emitting device 1000B in that the connecting portion 155 is arranged away from the reflective component 152. The light absorbing component 192 is arranged away from the reflective component 152. The light emitting device 1000D has a first region 200D1 in which the first light emitting element 51 and the third light emitting element 53 are arranged; and a second region 200D2 in which the second light emitting element 52 is arranged. One of the first regions 200D1 is arranged along the y direction corresponding to the lens portions 72 and 73. In the second region 200D2, the second light emitting element 52 is arranged in a direction biased toward the -y direction. The reflective component 150 is arranged in the first region 200D1. The light absorbing component 192 is arranged in the second region 200D2. In the top view, only the resin component 40 is arranged between the reflective component 152 and the light absorbing component 190. When the resin component 40 is a dark-colored resin, it can absorb light stably. This is because the light absorption rate of the resin component 40 has a smaller deviation than that of the light absorbing component 162.

[0135] Fig. 7A The light emitting device 1000E shown in the figure is different from the light emitting device 1000E in that it has a connecting portion 154 connecting the reflective member 152 and the reflective member 153. Figure 3A The light emitting device 1000A shown is different. In the plan view, the resin member 40 is arranged between the reflective member 152 and the light absorbing member 190. When the resin member 40 is a dark-colored resin, it can absorb light stably. This is because the light absorption rate of the resin member 40 has less variation than that of the light absorbing member 162.

[0136] exist Figure 7B 1 is a schematic plan view of a resin package 100 of a light emitting device 1000F according to an embodiment of the present invention. Figure 7B The light emitting device 1000F also has Figure 3B The light emitting device 1000A shown in the figure is different from the light emitting device 1000A in that the first region 21 corresponding to the lens portion 73 and the connection region 24 connected to the first region 23 corresponding to the lens portion 72 are provided. The reflective member 150 is arranged in the first region 21, the first region 23 and the connection region 24. Therefore, in the light emitting device 1000F, Fig. 7A In the light emitting device 1000E shown, the reflective member 153 , the reflective member 152 , and the reflective member 150 corresponding to the connecting portion 154 connecting the reflective member 153 and the reflective member 152 are formed in the first region 21 , the first region 23 , and the connecting region 24 , respectively. Fig. 7A In the light emitting device 1000E shown, the length of the connecting portion 154 in the x direction is shorter than the lengths of the reflective member 153 and the reflective member 152 in the x direction. Figure 7BThe light emitting device 1000F shown has a reflective component 150 formed in the connection region 24, and the length of the reflective component 150 in the x direction is equal to the length of the reflective component 150 formed in the first region 21 and the first region 23. The light emitting device 1000F can configure the nozzle of the dispenser between the first light emitting element 51 and the third light emitting element 53. Therefore, the reflective component 150 is simultaneously arranged around the first light emitting element 51 and around the third light emitting element 53. Therefore, in the light emitting device 1000F, the manufacturing process can be simplified. In addition, the light emitting device 1000F can continuously configure the reflective component 150 containing the light reflective material from the periphery of the first light emitting element 51 to the periphery of the third light emitting element 53, so that the heat dissipation can be improved. This is because the thermal conductivity of the reflective component 150 is higher than that of the resin component 40. For example, the heat generated by the first light emitting element 51 can be dissipated not only through the wire configured for the first light emitting element 51 but also through the light reflective material contained in the reflective component 150 and the wire configured for the third light emitting element 53 which is continuous via the reflective component 150 .

[0137] exist Figure 7B In the embodiment, the arrangement relationship between the first light emitting element 51, the lens portion 73 overlapping the first light emitting element 51, and the reflective member 153 arranged around the first light emitting element 51 is the same as Figure 3A The light emitting device 1000A shown in FIG. 1 is the same as the light emitting device 1000A shown in FIG. 1. Thus, the light emitted from the first light emitting element 51 can be effectively utilized. For example, the luminosity of the first light emitting element 51 emitting blue light is lower than that of red and green. Therefore, by reducing the reduction in the contrast of the first light emitting element 51 emitting blue light, the reduction in the contrast of the light emitting device 1000A can be reduced. The configuration relationship of the third light emitting element 53, the lens portion 72 overlapping with the third light emitting element 53, and the reflective component 152 arranged around the third light emitting element 53 is different from that of the light emitting device 1000A. In the top view, the reflective component 152, in the region overlapping with the lens portion 72, is smaller in area than the area of ​​the portion existing on the +y direction side of the major axis LA2.

[0138] exist Fig. 7A In the light emitting device 1000E shown in FIG. 1 , one side of the first light emitting element 51 and one side of the second light emitting element 52 are approximately square and form an angle of 45° with respect to the x-axis, and one side of the third light emitting element 53 is arranged parallel to the x-axis. Figure 7BIn the light emitting device 1000F shown, one side of the first light emitting element 51, one side of the second light emitting element 52, and one side of the third light emitting element 53 are arranged to form an angle of 45° with respect to the x-axis. Alternatively, only one side of the first light emitting element 51 and the third light emitting element 53 may be arranged to form an angle of 45° with respect to the x-axis. The first light emitting element 51 and the third light emitting element 53 are, for example, a blue LED chip and a green LED chip.

[0139] As exemplified above, the light emitting devices according to the embodiments of the present invention can be modified in various ways and can be combined in various ways.

[0140] like Fig. 8A As shown, the main surface 100a of the resin package 100 has a first region 200B. The first region 200B has a recess 28 between the third light emitting element 53 and the second light emitting element 52. The recess 28 is more recessed than the region where the third light emitting element 53 is arranged and the region where the second light emitting element 52 is arranged. The first region 200B is provided with the third light emitting element 53 in the exposed region 32. The third light emitting element 53 is arranged closer to the connecting portion 154 than the connecting portion 155. In addition, the second light emitting element 52 is arranged in the exposed region 31. The second light emitting element 52 is arranged closer to the -y direction side of the first region 200B.

[0141] like Figure 8B As shown, the reflective resin material is arranged near the nozzle (not shown) of the dispenser at the position indicated by the dotted circle in the figure. The reflective resin material surrounds the third light-emitting element 53 as shown by the arrow in the figure. Thus, the reflective component 152 can be formed. In addition, the excess reflective resin material can stay in the recess 28, or it can exceed the recess 28 and be arranged on the side of the second light-emitting element 52. By arranging the third light-emitting element 53 toward the connecting portion 154, the lower side (-y direction) of the third light-emitting element 53 can be extended. Therefore, the nozzle of the dispenser can be arranged closer to the main surface 100a to arrange the reflective resin material.

[0142] Next, if Figure 8C As shown, a light absorbing resin material is arranged in the first region 200B. The light absorbing resin material surrounds the second light emitting element 52. Thus, the light absorbing member 192 and the connecting portion 155 can be formed. The light absorbing material is arranged to overlap with the reflective resin material arranged in the recess 28. The light absorbing material may be arranged to the third light emitting element 53 side beyond the recess 28 as long as it does not overlap with the upper surface of the third light emitting element 53.

[0143] Next, refer to Fig. 9 as well as Fig.10 The display device 2000 of the present invention is described below. The display device 2000 can be applied to display devices such as outdoor displays, for example. Fig. 9 is a schematic top view of a display device 2000 according to an embodiment of the present invention. Fig.10 FIG. 2 is a schematic partial cross-sectional view of the display device 2000 .

[0144] like Fig. 9 As shown, the display device 2000 has a plurality of light emitting devices 1000A arranged in a matrix having rows and columns. Each light emitting device 1000A constitutes a color display pixel. The light emitting device of the present invention may be used instead of the light emitting device 1000A. The plurality of light emitting devices 1000A are arranged to form rows along the x direction and columns along the y direction. Fig. 9 As shown, the light emitting device 1000A is arranged in the order of the first light emitting element 51, the third light emitting element 53, and the second light emitting element 52 from the +y direction to the -y direction. Here, it is preferred that the first light emitting element 51 emits blue light, the third light emitting element 53 emits green light, and the second light emitting element 52 emits red light. When directly visually confirming a plurality of light emitting devices 1000A, even if the amount of light is the same, the visual sensitivity of green is higher than that of blue and red, so green looks bright. Therefore, by arranging the third light emitting element 53 emitting green light in the center, the color mixing property of the light emitting device 1000A can be improved. In addition, by arranging the first light emitting element 51 emitting blue light near the blinds that block external light, the progress of resin degradation can be reduced by light other than the light generated by the light emitting element 50, that is, external light. The resin used in the light emitting device 1000A may be degraded by light of short wavelength. Resin degradation is likely to occur near the first light emitting element 51 that emits blue light with the shortest emission wavelength. Therefore, by shielding external light incident near the first light emitting element 51 emitting blue light, the progress of resin degradation can be reduced. In addition, due to the above-mentioned effects of the light emitting device 1000A, the display device 2000 can display with high contrast.

[0145] like Fig.10 As shown, the display device 2000 includes a plurality of light emitting devices 1000A, a substrate 1 such as a printed circuit board on which the plurality of light emitting devices 1000A are arranged in a two-dimensional manner, and a waterproof resin 3. The waterproof resin 3 is configured to cover the side surfaces of the plurality of light emitting devices 1000A. The uppermost end of the portion of the waterproof resin 3 that contacts the outer side surface of the molded resin portion 60 may be (1) the position of the second point Q, (2) any position between the second point Q and the third point R on the outer side surface of the side surface portion 61b of the base portion 61, or (3) any position between the first point P and the second point Q on the outer side surface of the side surface portion 61b of the base portion 61. The waterproof resin 3 may be made of, for example, silicone resin.

[0146] In addition, although the display device 2000 for an outdoor display is described as an example here, the use of the display device 2000 is not particularly limited.

[0147] Fig.11A This is a schematic cross-sectional view of a light emitting device 1000G according to an embodiment of the present invention. Fig. 11B This is a schematic cross-sectional view showing an enlarged portion of the light emitting device 1000G. Fig. 11C It is a graph showing the relationship between the relative luminous intensity and the directivity angle of the light emitting device 1000G. Fig.11D It is a schematic top view of the light emitting device 1000G.

[0148] The light emitting device 1000G is different from the light emitting device 1000G in that the vertex of the lens portion 70 and the center of the light emitting element 50 are located on the same straight line. Figure 3A The light emitting device 1000A shown is different.

[0149] For example, when the display device 2000 used outdoors is viewed from below, the visibility of the light emitting device 1000A can be improved by expanding the light distribution in the viewing direction, that is, the -y direction. Here, expanding the light distribution in the -y direction means that the directional angle with a relative luminous intensity of 0.5 expands in the negative direction relative to the central axis of the directional angle and narrows in the positive direction. Fig.11A as well as Fig. 11B In the example shown, the light emitting device 1000G includes (1) the case where the straight line L1 and the center of the light emitting element 50 are offset and the curvature of the lens portion 70 is set to be asymmetric, and (2) the case where the straight line L1 and the center of the light emitting element 50 are offset and the curvature of the lens portion 70 is set to be symmetric. However, the light emitting device 1000G may also include (3) the case where the straight line L1 and the center of the light emitting element 50 coincide with each other and the curvature of the lens portion 70 is set to be asymmetric.

[0150] By shifting the vertex of the lens portion 70 away from the center of the light emitting element 50 , the light distribution of the light emitting device 1000G can be adjusted. Fig.11A as well as Fig. 11B A straight line L1 passing through the vertex of the lens portion 70 and parallel to the z-axis and a straight line L2 passing through the center of the light emitting element 50 and parallel to the z-axis are shown. Fig.11A as well as Fig. 11B In FIG. 1 , the straight line L1 is shown by a solid line, and the straight line L2 is shown by a dashed line. Fig.11AIt is a cross section cut along the y-axis and the z-axis. In the light emitting device 1000G, the straight line L1 is located in the -y direction of the straight line L2. Therefore, the optical axis of the lens portion 70 deviates in the -y direction and does not coincide with the center of the light emitting element 50. The -y direction is in the downward direction when the light emitting device 1000G is mounted on the display device 2000. Therefore, compared with the light emitting device 1000A, the light emitting device 1000G can expand the light distribution in the downward direction and can further improve the visibility when looking up from below. Fig. 11C FIG. 5 shows an example of the light distribution characteristics of the light output through the first lens portion 71 of the second light emitting element 52. Fig. 11C In the figure, the vertical axis shows the relative luminosity and the horizontal axis shows the directional angle. By deviating the vertex of the lens portion 71 to the negative side, the light outputted through the first lens portion 71 of the second light emitting element 52 is expanded in the -y direction, and the peak of the relative luminosity deviates from the 0° position of the directional angle to the negative side.

[0151] In addition, the outer edge of the second lens portion 72 of the light-emitting device 1000G has an asymmetric shape relative to the straight line L1. Similarly, the outer edge of the third lens portion 73 also has an asymmetric shape relative to the straight line L1. By setting the outer edge of the lens portion 70 to an asymmetric shape relative to the straight line L1, the light distribution of the light-emitting device 1000G can be adjusted. In the second lens portion 72, the curvature from the straight line L1 to the -y direction side is smaller than the curvature from the straight line L1 to the +y direction side. The same is true for the third lens portion 73. In addition, the first lens portion 71 is a shape that is symmetrical with respect to the optical axis of the lens portion 70. In addition, in the cross-section along the x-axis and the z-axis, the outer edges of the first lens portion 71 to the third lens portion 73 can be symmetrical with respect to the straight line L1, or can be asymmetric with respect to the straight line L1.

[0152] In addition, the light emitting device 1000G can adjust the light distribution by using the above (1) to (3) alone or in combination. In addition, in the light emitting devices 1000A to 1000F, the lens portion 70 can be changed as in the above (1) to (3), or the above (1) to (3) can be combined.

[0153] like Fig.11DAs shown, the outer periphery of the lens portion 73 in the -y direction from the long axis LA3 is longer than the outer periphery in the +y direction from the long axis LA3. The lens portion 73 has an asymmetric shape relative to the long axis LA3. The lens portion 73 has a symmetric shape relative to the short axis SA3. In addition, the outer periphery of the lens portion 72 in the -y direction from the long axis LA2 is longer than the outer periphery in the +y direction from the long axis LA2. The lens portion 72 has an asymmetric shape relative to the long axis LA2. The lens portion 72 has a symmetric shape relative to the short axis SA2. In addition, the outer periphery of the lens portion 71 in the +y direction from the long axis LA1 is the same size as the outer periphery in the -y direction from the long axis LA1. The lens portion 71 has a symmetric shape relative to the long axis LA1 and the short axis SA1. In addition, the outer periphery of the lens portion 70 is not limited to the above-mentioned shape. For example, the outer periphery of the lens portion 70 may also have an asymmetric shape relative to the long axes LA1 to LA3 for all of the lens portions 71 to 73, and a symmetric shape relative to the short axes SA1 to SA3.

[0154] Fig.12 FIG. 1 is a schematic top view of a light emitting device 1000H according to an embodiment of the present invention. In the top view, the entire reflective member 150 overlaps with the lens portion. Figure 3A The light emitting device 1000A shown is different. Thus, the area of ​​the region where the reflective member 150 is disposed can be reduced. By reducing the area of ​​the region where the reflective member 150 is disposed, the reduction in contrast of the light emitting device 1000H can be reduced.

[0155] The light emitting device 1000H has a plurality of first regions 200H in which the first to third light emitting elements 51 to 53 are arranged. In the top view, the area of ​​the reflective component 153 existing on the +y direction side of the long axis LA3 is smaller than the area of ​​the reflective component 153 existing on the -y direction side of the long axis LA3. The length of the reflective component 153 in the y direction is longer than the length of the short axis SA3 of the lens portion 73. The length of the reflective component 153 in the x direction may be the same as or different from the length of the reflective component 153 in the y direction. In addition, the reflective component 152 has the same structure as the reflective component 153.

[0156] (Second Embodiment)

[0157] The light emitting devices 1000J to 1000M of the second embodiment are described. The light emitting devices 1000J to 1000M of the second embodiment include a base; at least one first light emitting element disposed on the base and emitting light from the upper surface and the side surface; a reflective component disposed around the at least one first light emitting element; and a lens overlapping the at least one first light emitting element in a plan view, wherein the center of the reflective component coincides with the center of the lens. The light emitting devices 1000J to 1000M of the second embodiment are the same as those of the first embodiment in that they include a reflective component 150 that covers the side surface of the light emitting element 50 in a plan view. The side surface of the light emitting element 50 is covered by the reflective component as in the first embodiment. Therefore, the light emitted from the side surface of the light emitting element 50 is reflected by the reflective component 150 and is not easily emitted to the outside. For example, more than 90% of the light emitted from the side surface of the light emitting element 50 can be reflected by the reflective component 150. That is, by configuring the reflective component, the light emitted from the light emitting element 50 can be emitted mainly from the upper surface of the light emitting element 50. In this way, light can be extracted efficiently. Furthermore, since it is sufficient for light emitted mainly from the upper surface of the light emitting element to enter the lens portion 70, the outer shape of the lens portion 70 in a plan view can be reduced.

[0158] The second embodiment is different from the first embodiment in that the center of the lens portion 70 coincides with the center of the reflective member 150 at least in the y direction in a plan view.

[0159] In the top view, the area of ​​the reflective component 150 located in the -y direction from the center of the lens portion is the same as the area of ​​the portion located in the +y direction from the center of the lens portion. In the case where the shape of the lens portion 70 in the top view is an ellipse, the area of ​​the reflective component 150 located in the +y direction side of the major axis of the lens portion 70 is the same as the area of ​​the reflective component 150 located in the -y direction. In addition, in the case where the shape of the lens portion 70 in the top view is a circle, the area of ​​the reflective component 150 located in the +y direction side of the straight line passing through the center of the lens portion 70 and parallel to the x direction is the same as the area of ​​the reflective component 150 located in the -y direction. In addition, in the case where the shape of the lens portion 70 in the top view is an ellipse, the area of ​​the reflective component 150 located in the +x direction of the minor axis of the lens portion 70 is the same as the area of ​​the reflective component 150 located in the -x direction. In addition, when the shape of the lens portion 70 in the top view is circular, the area of ​​the reflective component 150 located in the +x direction of the straight line passing through the center of the lens portion 70 and parallel to the y direction is the same as the area of ​​the reflective component 150 located in the -x direction.

[0160] The reflective member 150 can be disposed only around the first light emitting element 51, or around the first light emitting element 51 and the third light emitting element 53. The light absorbing member 190 can be disposed around the second light emitting element 52.

[0161] Hereinafter, points different from the first embodiment will be mainly described, and description of the same structures as those of the first embodiment will be appropriately omitted.

[0162] Fig.13 This is a schematic top view of a light emitting device 1000J according to an embodiment of the present invention.

[0163] The light emitting device 1000J has a plurality of first regions 200J in which the first to third light emitting elements 51 to 53 are arranged. The center CR3 of the reflective component 153 of the light emitting device 1000J coincides with the center CL3 of the lens portion 73. The length of the reflective component 153 in the x direction (first direction) is shorter than the length of the major axis LA3 of the lens portion 73, and the length of the reflective component 153 in the y direction (second direction) is shorter than the length of the minor axis SA2 of the lens portion 73. In a top view, the length of the reflective component 153 in the x direction and the length of the reflective component 153 in the y direction of the light emitting device 1000J are shorter than those of the light emitting device 1000A. As a result, the light emitting device 1000J increases the area of ​​the dark-colored resin, namely the resin component 40, located around the reflective component 153, compared with the light emitting device 1000A. Therefore, the reduction in the contrast of the light emitting device 1000J can be reduced.

[0164] One side of the first light emitting element 51, which is approximately square, is configured to form an angle of 45° with respect to the x-axis. In addition, although the first light emitting element 51, the lens portion 73, and the reflective component 153 are used for the description, the same is true for the third light emitting element 53, the lens portion 72 overlapping the third light emitting element 53, and the reflective component 152 configured around the third light emitting element 53.

[0165] Fig.14A This is a simplified top view of a light emitting device 1000K according to an embodiment of the present invention. The top view shape of the lens portion 70 of the light emitting device 1000K is circular. The leads 81, 82, 83 connected to the first light emitting element 51 to the third light emitting element 53 of the light emitting device 1000K are connected within the first regions 21, 22, 23. In the top view, the first regions 21, 22, 23 are of the same shape or similar shapes. The top view shape of the first regions 21, 22, 23 is, for example, circular. The light emitting device 1000K can reduce the length B1 between the lens portions 70 by reducing the outer shape of the lens portion 70. The length B1 between the lens portions 70 is the minimum length between the lens portions 70 in the direction connecting the centers of the light emitting elements 50.

[0166] Fig. 14B This is a schematic top view of a light emitting device 1000L according to an embodiment of the present invention. The light emitting device 1000L is different from the light emitting device 1000K in that the center CL2 of the lens portion 72 located in the center in the y direction among the lens portions 71 to 73 is not located on the line connecting the center CL1 of the lens portion 71 and the center CL3 of the lens portion 73. The lens portions 71 to 73 are arranged so that the line segment connecting the centers CL1 to CL3 of the lens portions 71 to 73 forms a triangle. The light emitting device 1000L can reduce the lengths B2 and B3 of the lens portion 70 by reducing the outer shape of the lens portion 70. Fig. 14B , the length B3 is shorter than the length B2. In addition, the length B2 may be the same as the length B3, or may be shorter than the length B3. In addition, the top view shape of the lens portion 70 of the light emitting device 1000K is, for example, circular or elliptical. By setting the top view shape of the lens portion 70 to be elliptical, the lengths B2 and B3 between the lens portions 70 can be further reduced.

[0167] (Third Embodiment)

[0168] Fig.15A This is a schematic top view of a light emitting device 1000M according to an embodiment of the present invention. Fig. 15B This is a schematic three-dimensional diagram of a part of the light emitting device 1000M enlarged. Fig. 15C FIG. 1 is a schematic cross-sectional view of a portion of the light emitting device 1000M. Fig.15A As shown, the light emitting device 1000M arranges the light absorbing component between the reflective components in the y direction. That is, the light emitting device 1000M comprises a base; at least two first light emitting elements arranged on the base and emitting light from the upper surface and the side surface; a reflective component arranged around the at least two first light emitting elements; a light absorbing component arranged between the at least two first light emitting elements; and a lens overlapping with the at least one first light emitting element in the top view. In the top view, the area of ​​the reflective component existing on the +y direction side of the straight line passing through the center of the lens and parallel to the x direction of the light emitting device 1000M may be the same as or different from the area of ​​the reflective component existing in the -y direction. The light emitting device 1000M is different from the light emitting device 1000J in that a first region 200M is arranged relative to the light emitting elements 51 to 53 along the y direction.

[0169] like Fig. 15BAs shown, the first region 200M has a region 201 that is more recessed in the -y direction than the surface on which the first light-emitting element 51 and the third light-emitting element 53 are arranged between the first light-emitting element 51 and the third light-emitting element 53. In addition, the first region 200M also has a region 202 that is more recessed in the -y direction than the surface on which the third light-emitting element 53 and the second light-emitting element 52 are arranged between the third light-emitting element 53 and the second light-emitting element 52.

[0170] like Fig. 15C As shown, the reflective member 152 disposed around the third light emitting element 53 is disposed continuously with the connecting portion 154. In addition, the reflective member 152 is also disposed continuously with the connecting portion 155. The light absorbing member 193 is disposed in the recessed regions 201 and 202. The light absorbing member 193 is also disposed overlapping with the connecting portions 154 and 155. Therefore, the area of ​​the region where the reflective member 150 is disposed in the top view can be reduced. Therefore, the contrast between the light emitting device 1000M when it is turned on and when it is turned off can be improved.

[0171] In the light emitting device 1000M, the resin package 100 has a recess 170. A portion of the resin package 100 of the recess 170 is recessed toward the -z direction. Fig.15A In the example shown, four recesses 170 are provided.

[0172] The resin package 100 has a wall portion 101. A portion of the resin package 100 of the wall portion 101 protrudes toward the +z direction. Fig. 15B As shown in FIG. 1 , the wall portion 101 is arranged away from the light emitting element 50. The shape of the wall portion 101 is, for example, a rectangular shape in which a part of the wall portion 101 is missing. Fig. 15B In the figure, a part of each of two sides of the wall 101 facing each other across the light emitting element 52 is missing. The connecting parts 154 and 155 are connected to the reflective member 153 via the part of the rectangle that is missing.

[0173] This specification discloses a light emitting device and a display device described in the following items.

[0174] [Project 1]

[0175] A light emitting device comprising:

[0176] Base;

[0177] At least one first light-emitting element, which is disposed on the base and emits light from the upper surface and the side surface;

[0178] a reflective component disposed around the at least one first light-emitting element; and

[0179] a lens, which overlaps with the at least one first light-emitting element in a top view;

[0180] The shape of the lens in the top view is an ellipse having a major axis and a minor axis in the x direction and the y direction orthogonal to the x direction, respectively.

[0181] In the top view, the reflective component is arranged in such a manner that the area of ​​the region where the reflective component overlaps with the lens around the at least one first light-emitting element is larger than the area of ​​the region where the reflective component overlaps with the lens on the -y direction side of the major axis.

[0182] [Item 2] The light-emitting device according to Item 1, wherein:

[0183] In a plan view, a total length of a region where the reflective member and the lens overlap and are disposed around the at least one first light emitting element along the major axis is smaller than a total length of the minor axis.

[0184] [Item 3] The light-emitting device according to Item 1 or 2, wherein:

[0185] The at least one first light-emitting element comprises two first light-emitting elements,

[0186] The two first light emitting elements are arranged along the y direction.

[0187] [Item 4] The light-emitting device according to any one of Items 1 to 3, wherein:

[0188] further comprising a second light emitting element that emits light only from the upper surface,

[0189] The second light emitting element and the at least one first light emitting element are arranged along the y direction.

[0190] [Item 5] The light-emitting device according to Item 4, wherein:

[0191] The device further includes a light absorbing member disposed around the second light emitting element.

[0192] [Item 6] A display device, wherein:

[0193] A display device having a plurality of light emitting devices arranged in a matrix having rows and columns,

[0194] Each of the plurality of light-emitting devices is a light-emitting device according to any one of items 1 to 5,

[0195] The plurality of light emitting devices are arranged to form rows in the x direction and columns in the y direction.

[0196] [Item 7]

[0197] A light emitting device comprising:

[0198] Base;

[0199] At least one first light-emitting element, which is disposed on the base and emits light from the upper surface and the side surface;

[0200] A first reflective component disposed around the at least one first light-emitting element; and

[0201] a first lens, which overlaps with the at least one first light-emitting element in a top view,

[0202] The plan view shape of the first lens is an ellipse having a major axis and a minor axis in a first direction and a second direction perpendicular to the first direction, respectively.

[0203] The length of the first reflective member in the first direction is shorter than the length of the major axis of the ellipse of the first lens.

[0204] The center of the at least one first light-emitting element is consistent with the center of the first lens,

[0205] The center of the first reflective member is offset from the center of the first lens in the second direction, and the center of the first reflective member overlaps with the first lens.

[0206] [Item 8] The light emitting device according to Item 7, wherein:

[0207] The length of the first reflective member in the second direction is longer than the length of the minor axis of the elliptical shape of the first lens.

[0208] [Item 9] The light-emitting device according to Item 7 or 8, wherein:

[0209] The length of the first reflective member in the first direction is longer than the length in the second direction.

[0210] [Item 10] The light emitting device according to any one of Items 7 to 9, wherein:

[0211] The at least one first light-emitting element comprises two first light-emitting elements,

[0212] The two first light emitting elements are arranged along the second direction.

[0213] [Item 11] A display device, wherein:

[0214] A display device having a plurality of light emitting devices arranged in a matrix having rows and columns,

[0215] Each of the plurality of light-emitting devices is a light-emitting device according to any one of items 7 to 10,

[0216] The plurality of light emitting devices are arranged to form rows in the first direction and to form columns in the second direction.

[0217] Possibility of industrial application

[0218] The light emitting device according to the embodiment of the present invention can effectively utilize the light emitted from the light emitting element. In addition, the display device including the light emitting device according to the present invention can perform high-contrast display.

[0219] Description of the accompanying text

[0220] 1000A, 1000B, 1000C, 1000D, 1000E, : light emitting device, 3: waterproof resin, 11a to 13a, 11b to 13b: wires, 30, 32: exposed areas of the wires, 40: resin component, 47: convex portion, 50: light emitting element, 51: first light emitting element, 52: second light emitting element, 53: third light emitting element, 60: molded resin portion, 61: base portion, 61a: upper surface of the base portion, 61b: side portion of the base portion, 6 2: base step surface, 70: lens portion, 71: first lens portion, 72: second lens portion, 73: third lens portion, 100: resin package (base), 100a: main surface of resin package, 100b: back surface of resin package, 100c: outer side of resin package, 152, 153: reflective component around light-emitting element, 154: connecting portion (reflective component), 160, 190: light absorbing component (resin component), 1000u: interface portion, 2000: display device.

Claims

1. A light emitting device comprising: Base; At least one first light-emitting element, which is disposed on the base and emits light from the upper surface and the side surface; a reflective component disposed around the at least one first light-emitting element; and a lens which overlaps the at least one first light emitting element and a reflective member disposed around the first light emitting element in a plan view, The shape of the lens in the top view is an ellipse having a major axis and a minor axis in the x direction and the y direction orthogonal to the x direction, respectively. In a plan view, the area of ​​a portion of the reflective member overlapping the lens that is located on the −y direction side from the center of the major axis is larger than the area of ​​a portion that is located on the +y direction side from the center of the major axis.

2. The light emitting device according to claim 1, wherein: In a plan view, a total length of a region where the reflective member and the lens overlap and are disposed around the at least one first light emitting element along the major axis is smaller than a total length of the minor axis.

3. The light emitting device according to claim 1 or 2, wherein: The at least one first light-emitting element comprises two first light-emitting elements, The two first light emitting elements are arranged along the y direction.

4. The light emitting device according to claim 1 or 2, wherein: further comprising a second light emitting element that emits light only from the upper surface, The second light emitting element and the at least one first light emitting element are arranged along the y direction.

5. The light emitting device according to claim 4, wherein: The device further includes a light absorbing member disposed around the second light emitting element.

6. The light emitting device according to claim 5, wherein: The light absorbing member overlaps a portion of the reflective member disposed around the at least one first light emitting element.

7. A display device comprising a plurality of light emitting devices arranged in a matrix having rows and columns, wherein: Each of the plurality of light emitting devices is a light emitting device according to claim 1 or 2, The plurality of light emitting devices are arranged to form rows in the x direction and columns in the y direction.

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