Light-emitting module and planar light source

Abstract

Provided are a light-emitting module and a planar light source capable of reducing uneven brightness. The light guide device includes: a light guide member having a first surface, a second surface on an opposite side of the first surface, and a first through hole penetrating from the first surface to the second surface; a light source unit disposed in the first through hole of the light guide member; a first translucent member disposed in the first through hole of the light guide member and covering the light source unit; and a reflecting member disposed on the upper side of the light source unit and the upper side of the first light-transmitting member, the outer edge of the reflecting member being located further outward than the outer edge of the light source unit in plan view, the reflecting member including a resin member and a reflector having a lower refractive index than the resin member.

Description

[0001] This application is a divisional application of the invention patent application with application number 202211560072.2, invention name “Light-emitting module and planar light source”, and application date December 6, 2022. Technical Field

[0002] Embodiments of the present invention relate to a light emitting module and a planar light source. Background Art

[0003] A light emitting module that combines a light emitting element such as a light emitting diode and a light guide member is widely used as a planar light source such as a backlight of a liquid crystal display. For example, Patent Document 1 discloses a backlight device that includes an LED substrate having a reflective sheet and a plurality of light emitting diodes and a diffusion plate that is opposed to the LED substrate.

[0004] Prior Art Literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2019-61929 Summary of the invention

[0007] An object of the embodiments of the present invention is to provide a light emitting module and a planar light source capable of reducing uneven brightness.

[0008] According to one embodiment of the present invention, a light-emitting module comprises: a light-guiding component having a first surface, a second surface opposite to the first surface, and a first through hole extending from the first surface to the second surface; a light source portion, arranged in the first through hole of the light-guiding component; a first light-transmitting component, arranged in the first through hole of the light-guiding component and covering the light source portion; a reflecting component, arranged on the upper side of the light source portion and on the upper side of the first light-transmitting component, wherein the outer edge of the reflecting component is located at a position further outward than the outer edge of the light source portion when viewed from above, and the reflecting component comprises a resin component and a reflector having a lower refractive index than that of the resin component.

[0009] According to the light emitting module and the planar light source of one embodiment of the present invention, it is possible to reduce uneven brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic top view of the planar light source involved in this embodiment.

[0011] Figure 2 yes Figure 1 Schematic cross-sectional view taken along line II-II.

[0012] Figure 3A It is a schematic cross-sectional view of the light source unit according to the present embodiment.

[0013] Figure 3B It is a schematic cross-sectional view of a modified example of the light source unit according to the present embodiment.

[0014] Figure 3C It is a schematic plan view of a modified example of the light source unit according to the present embodiment.

[0015] Figure 3D yes Figure 3C Schematic cross-sectional view taken along line IIID-IIID.

[0016] Figure 3E It is a schematic bottom view of a modification of the light source unit according to the present embodiment.

[0017] Figure 3F It is a schematic plan view of a modified example of the light source unit according to the present embodiment.

[0018] Figure 3G yes Figure 3F Schematic cross-sectional view at line IIIG-IIIG.

[0019] Figure 4 It is a schematic cross-sectional view of a first reflecting member according to the present embodiment.

[0020] Figure 5 It is a schematic plan view of a modified example of the planar light source according to the present embodiment.

[0021] Figure 6 yes Figure 5 Schematic cross-sectional view taken along line VI-VI.

[0022] Figure 7 It is a schematic plan view of a modified example of the planar light source according to the present embodiment.

[0023] Figure 8 yes Figure 7 Schematic cross-sectional view taken along line VIII-VIII of .

[0024] Fig. 9 It is a schematic plan view of a modified example of the planar light source according to the present embodiment.

[0025] Fig.10 yes Fig. 9 Schematic cross-sectional view at line XX.

[0026] Fig.11 It is a schematic plan view of a modified example of the planar light source according to the present embodiment.

[0027] Fig.12 It is a schematic plan view of a modified example of the planar light source according to the present embodiment.

[0028] Fig.13 It is a schematic plan view of a modified example of the planar light source according to the present embodiment.

[0029] Fig.14 yes Fig.13 Schematic cross-sectional view taken along line XIV-XIV.

[0030] Fig.15 It is a schematic cross-sectional view of a modified example of the planar light source according to the present embodiment.

[0031] Fig.16 It is a schematic bottom view showing an example of a lower region of a light source section in the planar light source according to the present embodiment.

[0032] Fig.17 It is a schematic plan view of a modified example of the planar light source according to the present embodiment.

[0033] Fig.18A yes Fig.17 Part XVIIIA is a schematic enlarged view of the planar light source.

[0034] Fig.18B yes Fig.18A Schematic cross-sectional view taken along line XVIIIB-XVIIIB.

[0035] Fig. 18C It is a schematic enlarged view of a modification example of the planar light source according to the present embodiment.

[0036] Fig.18D It is a schematic enlarged view of a modification example of the planar light source according to the present embodiment.

[0037] Fig.18E It is a schematic enlarged view of a modification example of the planar light source according to the present embodiment.

[0038] -Description of Reference Numerals-

[0039] 10 Light guide component

[0040] 20 Light source

[0041] 30 first light-transmitting member

[0042] 40 first reflecting member

[0043] 45 Bonding components

[0044] 46 Third light-transmitting member

[0045] 50 second reflecting member

[0046] 60 Wiring substrate

[0047] 71 first bonding layer

[0048] 72 Second bonding layer

[0049] 80 third reflecting member

[0050] 90 Conductive member

[0051] 95 First insulation layer

[0052] 96 Second insulation layer

[0053] 100 Light emitting modules

[0054] 200 Supporting member

[0055] 300, 301, 302, 303, 304, 305 Surface light sources DETAILED DESCRIPTION

[0056] The embodiments will be described below with reference to the drawings. Each drawing schematically shows the embodiments, and therefore the proportions, intervals, positional relationships, etc. of each component may be exaggerated or a part of the component may be omitted. Figure 1 The schematic top view showing the planar light source shown in FIG. 1 is a view showing the planar light source from above. In this specification, the arrow direction of the Z axis is set to the top, and the direction of the Z axis opposite to the arrow direction is set to the bottom. In addition, as a sectional view, sometimes only the end view of the cut surface is shown.

[0057] In the following description, structural elements with substantially the same function are represented by common reference symbols, and description is sometimes omitted. In addition, terms indicating specific directions or positions are sometimes used (for example, "upper", "lower" and other terms containing these terms). However, these terms are used only to make the relative directions or positions in the referenced drawings easy to understand. If the relative directions or positions of the terms such as "upper" and "lower" in the referenced drawings are the same, then in the drawings outside the present disclosure, actual products, etc., it is also possible not to have the same configuration as the referenced drawings. In this specification, "parallel" not only includes the situation that two straight lines, edges, faces, etc. do not intersect even if extended, but also includes the situation that the angle formed by two straight lines, edges, faces, etc. intersects within a range of 10°. In this specification, the positional relationship described as "upper" also includes the situation of being connected and the situation of being not connected but located above.

[0058] [Implementation Method]

[0059] Reference Figures 1 to 8The planar light source 300 of the embodiment will be described. Two directions parallel to the first surface 101 of the light guide member 10 that is the light emitting surface of the planar light source 300 and orthogonal to each other are referred to as the first direction and the second direction. A direction orthogonal to the first direction and the second direction is referred to as the third direction. Figure 1 In the embodiment, the first direction is the X direction, the second direction is the Y direction, and the third direction is the Z direction. In this specification, the first direction (X direction) and / or the second direction (Y direction) are sometimes referred to as the lateral direction, and the third direction (Z direction) is sometimes referred to as the vertical direction.

[0060] The planar light source 300 includes a light emitting module 100 and a supporting member 200. The light emitting module 100 is arranged on the supporting member 200. The light emitting module 100 includes a light guide member 10, a light source unit 20, a first light transmissive member 30, and a reflective member 40 (hereinafter referred to as a first reflective member). The light guide member 10 includes a first surface 101 and a second surface 102 on the opposite side of the first surface 101. The light guide member 10 includes a first through hole 10H that passes from the first surface 101 to the second surface 102. The light source unit 20 is arranged in the first through hole 10H of the light guide member 10. The first light transmissive member 30 is arranged in the first through hole 10H of the light guide member 10. The first light transmissive member 30 covers the light source unit 20. The first reflective member 40 is arranged on the upper side of the light source unit 20. The first reflective member 40 is arranged on the upper side of the first light transmissive member 30. When viewed from above, the outer edge of the first reflective member 40 is located at a position further outward than the outer edge of the light source unit 20. The first reflection member 40 includes a resin member 41A (hereinafter referred to as a first resin member) and a reflector 41B (hereinafter referred to as a first reflector) having a lower refractive index than the first resin member 41A.

[0061] By positioning the first reflective member 40 above the light source unit 20 , it is possible to prevent the area directly above the light source unit 20 from becoming too bright. Thus, it is possible to reduce uneven brightness of the light emitting module 100 .

[0062] Hereinafter, each element constituting the planar light source 300 will be described in detail.

[0063] (Light Guide Member 10)

[0064] The light guide member 10 is a member that is translucent to the light emitted by the light source unit 20. The transmittance of the light guide member 10 to the peak wavelength of the light source unit 20 is preferably 60% or more, and more preferably 80% or more. In this specification, the transmittance refers to the transmittance to the peak wavelength of the light source unit 20. Figure 2As shown, the light guide member 10 includes a first surface 101 that becomes the light emitting surface of the planar light source 300 and a second surface 102 located on the opposite side of the first surface 101. The light guide member 10 includes a first through hole 10H for configuring the light source unit 20. The first through hole 10H in this embodiment is circular when viewed from above. The first through hole 10H can also be an ellipse or a polygonal shape such as a triangle, a quadrilateral, a hexagon or an octagon when viewed from above.

[0065] The number of light guide components 10 provided in the light emitting module 100 may be one or more. In the present embodiment, the light emitting module 100 includes a plurality of light guide components 10 including a first light guide portion 10A, a second light guide portion 10B, a third light guide portion 10C, and a fourth light guide portion 10D. In the first direction (X direction), the first light guide portion 10A is adjacent to the second light guide portion 10B. In the first direction (X direction), the third light guide portion 10C is adjacent to the fourth light guide portion 10D. In the second direction (Y direction), the first light guide portion 10A is adjacent to the third light guide portion 10C. In the second direction (Y direction), the second light guide portion 10B is adjacent to the fourth light guide portion 10D.

[0066] The light guide member 10 is divided by a dividing groove 18. One area divided by the dividing groove 18 is set as a light emitting area 300A. In the present embodiment, the first light guide portion 10A, the second light guide portion 10B, the third light guide portion 10C, and the fourth light guide portion 10D divided by the dividing groove 18 respectively divide different light emitting areas 300A. One light emitting area 300A can be set as a driving unit for local dimming. The number of light emitting areas 300A constituting the planar light source 300 is not particularly limited. For example, the planar light source 300 may have one light emitting area 300A, or the planar light source 300 may have a plurality of light emitting areas 300A. In addition, a planar light source device with a larger area may be formed by arranging a plurality of planar light sources 300.

[0067] In the present embodiment, the light guide member 10 has a grid-shaped dividing groove 18 consisting of a first dividing groove 18A extending in the second direction (Y direction) and a second dividing groove 18B extending in the first direction (X direction). The first dividing groove 18A extending in the second direction (Y direction) is provided between the first light guide portion 10A and the second light guide portion 10B. The second dividing groove 18B extending in the first direction (X direction) is provided between the first light guide portion 10A and the third light guide portion 10C. The dividing groove 18 preferably passes through from the first surface 101 to the second surface 102 of the light guide member 10. Thus, the light guide member 10 can be separated into a plurality of parts, so that, for example, the warping of the supporting member 200 caused by the difference in thermal expansion coefficient between the light guide member 10 and the supporting member 200 can be suppressed. Thus, cracks can be suppressed from occurring in the conductive member 90 described later. The partition groove 18 may be a recessed portion opened only on the first surface 101 side of the light guide member 10 or may be a recessed portion opened only on the second surface 102 side of the light guide member 10. When the partition groove 18 is a recessed portion, the partition groove 18 has a bottom surface formed by the light guide member 10.

[0068] As a material of the light guide member 10 , for example, a thermoplastic resin such as acrylic, polycarbonate, cyclic polyolefin, polyethylene terephthalate, or polyester, a thermosetting resin such as epoxy or silicone, or glass can be used.

[0069] The thickness of the light-guiding component 10 is preferably, for example, not less than 150 μm and not more than 800 μm. In the present specification, the thickness of each component is the maximum value from the upper surface of each component located in the third direction (Z direction) to the lower surface of each component. The light-guiding component 10 can be composed of a single layer in the third direction, or can be composed of a multi-layer stack. In the case where the light-guiding component 10 is composed of a stack, a light-transmitting adhesive can also be arranged between the layers. Different types of main materials can also be used for each layer of the stack. As the material of the adhesive, for example, a thermoplastic resin such as acrylic, polycarbonate, cyclic polyolefin, polyethylene terephthalate or polyester, or a thermosetting resin such as epoxy or silicone can be used.

[0070] (Light source unit 20)

[0071] The light source unit 20 is arranged in the first through hole 10H of the light guide member 10. The number of light source units 20 provided in the light emitting module 100 may be one or more. In the present embodiment, the light emitting module 100 includes a plurality of light source units 20 including a first light source 20A, a second light source 20B, a third light source 20C, and a fourth light source 20D. The first light source 20A is arranged in the first through hole 10H of the first light guide unit 10A. The second light source 20B is arranged in the first through hole 10H of the second light guide unit 10B. The third light source 20C is arranged in the first through hole 10H of the third light guide unit 10C. The fourth light source 20D is arranged in the first through hole 10H of the fourth light guide unit 10D.

[0072] like Figure 3A As shown, the light source unit 20 includes a light emitting element 21. The light emitting element 21 includes a semiconductor stack. The semiconductor stack includes, for example, a substrate of sapphire or gallium nitride, an n-type semiconductor layer arranged on the substrate, a p-type semiconductor layer, and a light emitting layer sandwiched therebetween. In addition, the light emitting element 21 includes an n-side electrode electrically connected to the n-type semiconductor layer and a p-side electrode electrically connected to the p-type semiconductor layer. The n-side electrode and the p-side electrode constitute a portion of the lower surface of the light emitting element 21. Furthermore, the light source unit 20 includes a pair of positive and negative electrodes 24. The pair of positive and negative electrodes 24 constitute a portion of the lower surface of the light source unit 20. One of the pair of electrodes 24 is electrically connected to the p-side electrode, and the other is electrically connected to the n-side electrode.

[0073] The semiconductor stack may also be a stack without the substrate. In addition, the structure of the light-emitting layer may be a double hetero structure, a structure having a single active layer such as a single quantum well structure (SQW), or a structure having a group of active layers such as a multi-quantum well structure (MQW). The light-emitting layer can emit visible light or ultraviolet light. The light-emitting layer can emit light from blue to red as visible light. As a semiconductor stack including such a light-emitting layer, for example, it can include In x Al y Ga 1-x-yN (0≤x, 0≤y, x+y≤1). The semiconductor stack can include at least one of the above-mentioned light-emitting layers capable of emitting light. For example, the semiconductor stack can be a structure including one or more light-emitting layers between an n-type semiconductor layer and a p-type semiconductor layer, or a structure including a structure in the order of an n-type semiconductor layer, a light-emitting layer, and a p-type semiconductor layer repeated multiple times. In the case where the semiconductor stack includes multiple light-emitting layers, it can include light-emitting layers with different peak emission wavelengths, or it can include light-emitting layers with the same peak emission wavelength. In addition, the same peak emission wavelength can have a deviation of about several nm, for example. As a combination of such light-emitting layers, it can be appropriately selected. For example, in the case where the semiconductor stack includes two light-emitting layers, the light-emitting layer can be selected by a combination of blue light and blue light, green light and green light, red light and red light, ultraviolet light and ultraviolet light, blue light and green light, blue light and red light, or green light and red light. In addition, the light emission can include multiple active layers with different peak emission wavelengths, or it can include multiple active layers with the same peak emission wavelength.

[0074] like Figure 3A As shown, the light source unit 20 may further include a translucent member 22 (hereinafter referred to as a light source translucent member). The light source translucent member 22 covers the upper surface and side surfaces of the light emitting element 21. The light source translucent member 22 protects the light emitting element 21, and has functions such as wavelength conversion and light diffusion according to particles added to the light source translucent member 22.

[0075] For example, the light source translucent member 22 may also include a translucent resin and a phosphor. As the translucent resin, for example, a silicone resin or an epoxy resin may be used. In addition, as the phosphor, a yttrium / aluminum / garnet phosphor (for example, Y3(Al, Ga)5O 12 :Ce), lutetium / aluminum / garnet phosphors (e.g., Lu3(Al,Ga)5O 12 :Ce, terbium / aluminum / garnet phosphors (e.g., Tb3(Al,Ga)5O 12 :Ce), CCA series phosphors (e.g., Ca 10 (PO4)6Cl2:Eu), SAE-based phosphors (e.g., Sr4Al 14 O 25 :Eu), chlorosilicate phosphors (e.g., Ca8MgSi4O 16 Cl2:Eu), β-sialon phosphors (e.g. (Si,Al)3(O,N)4:Eu), or α-sialon phosphors (e.g. Ca(Si,Al) 12 (O, N) 16:Eu) and other nitride-based phosphors, SLA-based phosphors (e.g., SrLiAl3N4:Eu), CASN-based phosphors (e.g., CaAlSiN3:Eu) or SCASN-based phosphors (e.g., (Sr,Ca)AlSiN3:Eu) and other nitride-based phosphors, KSF-based phosphors (e.g., K2SiF6:Mn), KSAF-based phosphors (e.g., K2Si 0.99 Al 0.01 F 5.99 :Mn) or MGF-based phosphors (e.g., 3.5MgO / 0.5 MgF2 / GeO2:Mn) or other fluoride-based phosphors, phosphors having a perovskite structure (e.g., CsPb(F, Cl, Br, I)3) or quantum dot phosphors (e.g., CdSe, InP, AgInS2 or AgInSe2), etc. As the phosphor added to the light source translucent member 22, one phosphor may be used, or a plurality of phosphors may be used.

[0076] The KSAF-based phosphor may have a composition represented by the following formula (I).

[0077] M2[Si p Al q Mn r F s ] (I)

[0078] In formula (I), M represents an alkali metal and may contain at least K. Mn may be a tetravalent Mn ion. p, q, r and s may satisfy 0.9≤p+q+r≤1.1, 0<q≤0.1, 0<r≤0.2, and 5.9≤s≤6.1. Preferably, 0.95≤p+q+r≤1.05 or 0.97≤p+q+r≤1.03, 0<q≤0.03, 0.002≤q≤0.02 or 0.003≤q≤0.015, 0.005≤r≤0.15, 0.01≤r≤0.12 or 0.015≤r≤0.1, 5.92≤s≤6.05 or 5.95≤s≤6.025. For example, K2[Si 0.946 Al 0.005 Mn 0.049 F 5.995 ]、K2[Si 0.942 Al 0.008 Mn 0.050 F 5.992 ]、K2[Si 0.939 Al 0.014 Mn 0.047 F 5.986 ] The composition represented by this KSAF-based phosphor can produce red light with high brightness and a narrow half-value width of the emission peak wavelength.

[0079] In addition, a wavelength conversion sheet containing the above-mentioned phosphor may be arranged on the planar light source 300. The wavelength conversion sheet can be a planar light source that absorbs part of the blue light from the light source unit 20, emits yellow light, green light and / or red light, and emits white light. For example, a light source unit 20 capable of emitting blue light and a wavelength conversion sheet containing a phosphor capable of emitting yellow light are combined to obtain white light. In addition, a light source unit 20 capable of emitting blue light and a wavelength conversion sheet containing a red phosphor and a green phosphor may be combined. In addition, a light source unit 20 capable of emitting blue light and a plurality of wavelength conversion sheets may be combined. As the plurality of wavelength conversion sheets, for example, a wavelength conversion sheet containing a phosphor capable of emitting red light and a wavelength conversion sheet containing a phosphor capable of emitting green light may be selected. In addition, a light source unit 20 having a light emitting element 21 capable of emitting blue light and a light source translucent member 22 containing a phosphor capable of emitting red light and a wavelength conversion sheet containing a phosphor capable of emitting green light may be combined.

[0080] As the yellow phosphor used in the wavelength conversion sheet, for example, the above-mentioned yttrium / aluminum / garnet phosphor is preferably used. In addition, as the green phosphor used in the wavelength conversion sheet, it is preferred to use a phosphor with a narrow half-value width of the peak wavelength of light emission, such as the above-mentioned perovskite structure or quantum dot phosphor. In addition, as the red phosphor used in the wavelength conversion sheet, it is preferred to use a phosphor with a narrow half-value width of the peak wavelength of light emission, such as the above-mentioned KSF phosphor, KSAF phosphor or quantum dot phosphor, similarly to the green phosphor.

[0081] The light source unit 20 may further include a covering member 23. The covering member 23 is disposed on the lower surface of the light emitting element 21. The covering member 23 is disposed so that the lower surface of the electrode 24 of the light source unit 20 is exposed from the covering member 23. The covering member 23 is also disposed on the lower surface of the light source translucent member 22 covering the side surface of the light emitting element 21.

[0082] The covering member 23 has reflectivity for the light emitted from the light source unit 20. The covering member 23 is, for example, a resin member containing light scattering particles. As the light scattering particles of the covering member 23, for example, particles such as titanium dioxide, silicon dioxide, aluminum oxide, zinc oxide, magnesium oxide, zirconium oxide, yttrium oxide, calcium fluoride, magnesium fluoride, niobium pentoxide, barium titanate, tantalum pentoxide, barium sulfate, or glass can be used. As the resin material of the covering member 23, for example, a thermoplastic resin such as acrylic resin, polycarbonate resin, cyclic polyolefin resin, polyethylene terephthalate resin, or polyester resin, or a thermosetting resin such as epoxy resin or silicone resin can be used.

[0083] like Figure 3BAs shown, the light source unit 20 may include a light adjustment member 25. The light adjustment member 25 constitutes at least a part of the upper surface of the light source unit 20. The light adjustment member 25 is arranged on the upper side of the light emitting element 21. The light adjustment member 25 is arranged on the upper side of the light source translucent member 22, and adjusts the amount and emission direction of the light emitted from the upper surface of the light source translucent member 22. The light adjustment member 25 has reflectivity and translucency with respect to the light emitted by the light emitting element 21. A part of the light emitted from the upper surface of the light source translucent member 22 is reflected by the light adjustment member 25, and another part is transmitted through the light adjustment member 25. The transmittance of the light adjustment member 25 with respect to the peak wavelength of the light emitting element 21 is preferably, for example, not less than 1% and not more than 50%, and more preferably not less than 3% and not more than 30%. By including the light adjustment member 25 in the light source unit 20, it is possible to prevent the area directly above the light source unit 20 from becoming too bright. As a result, the brightness unevenness of the light emitting module 100 can be reduced.

[0084] The light adjustment member 25 can be composed of a light-transmitting resin and light-scattering particles contained in the light-transmitting resin. As the light-transmitting resin of the light adjustment member 25, for example, a thermoplastic resin such as acrylic resin, polycarbonate resin, cyclic polyolefin resin, polyethylene terephthalate resin or polyester resin, or a thermosetting resin such as epoxy resin or silicone resin can be used. As the light-scattering particles of the light adjustment member 25, for example, particles such as titanium dioxide, silicon dioxide, aluminum oxide, zinc oxide, magnesium oxide, zirconium oxide, yttrium oxide, calcium fluoride, magnesium fluoride, niobium pentoxide, barium titanate, tantalum pentoxide, barium sulfate, or glass can be used. In addition, the light adjustment member 25 can also be a metal member such as aluminum or silver, or a dielectric multilayer film.

[0085] like Figure 3A As shown, the light source unit 20 may not include the light adjustment member 25. As a result, it is easy to miniaturize the light source unit 20 in the third direction (Z direction) compared with the case where the light source unit 20 is arranged on the upper side of the light emitting element 21 and includes the light adjustment member 25. As a result, it is easy to miniaturize the light emitting module 100 in the third direction (Z direction). As another form of the light source unit 20, the light source unit 20 may not include the covering member 23. For example, the lower surface of the light source unit may be constituted by the lower surface of the light emitting element, the lower surface of a pair of electrodes 24, and the lower surface of the light source translucent member. As another form of the light source unit 20, the light source unit 20 may be only a single body of the light emitting element 21. As another form of the light source unit 20, the light source unit 20 may not include the covering member 23 and the light source translucent member 22, and the light adjustment member 25 may be arranged on the upper surface of the light emitting element 21. As another embodiment of the light source unit 20 , the light source unit 20 may not include the light source translucent member 22 , but may include the light adjustment member 25 on the upper surface of the light emitting element 21 and the cover member 23 on the lower surface of the light emitting element 21 .

[0086] The shape of the light source unit 20 when viewed from above is not particularly limited. The shape of the light source unit 20 when viewed from above may be, for example, a circle, a triangle, a quadrilateral, a hexagon, or an octagon. When the shape of the light source unit 20 when viewed from above is a quadrilateral, the pair of outer edges of the light source unit 20 may be parallel to the first direction (X direction) or may be inclined relative to the first direction (X direction). In the present embodiment, the pair of outer edges of the light source unit 20 are inclined 45° relative to the first direction (X direction).

[0087] like Figure 3C As shown, the light source unit 20 can be a light source unit 201 including a plurality of light emitting elements 21. The plurality of light emitting elements 21 include a first light emitting element 21A, a second light emitting element 21B, and a third light emitting element 21C. The peak wavelength of light emission of the first light emitting element 21A, the peak wavelength of light emission of the second light emitting element 21B, and the peak wavelength of light emission of the third light emitting element 21C are not particularly limited. For example, the peak wavelength of light emission of the first light emitting element 21A, the peak wavelength of light emission of the second light emitting element 21B, and the peak wavelength of light emission of the third light emitting element 21C can be the same or different. Preferably, the peak wavelength of light emission of the first light emitting element 21A is greater than 610nm and less than 780nm, the peak wavelength of light emission of the second light emitting element 21B is greater than 460nm and less than 500nm, and the peak wavelength of light emission of the third light emitting element 21C is greater than 500nm and less than 570nm. Thus, a light source unit 201 that emits white light by combining the red light of the first light emitting element 21A, the blue light of the second light emitting element 21B, and the green light of the third light emitting element 21C can be obtained.

[0088] When viewed from above, the area of ​​the first light emitting element 21A, the area of ​​the second light emitting element 21B, and the area of ​​the third light emitting element 21C are not particularly limited. For example, when the first light emitting element 21A emits red light and the second light emitting element 21B emits blue light, when viewed from above, the area of ​​the first light emitting element 21A is preferably larger than the area of ​​the second light emitting element 21B. Generally, the luminous efficiency of the first light emitting element 21A that emits red light is lower than the luminous efficiency of the second light emitting element 21B that emits blue light. Therefore, when viewed from above, the area of ​​the first light emitting element 21A that emits red light is larger than the area of ​​the second light emitting element 21B that emits blue light, thereby enhancing the light of the first light emitting element 21A whose luminous efficiency is lower than that of the second light emitting element 21B. When the first light emitting element 21A emits red light and the third light emitting element 21C emits green light, when viewed from above, the area of ​​the first light emitting element 21A is preferably larger than the area of ​​the third light emitting element 21C.

[0089] Figure 3DThe light source translucent member 22 of the light source unit 201 shown covers the upper surface of the first light emitting element 21A and the upper surface of the second light emitting element 21B. Since the upper surface of the first light emitting element 21A and the upper surface of the second light emitting element 21B are covered by the light source translucent member 22, the light emitted from the first light emitting element 21A and the light emitted from the second light emitting element 21B can be mixed in the light source translucent member 22. Thus, the brightness unevenness of the light emitted from the light source unit 201 can be suppressed. In addition, the light source translucent member 22 of the light source unit 201 covers the upper surface of the third light emitting element 21C.

[0090] The cover member 23 of the light source unit 201 covers the side surface of the first light emitting element 21A and the side surface of the second light emitting element 21B. Thus, part of the light emitted from the side surface of the first light emitting element 21A is reflected by the cover member 23. Therefore, it is possible to suppress the light emitted from the side surface of the first light emitting element 21A from being absorbed by the second light emitting element 21B. Thus, the light extraction efficiency of the light source unit 201 is improved. In addition, the cover member 23 of the light source unit 201 covers the side surface of the third light emitting element 21C.

[0091] like Figure 3D As shown in FIG. 1 , the light source unit 201 includes the light adjustment member 25 covering the upper surface of the light source translucent member 22 . In addition, the light source unit 201 may not include the light adjustment member 25 .

[0092] like Figure 3D , Figure 3E As shown, the light source unit 201 includes a conductive layer 26 electrically connected to the electrode of the light emitting element 21. The plurality of light emitting elements 21 are preferably independently driven. In this way, the brightness of the light source unit 201 can be easily adjusted. In addition, the plurality of light emitting elements 21 can be connected in series, in parallel, or in combination of series and parallel connection.

[0093] like Figure 3F As shown, the light source unit 20 can be set as a light source unit 202 including a plurality of light emitting elements 21 including a first light emitting element 21A, a second light emitting element 21B, and a third light emitting element 21C. Figure 3GAs shown, the light source translucent member 22 of the light source unit 202 includes a first light source translucent member 22A covering the upper surface of the first light emitting element 21A and a second light source translucent member 22B covering the upper surface of the second light emitting element 21B. The peak wavelength of light emission of the first light emitting element 21A is greater than 460nm and less than 500nm, the peak wavelength of light emission of the second light emitting element 21B and the peak wavelength of light emission of the third light emitting element 21C are greater than 500nm and less than 570nm, and the first light source translucent member 22A includes a red phosphor. Thus, a light source unit 201 that emits white light by combining the blue light of the first light emitting element 21A, the green light of the second light emitting element 21B and the third light emitting element 21C with the red light of the first light source translucent member 22A can be obtained. As the red phosphor, for example, a KSF series phosphor or a KSAF series phosphor can be cited. The color that the light emitting element 21 can emit and the color that the phosphor can emit are not particularly limited. For example, a light emitting element 21 capable of emitting blue light and a phosphor capable of emitting yellow light may be combined to obtain white light, or a light emitting element 21 capable of emitting blue light, a light emitting element 21 capable of emitting red light, and a phosphor capable of emitting green light may be combined to obtain white light. In addition, the light source translucent member 22 of the light source unit 202 includes a third light source translucent member 22C covering the upper surface of the third light emitting element 21C.

[0094] The light source translucent member 22 of the light source unit 202 includes a fourth light source translucent member 22D covering the upper surface of the first light source translucent member 22A and the upper surface of the second light source translucent member 22B. Since the upper surface of the first light source translucent member 22A and the upper surface of the second light source translucent member 22B are covered by the fourth light source translucent member 22D, the light emitted from the first light source translucent member 22A and the light emitted from the second light source translucent member 22B can be mixed in the fourth light source translucent member 22D. Thus, the uneven brightness of the light emitted from the light source unit 202 can be suppressed. In addition, the fourth light source translucent member 22D covers the upper surface of the third light source translucent member 22C.

[0095] The covering member 23 of the light source unit 202 covers the side surface of the first light emitting element 21A, the side surface of the first light source translucent member 22A, the side surface of the second light emitting element 21B, and the side surface of the second light source translucent member 22B. Thus, a portion of the light emitted from the side surface of the first light emitting element 21A is reflected by the covering member 23. Therefore, it is possible to suppress the light emitted from the side surface of the first light emitting element 21A from being absorbed by the second light emitting element 21B and / or the second light source translucent member 22B. Thus, the light extraction efficiency of the light source unit 202 is improved. In addition, the covering member 23 covers the side surface of the third light emitting element 21C and the side surface of the third light source translucent member 22C.

[0096] like Figure 3G As shown, the light source unit 202 includes a light adjustment member 25 covering the upper surface of the light source translucent member 22. In addition, the light source unit 202 may not include the light adjustment member 25. The light source unit 202 includes a conductive layer 26 electrically connected to the electrode of the light emitting element 21.

[0097] (First light-transmitting member 30)

[0098] The first light-transmitting member 30 is a member that is light-transmitting to the light emitted by the light source unit 20. The transmittance of the first light-transmitting member 30 with respect to the peak wavelength of the light source unit 20 is preferably 60% or more, and more preferably 80% or more. As a material of the first light-transmitting member 30, for example, a thermosetting resin such as epoxy or silicone, or a thermoplastic resin such as acrylic, polycarbonate, cyclic polyolefin, polyethylene terephthalate, or polyester can be used.

[0099] The first light-transmitting member 30 is disposed in the first through hole 10H of the light-guiding member 10. The first light-transmitting member 30 covers the light source unit 20. The number of first light-transmitting members 30 provided in the light-emitting module 100 may be one or more. In the present embodiment, the light-emitting module 100 includes a plurality of first light-transmitting members 30, and the plurality of first light-transmitting members 30 respectively cover the light source unit 20.

[0100] like Figure 2 As shown, the first light-transmitting member 30 is preferably connected to the light source unit 20 and the light-guiding member 10. Thus, the light from the light source unit 20 is easily incident on the light-guiding member 10. Preferably, the refractive index of the base material of the first light-transmitting member 30 is lower than the refractive index of the base material of the light-guiding member 10. Thus, it is possible to suppress the light entering the light-guiding member 10 from the first light-transmitting member 30 from being totally reflected at the interface between the first light-transmitting member 30 and the light-guiding member 10. Thus, the light from the light source unit 20 is easily guided to the light-guiding member 10, and thus it is easy to reduce the uneven brightness of the light-emitting module 100. In this specification, the refractive index refers to the refractive index relative to the peak wavelength of the light source unit 20.

[0101] like Figure 2As shown, the first light-transmitting member 30 is preferably configured to expose at least a portion of the upper surface of the light source unit 20. Thus, it is easy to miniaturize the light-emitting module 100 in the third direction (Z direction) compared to the case where the first light-transmitting member 30 covers the entire upper surface of the light source unit 20. In addition, the first light-transmitting member 30 may also cover the upper surface of the light source unit 20. By covering the upper surface of the light source unit 20 with the first light-transmitting member 30, it is easy to adjust the brightness in the area directly above the light source unit 20. For example, by changing the thickness of the first light-transmitting member 30 that covers the portion of the upper surface of the light source unit 20, the brightness of the area directly above the light source unit 20 can be adjusted. Thus, it is easy to adjust the brightness, and therefore it is easy to reduce the uneven brightness of the light-emitting module 100.

[0102] The first light-transmitting member 30 may be composed of a single layer in the third direction (Z direction), or may be composed of a multi-layer stack. In addition, the first light-transmitting member 30 may also contain a fluorescent substance and light-scattering particles. In the case where the first light-transmitting member 30 is a stack, each layer may contain a fluorescent substance and / or light-scattering particles, or may not contain them. For example, the first light-transmitting member 30 may also be composed of a layer containing a fluorescent substance and a layer not containing a fluorescent substance.

[0103] (First Reflecting Member 40)

[0104] The first reflective member 40 is a member having reflectivity with respect to the light emitted by the light source unit 20. The reflectivity of the first reflective member 40 is preferably 60% or more, and more preferably 80% or more, for example. In this specification, the reflectivity refers to the reflectivity with respect to the peak wavelength of the light source unit 20. The first reflective member 40 may be composed of a single layer or a laminate of multiple layers.

[0105] like Figure 2As shown, the first reflecting member 40 is arranged on the upper side of the light source unit 20. Thus, it is possible to prevent the area directly above the light source unit 20 from becoming too bright. The first reflecting member 40 is arranged on the upper side of the first light-transmitting member 30. When viewed from above, the outer edge of the first reflecting member 40 is located at a position further outward than the outer edge of the light source unit 20. Thus, it is possible to prevent the peripheral area directly above the light source unit 20 from becoming too bright. In this specification, the first reflecting member 40 is arranged on the upper side of the light source unit 20, which means that the first reflecting member 40 overlaps with the light source unit 20 when viewed from above, and the first reflecting member 40 is located above the light source unit 20 in the overlapping portion. The upper side refers to the direction from the second surface 102 side of the light guide member 10 toward the first surface 101 side in the third direction (Z direction). In addition, the lower side refers to the direction from the first surface 101 side of the light guide member 10 toward the second surface 102 side in the third direction (Z direction). In this specification, the first reflective member 40 is arranged on the upper side of the first light-transmitting member 30, which means that the first reflective member 40 overlaps with the first light-transmitting member 30 when viewed from above, and the first reflective member 40 is located above the first light-transmitting member 30 in the overlapping portion. The number of first reflective members 40 provided in the light-emitting module 100 may be one or more. In the present embodiment, the light-emitting module 100 includes a plurality of first reflective members 40, and the plurality of first reflective members 40 are respectively arranged on the upper side of the light source unit 20.

[0106] like Figure 4 As shown, the first reflective member 40 includes a first resin member 41A and a first reflector 41B with a lower refractive index than the first resin member 41A. As a result, a portion of the light from the light source unit 20 incident on the first resin member 41A is totally reflected at the interface between the first resin member 41A and the first reflector 41B. Therefore, it is possible to suppress the light from leaking above the light source unit 20, and thus it is possible to suppress the area directly above the light source unit 20 from becoming too bright. As a result, it is possible to reduce the uneven brightness of the light emitting module 100.

[0107] The refractive index of the first resin member 41A is preferably higher than the refractive index of the base material of the first light-transmitting member 30. Thus, it is easy to increase the refractive index difference between the first resin member 41A and the first reflector 41B. Thus, part of the light entering the first reflector 41B from the first resin member 41A is easily totally reflected at the interface between the first resin member 41A and the first reflector 41B. Thus, it is possible to suppress the light from leaking above the light source unit 20, and thus it is possible to suppress the area directly above the light source unit 20 from becoming too bright.

[0108] like Figure 4As shown, it is preferred that the maximum length L1 of the first reflector 41B in the horizontal direction (X direction and / or Y direction) is longer than the maximum length L2 in the vertical direction (Z direction) when the first reflector 41B is cross-sectionally viewed. Thus, it is easy to make the surface of the first reflector 41B facing the light source unit 20 close to a flat surface compared to the case where the first reflector 41B is spherical. Thus, when the light emitted from the light source unit 20 is reflected by a part of the first reflective member 40 located around the light source unit 20 when viewed from above, it is easy to reflect in a direction away from the light source unit 20. Thus, it is possible to reduce the light emitted from the light source unit 20 being absorbed by the light source unit 20, so that the light extraction efficiency of the light emitting module 100 is improved. In addition, when the light source translucent member 22 of the light source unit 20 includes a fluorescent body, it is possible to reduce the light returning to the light source unit 20, so that the wavelength of the light from the light source unit 20 can be suppressed from being over-converted by the fluorescent body included in the light source translucent member 22. The maximum length L1 of the first reflector 41B in the horizontal direction (X direction and / or Y direction) is not particularly limited. For example, the maximum length L1 of the first reflector 41B in the lateral direction (X direction and / or Y direction) is twice or more the maximum length L2 of the first reflector 41B in the up-down direction (Z direction).

[0109] The first reflective member 40 preferably has a plurality of second through holes 40H. The plurality of second through holes 40H penetrate from the upper surface to the lower surface of the first reflective member 40. Since the first reflective member 40 has a plurality of second through holes 40H, it is easy to adjust the brightness in the area directly above the first reflective member 40. For example, by changing the size and position of the second through holes 40H, it is possible to adjust the light from the light source unit 20 blocked by the first reflective member 40. Thus, it is easy to adjust the brightness in the area directly above the first reflective member 40, so it is easy to reduce the uneven brightness of the light-emitting module 100. When viewed from above, it is preferred that all of the plurality of second through holes 40H are located away from the light source unit 20. Thus, it is possible to prevent the area directly above the light source unit 20 from becoming too bright.

[0110] In cross-sectional view, the side surface of the first reflective member 40 that divides the second through hole 40H is preferably inclined so that the length of the second through hole 40H in the lateral direction becomes longer from the lower surface side of the first reflective member 40 toward the upper surface side of the first reflective member 40. Thus, it is easy to extract the light from the light source unit 20 upward. In addition, in cross-sectional view, the side surface of the first reflective member 40 that divides the second through hole 40H may also be inclined so that the length of the second through hole 40H in the lateral direction becomes shorter from the lower surface side of the first reflective member 40 toward the upper surface side of the first reflective member 40. In addition, in the cross-sectional view, the side surface of the first reflective member 40 that divides the second through hole 40H may not be inclined.

[0111] In cross-section, the side surface of the first reflective member 40 that divides the second through hole 40H preferably has a convex portion or a concave portion. For example, by changing the size and position of the convex portion or the concave portion provided on the side surface of the first reflective member 40 that divides the second through hole 40H, the light from the light source unit 20 blocked by the first reflective member 40 can be adjusted. As a result, the brightness can be easily adjusted, and thus the brightness unevenness of the light emitting module 100 can be easily reduced.

[0112] The first reflective member 40 preferably has a convex portion 40A (hereinafter referred to as the first reflective convex portion) extending upward around the second through hole 40H. The first reflective convex portion 40A is arranged on the upper surface side of the first reflective member 40. In the case where an optical sheet such as a prism sheet or a light diffusion sheet is arranged above the light emitting module 100, even if the first reflective convex portion 40A is in contact with the optical sheet, it is easy to configure an air layer between the first reflective member 40 and the optical sheet. The light from the light source unit 20 is reflected or refracted by the air layer between the first reflective member 40 and the optical sheet, so that the light is easily diffused to the area away from the light source unit 20. In this way, the uneven brightness of the light emitting module can be reduced. The first reflective member 40 may also have a convex portion (hereinafter referred to as the second reflective convex portion) extending downward around the second through hole 40H. The second reflective convex portion is arranged on the lower surface side of the first reflective member 40. By having the second reflective convex portion on the first reflective member 40, it is easy to increase the area where the adhesive member 45 described later is in contact with the first reflective member 40. This can improve the adhesion between the adhesive member 45 and the first reflection member 40 .

[0113] In a plan view, the first reflective member 40 preferably has a plurality of concave portions 40B (hereinafter referred to as first reflective concave portions) that are recessed in the lateral direction. The first reflective concave portions 40B are provided at the outer edge of the first reflective member 40. By having the first reflective concave portions 40B in the first reflective member 40, it is easy to adjust the brightness around the first reflective member 40. For example, by changing the size and position of the first reflective concave portions 40B, it is possible to adjust the light from the light source unit 20 that is blocked by the first reflective member 40. Thus, it is easy to adjust the brightness around the first reflective member 40, and thus it is easy to reduce the uneven brightness of the light emitting module 100. In addition, by having the plurality of first reflective concave portions 40B in the first reflective member 40, it is easy to disperse the portion with high brightness and the portion with low brightness near the outer edge of the first reflective member 40. Thus, near the outer edge of the first reflective member 40, it is possible to make the boundary between the brightness of the portion located on the inner side of the outer edge of the first reflective member 40 and the brightness of the portion located on the outer side of the outer edge of the first reflective member 40 inconspicuous. The size of the first reflective concave portion 40B is not particularly limited. The maximum length of the first reflective recess 40B in the first direction may be longer than the maximum length of the second through hole 40H in the first direction. The maximum length of the first reflective recess 40B in the second direction may be longer than the maximum length of the second through hole 40H in the second direction.

[0114] like Figure 1 As shown in FIG. 1 , when viewed from above, the outer edge of the first reflective member 40 is preferably located further inward than the outer edge of the first through hole 10H of the light guide member 10. As a result, when viewed from above, it is easy to increase the area of ​​the first light-transmitting member 30 exposed from the first reflective member 40. As a result, it is easy to extract the light from the light source unit 20 upward from the upper surface of the first light-transmitting member 30. Figure 5 As shown in the planar light source 301, when viewed from above, the outer edge of the first reflective member 40 may be located further outward than the outer edge of the first through hole 10H of the light guide member 10. Thus, the outer edge of the first through hole 10H of the light guide member 10 is covered by the first reflective member 40. Thus, it is possible to prevent the vicinity of the outer edge of the first through hole 10H from becoming too bright, and it is easy to reduce the uneven brightness of the light emitting module 100. In addition, as shown in FIG. Figure 7 Like the planar light source 302 shown, the outer edge of the first reflective member 40 may include a portion located inside the outer edge of the first through hole 10H of the light guide member 10 and a portion located outside the outer edge of the first through hole 10H of the light guide member 10 when viewed from above.

[0115] As a material of the first resin member 41A, for example, polyethylene terephthalate (PET) resin, olefin resin, acrylic resin, silicone resin, polyurethane resin or epoxy resin can be cited. As the first reflector 41B, for example, a gas such as air can be cited. As other materials of the first reflector 41B, for example, particles such as silicon dioxide, calcium fluoride or magnesium fluoride can be cited. In addition, the first reflective member 40 may include a reflector with a higher refractive index than the first resin member 41A, or may not include it. By including a reflector with a higher refractive index than the first resin member 41A in the first reflective member 40, it is possible to further suppress the area directly above the light source unit 20 from becoming too bright.

[0116] like Figure 2 , Figure 6 , Figure 8 As shown, a translucent adhesive member 45 is arranged between the light source unit 20 and the first reflective member 40, so that the light source unit 20 and the first reflective member 40 can be fixed. In this specification, the adhesive member 45 is sometimes referred to as a second translucent member. In addition, a translucent adhesive member 45 is arranged between the first translucent member 30 and the first reflective member 40, so that the first translucent member 30 and the first reflective member 40 can be fixed. As a material of the adhesive member 45, for example, a thermoplastic resin such as acrylic acid, polycarbonate, cyclic polyolefin, polyethylene terephthalate, or polyester, an epoxy, or a thermosetting resin such as silicone can be used. In addition, as the adhesive member 45, a sheet-shaped optical transparent adhesive (OCA) can also be used. In addition, when the first reflective member 40 has adhesiveness, the light source unit 20 and the first reflective member 40 can also be fixed by contacting each other.

[0117] In a plan view, the adhesive member 45 preferably overlaps with the second through hole 40H of the first reflective member 40. Figure 2 , Figure 6 As shown, the adhesive member 45 is preferably located below the second through hole 40H of the first reflective member 40. Thus, the adhesive member 45 can adjust the light leaking from the second through hole 40H, so that the brightness unevenness of the light emitting module 100 can be easily reduced.

[0118] The adhesive member 45 is preferably in contact with at least a portion of the side surface of the first reflective member 40. Thus, the adhesive member 45 and the first reflective member 40 are in close contact with each other. The adhesive member 45 is preferably in contact with at least a portion of the side surface of the first reflective member 40 that defines the second through hole 40H. Thus, the adhesive member 45 and the first reflective member 40 are in close contact with each other.

[0119] The adhesive member 45 may also have a through hole. In a plan view, the through hole of the adhesive member 45 may also overlap with the second through hole 40H of the first reflective member 40. In other words, Figure 8 As shown, the adhesive member 45 may not exist below the second through hole 40H of the first reflective member 40. As a result, light can easily leak out from the second through hole 40H, and thus the light extraction efficiency of the light emitting module 100 is improved.

[0120] (Second Reflecting Member 50)

[0121] like Figure 2 As shown, the light emitting module 100 further includes a second reflecting member 50. The second reflecting member 50 is a member having reflectivity with respect to the light emitted by the light source unit 20. The reflectivity of the second reflecting member 50 is preferably 60% or more, and more preferably 80% or more, for example.

[0122] The second reflective member 50 is arranged in the dividing groove 18. In the present embodiment, the second reflective member 50 is arranged in a layer along the inner surface of the dividing groove 18. The second reflective member 50 may be composed of a single layer or a multi-layer laminate. In addition, the second reflective member 50 may also be filled in the dividing groove 18. The second reflective member 50 is arranged in the dividing groove 18. For example, the light guide from the light-emitting area in the light-emitting state to the light-emitting area in the non-light-emitting state is limited by the second reflective member 50. Thus, the contrast between the light-emitting area in the light-emitting state and the light-emitting area in the non-light-emitting state can be improved. In addition, the light-emitting module 100 may not have the second reflective member 50.

[0123] The second reflective member 50 can be composed of a second resin member and a second reflector included in the second resin member. As the second resin member, for example, a thermoplastic resin such as acrylic resin, polycarbonate resin, cyclic polyolefin resin, polyethylene terephthalate resin or polyester resin, or a thermosetting resin such as epoxy resin or silicone resin can be used. As the second reflector, for example, titanium dioxide, silicon dioxide, aluminum oxide, zinc oxide, magnesium oxide, zirconium oxide, yttrium oxide, calcium fluoride, magnesium fluoride, niobium pentoxide, barium titanate, tantalum pentoxide, barium sulfate, or glass particles can be used. The second reflective member 50 can also be a metal member such as aluminum or silver or a dielectric multilayer film.

[0124] (Supporting member 200)

[0125] The support member 200 is a member on which the light emitting module 100 is disposed. The support member 200 supports the light guide member 10 and the light source unit 20. The light guide member 10 is disposed on the support member 200 with the second surface 102 facing the upper surface of the support member 200.

[0126] The supporting member 200 has a wiring substrate 60. The wiring substrate 60 has an insulating substrate 61 and at least one wiring layer 62 arranged on at least one surface of the insulating substrate 61. The insulating substrate 61 can be a rigid substrate or a flexible substrate. In order to make the planar light source thinner, the insulating substrate 61 is preferably a flexible substrate. The insulating substrate 61 can be composed of a single layer in the third direction (Z direction), or it can be composed of a multi-layer stack. For example, the insulating substrate 61 can be composed of a single-layer flexible substrate, or it can be composed of a stack of multiple rigid substrates. As the material of the insulating substrate 61, for example, a resin such as polyimide can be used. The wiring layer 62 is a metal film, such as a copper film.

[0127] The supporting member 200 further includes a first adhesive layer 71 disposed on the wiring substrate 60 , a third reflective member 80 disposed on the first adhesive layer 71 , and a second adhesive layer 72 disposed on the third reflective member 80 .

[0128] The first adhesive layer 71 is disposed between the insulating substrate 61 and the third reflective member 80, and adheres the insulating substrate 61 and the third reflective member 80. The first adhesive layer 71 is, for example, a resin layer containing light scattering particles. As the resin of the first adhesive layer 71, for example, thermoplastic resins such as acrylic resin, polycarbonate resin, cyclic polyolefin resin, polyethylene terephthalate resin or polyester resin, or thermosetting resins such as epoxy resin or silicone resin can be used. As the light scattering particles of the first adhesive layer 71, for example, particles such as titanium dioxide, silicon dioxide, aluminum oxide, zinc oxide, magnesium oxide, zirconium oxide, yttrium oxide, calcium fluoride, magnesium fluoride, niobium pentoxide, barium titanate, tantalum pentoxide, barium sulfate, or glass can be used.

[0129] The refractive index of the resin of the first adhesive layer 71 is preferably lower than the refractive index of the resin of the third reflective member 80. Thus, part of the light entering the first adhesive layer 71 from the third reflective member 80 is totally reflected at the interface between the third reflective member 80 and the first adhesive layer 71. Thus, it is possible to suppress light from leaking downward from the light emitting module 100, thereby improving the light extraction efficiency of the light emitting module 100.

[0130] The third reflective member 80 is arranged below the second surface 102 of the light guide member 10, below the light source unit 20, below the first light-transmitting member 30, and below the dividing groove 18. The third reflective member 80 has reflectivity for the light emitted by the light source unit 20. The third reflective member 80 can be composed of a third resin member and a third reflector included in the third resin member. Examples of the third reflective member 80 include polyethylene terephthalate (PET) resin, olefin resin, acrylic resin, silicone resin, polyurethane resin, or epoxy resin. Examples of the third reflector include gases such as air. Examples of other materials for the third reflector include particles such as silicon dioxide, calcium fluoride, or magnesium fluoride.

[0131] The refractive index of the third reflector is preferably lower than that of the third resin member. Thus, part of the light from the light source unit 20 incident on the third resin member is totally reflected at the interface between the third resin member and the third reflector. Thus, it is possible to suppress light from leaking downward from the third reflective member 80, thereby improving the light extraction efficiency of the light emitting module 100.

[0132] The refractive index of the third resin member is preferably higher than the refractive index of the base material of the first light-transmitting member 30. Thus, it is easy to increase the refractive index difference between the third resin member and the third reflector. Thus, part of the light from the light source unit 20 incident on the third resin member is easily totally reflected at the interface between the third resin member and the third reflector.

[0133] The second adhesive layer 72 is disposed between the third reflective member 80 and the second surface 102 of the light guide member 10, and adheres the third reflective member 80 and the light guide member 10. The light source unit 20 is disposed on the second adhesive layer 72 in the first through hole 10H of the light guide member 10. As a material for the second adhesive layer 72, for example, it can be selected from the resins listed as the resins that can be used for the above-mentioned first adhesive layer 71. In addition, the second adhesive layer 72 can contain light scattering particles, and the light scattering particles can be selected from the light scattering particles listed as the light scattering particles that can be used for the above-mentioned first adhesive layer 71.

[0134] The refractive index of the resin of the second adhesive layer 72 is preferably lower than the refractive index of the base material of the light guide member 10. As a result, a portion of the light entering the second adhesive layer 72 from the light guide member 10 is totally reflected at the interface between the light guide member 10 and the second adhesive layer 72. As a result, it is possible to suppress the light leaking to the bottom of the light emitting module 100, and thus the light extraction efficiency of the light emitting module 100 is improved. The refractive index of the resin of the second adhesive layer 72 is preferably lower than the refractive index of the first light transmissive member 30. As a result, a portion of the light entering the second adhesive layer 72 from the first light transmissive member 30 is totally reflected at the interface between the first light transmissive member 30 and the second adhesive layer 72. As a result, it is possible to suppress the light leaking to the bottom of the light emitting module 100, and thus the light extraction efficiency of the light emitting module 100 is improved.

[0135] The support member 200 further includes a conductive member 90. The conductive member 90 includes, for example, a resin and metal particles contained in the resin. As the resin of the conductive member 90, for example, epoxy resin or phenol resin can be used. As the metal particles, for example, copper or silver particles can be used.

[0136] The conductive member 90 includes a connection portion 91 and a wiring portion 92. The connection portion 91 penetrates the second adhesive layer 72, the third reflective member 80, the first adhesive layer 71, and the insulating substrate 61 in the third direction (Z direction). The wiring portion 92 is arranged on the surface of the wiring substrate 60 where the wiring layer 62 is arranged, and is connected to the connection portion 91. The connection portion 91 and the wiring portion 92 can be integrally formed of the same material, for example. A portion of the wiring portion 92 is connected to the wiring layer 62.

[0137] A pair of conductive members 90 are arranged to be separated from each other corresponding to a pair of positive and negative electrodes 24 of the light source unit 20. A connection portion 91 of one conductive member 90 is connected to the positive electrode 24 below the light source unit 20, and a connection portion 91 of the other conductive member 90 is connected to the negative electrode 24 below the light source unit 20. The electrodes 24 of the light source unit 20 are electrically connected to the conductive members 90 and the wiring layer 62.

[0138] The supporting member 200 further includes a first insulating layer 95. The first insulating layer 95 is disposed on the lower surface of the wiring substrate 60 and covers the wiring layer 62. As a material of the first insulating layer 95, for example, epoxy resin, urethane resin, or acrylic resin can be used.

[0139] The supporting member 200 further includes a second insulating layer 96. The second insulating layer 96 is disposed on the lower surface of the conductive member 90 and covers the conductive member 90. As a material of the second insulating layer 96, for example, epoxy resin, urethane resin, or acrylic resin can be used.

[0140] Reference Figures 9 to 15 Modifications of the light guide member 10 are described below. Fig. 9As shown in the planar light source 303, the light guide member 10 may also include a light guide hole portion 11. In a plan view, the light guide hole portion 11 is located between the first through hole 10H and the partition groove 18. Fig.10 As shown, the light guide hole portion 11 is a recessed portion that is open only on the first surface 101 side of the light guide member 10. The light guide hole portion 11 may pass through from the first surface 101 of the light guide member 10 to the second surface 102, or may be a recessed portion that is open only on the second surface 102 side of the light guide member 10. By including the light guide hole portion 11 in the light guide member 10, the surface area of ​​the light guide member 10 can be increased. Thus, the amount of light taken out from the surface of the light guide member 10 to the outside of the light guide member 10 can be increased. Thus, it is easy to adjust the brightness, and thus it is easy to reduce the uneven brightness of the light-emitting module 100. In addition, when the light guide hole portion 11 is a recessed portion, the depth of the recessed portion in the Z direction is more than 0.1 times the thickness of the light guide member 10.

[0141] like Fig.10 As shown, it is preferred that at least a portion of the light guide hole 11 overlaps with the light source 20 in the lateral direction (X direction and / or Y direction). As a result, at least a portion of the light that travels in the lateral direction from the light source 20 is converted into light that travels upward by being refracted on the surface of the light guide hole 11. As a result, the amount of light that is taken out upward can be increased. As a result, the brightness adjustment becomes easy, and thus it is easy to reduce the uneven brightness of the light emitting module 100.

[0142] The shape of the light guide hole 11 when viewed from above is not particularly limited. Fig. 9 , Fig.11 , Fig.12 As shown, the light guide hole 11 of this embodiment is a shape extending in one direction. The shape of the light guide hole 11 when viewed from above may also be a V-shape or an L-shape extending in two directions. In addition, the shape of the light guide hole 11 when viewed from above may also be a circle, an ellipse, or a polygon such as a triangle, a quadrilateral, a hexagon, or an octagon.

[0143] The point farthest from the first light source 20A in the outer edge of the first light guide portion 10A located on the second surface 102 is called the first point P1, and the point closest to the first light source 20A in the outer edge of the first light guide portion 10A located on the second surface 102 is called the second point P2. In this embodiment, the first point P1 is located at a corner of the first light guide portion 10A, and the second point P2 is located at the center of each side of the first light guide portion 10A. The first point P1 and the second point P2 can be one or more.

[0144] like Fig.11Like the planar light source 304 shown in the figure, when viewed from above, the light guide hole portion 11 is preferably located on a first imaginary straight line connecting the center of the first light source 20A and the first point P1. In this way, the uneven brightness of the light emitting module can be reduced. The first point P1 far away from the first light source 20A tends to have lower brightness than the second point P2 close to the first light source 20A, but by locating the light guide hole portion 11 on the first imaginary straight line, it is easy to increase the amount of light taken out to the outside of the light guide component 10 near the first point P1. In this way, the difference in brightness between the first point P1 and the second point P2 can be suppressed, so that the uneven brightness of the light emitting module can be reduced. In addition, as Fig. 9 As shown, in a plan view, the light guide hole portion 11 may not be located on the first imaginary straight line connecting the center of the first light source 20A and the first point P1.

[0145] like Fig.11 As shown, it is preferred that the plurality of light guide holes 11 are located on the first imaginary straight line. This makes it easy to adjust the brightness near the first point P1, and thus it is easy to reduce the brightness unevenness of the light emitting module.

[0146] like Fig.12 As shown in the planar light source 305, when viewed from above, the light guide hole portion 11 may also be located on a second imaginary straight line connecting the center of the first light source 20A and the second point P2. When viewed from above, it is preferred that the shortest length from a point of the light guide hole portion 11 located on the first imaginary straight line to the center of the first light source 20A is longer than the shortest length from a point of the light guide hole portion 11 located on the second imaginary straight line to the center of the first light source 20A. Thus, the light guide hole portion 11 located on the first imaginary straight line is easily located near the first point P1. Thus, it is easy to increase the light taken out to the outside of the light guide member 10 near the first point P1. In this specification, the shortest length from a point of the light guide hole portion 11 located on the first imaginary straight line to the center of the first light source 20A refers to the length when the length from a point of the light guide hole portion 11 located on the first imaginary straight line among the plurality of light guide hole portions 11 to the center of the first light source 20A is the shortest when the length from a point of the light guide hole portion 11 located on the first imaginary straight line among the plurality of light guide hole portions 11 is the shortest. The shortest length from a point of the light guide hole portion 11 located on the second imaginary straight line to the center of the first light source 20A refers to the length when the length from a point of the light guide hole portion 11 located on the second imaginary straight line among the multiple light guide hole portions 11 to the center of the first light source 20A is the shortest when a plurality of light guide hole portions 11 are located on the second imaginary straight line.

[0147] The number of light guide holes 11 located on the second imaginary straight line is preferably less than the number of light guide holes 11 located on the first imaginary straight line. Fig.12In the embodiment shown, there is one light guide hole 11 located on the second imaginary straight line, and there are four light guide holes 11 located on the first imaginary straight line. This can prevent the vicinity of the second point P2 close to the first light source 20A from becoming too bright. Fig.11 As shown, the light guide hole 11 may not be located on the second imaginary straight line. This can prevent the vicinity of the second point P2 close to the first light source 20A from becoming too bright.

[0148] like Fig.13 As shown in the planar light source 306, the light guide hole portion 11 may also extend obliquely in the first direction (X direction) and the second direction (X direction) so that the end of the light guide hole portion 11 close to the center of the first light source 20A is separated from the first light source 20A. In this way, a part of the light from the first light source 20A can be guided in the direction in which the light guide hole portion 11 extends. In this way, the uneven brightness of the light emitting module can be reduced.

[0149] like Fig.13 Like the planar light source 306 shown in the figure, the shape of the light guide hole portion 11 provided in the first light guide portion 10A and the shape of the light guide hole portion 11 provided in the second light guide portion 10B may also be different. For example, before forming the light guide hole portion 11 on the light guide component 10, the uneven brightness of the first light guide portion 10A and the uneven brightness of the second light guide portion 10B are confirmed. After confirming the uneven brightness of the first light guide portion 10A and the uneven brightness of the second light guide portion 10B, light guide hole portions 11 suitable for the first light guide portion 10A and the second light guide portion 10B, respectively, are formed in the light guide component 10. In this way, the uneven brightness of the light-emitting module can be reduced. For example, if the uneven brightness is suppressed within a desired range before the light guide hole portion 11 is formed in the light guide component 10, it is not necessary to Fig.13 The light guide hole 11 is provided in the light guide member 10 as in the fourth light guide portion 10D. The brightness unevenness of the first light guide portion 10A and the second light guide portion 10B can be confirmed by measuring the brightness with a two-dimensional colorimeter (CA-2500 manufactured by Konica Minolta), for example.

[0150] like Fig.14 As shown, the second light-transmitting member 45 is located between the first light-transmitting member 30 and the first reflective member 40. The second light-transmitting member 45 is preferably in contact with at least a portion of the side surface of the first reflective member 40 defining the second through hole 40H. Thus, the adhesion between the adhesive member 45 and the first reflective member 40 is improved.

[0151] like Fig.14As shown, the second light-transmitting member 45 is preferably in contact with at least a portion of the upper surface of the first reflective member 40. As a result, the close contact between the second light-transmitting member 45 and the first reflective member 40 is improved. The second light-transmitting member 45 preferably continuously covers the side surface of the first reflective member 40 that divides the second through hole 40H and the upper surface of the first reflective member 40. By covering the upper surface of the first reflective member 40 with the second light-transmitting member 45, the area of ​​the second light-transmitting member 45 exposed from the first reflective member 40 when viewed from above can be increased. A portion of the light that has passed through the second through hole 40H is taken out to the outside from the second light-transmitting member 45 with a large area when viewed from above. As a result, it is easy to reduce the difference in brightness between the inner side of the second through hole 40H and the outer side of the second through hole 40H when viewed from above.

[0152] like Fig.14 As shown, the upper surface of the second light-transmitting member 45 located on the upper side of the second through hole 40H preferably includes a curved convex shape. In this way, since the upper surface of the second light-transmitting member 45 plays the role of a lens, it is easy to extract the light from the light source to the outside. As a result, the light extraction efficiency of the light-emitting module is improved.

[0153] like Fig.14 As shown, the second light-transmitting member 45 is preferably in contact with the convex portion 40A of the first reflective member 40. Thus, the close contact between the second light-transmitting member 45 and the first reflective member 40 is improved. The second light-transmitting member 45 is preferably in contact with the outer side surface of the first reflective member 40. Thus, the close contact between the second light-transmitting member 45 and the first reflective member 40 is improved.

[0154] like Fig.15 As shown, the plurality of second through holes 40H have adjacent third through holes 40H1 and fourth through holes 40H2. In cross-section, it is preferred that the side surface of the first reflective member 40 dividing the third through hole 40H1, the upper surface of the first reflective member 40 located between the third through hole 40H1 and the fourth through hole 40H2, and the side surface of the first reflective member 40 dividing the fourth through hole 40H2 are continuously covered. Thus, the close contact between the second light-transmitting member 45 and the first reflective member 40 is improved. In addition, by covering the upper surface of the first reflective member 40 with the second light-transmitting member 45, the area of ​​the second light-transmitting member 45 exposed from the first reflective member 40 in a plan view can be increased. A portion of the light that has passed through the third through hole 40H1 or the fourth through hole 40H2 is taken out to the outside from the second light-transmitting member 45 having a large area in a plan view. This makes it easy to reduce the difference in brightness between the inner side of the third through hole 40H1 and the fourth through hole 40H and the outer side of the third through hole 40H1 and the fourth through hole 40H in a plan view.

[0155] The shape of the connection portion 91 of the conductive member 90 when viewed from above is not particularly limited. Fig.16 As shown, the shape of the connection portion 91 when viewed from above may also be a triangle. The shape of the connection portion 91 when viewed from above may be a polygon such as a circle, an ellipse, a quadrilateral, or the like. When viewed from above, the portion with the shortest length from the outer edge of the electrode 24 of the light source portion 20 to the outer edge of the connection portion 91 is preferably located between the pair of electrodes 24. Thus, it is easy to prevent a pair of conductive members 90 that are arranged corresponding to the pair of electrodes 24 from being in contact and causing a short circuit. Between the pair of electrodes 24, it is preferred that the outer edge of the connection portion 91 that is electrically connected to one of the pair of electrodes 24 is parallel to the outer edge of the connection portion 91 that is electrically connected to the other of the pair of electrodes 24. Thus, it is easy to prevent a pair of conductive members 90 from being in contact and causing a short circuit.

[0156] Reference Figures 17 to 18E A modified example of the planar light source is described below. Fig.17 , Fig.18A As shown, the light guide member 10 of the light emitting module 100 includes a plurality of light guide members 10 including a first light guide portion 10A, a second light guide portion 10B, and a third light guide portion 10C. In a first direction (X direction), the first light guide portion 10A is adjacent to the second light guide portion 10B. In a second direction (Y direction) orthogonal to the first direction (X direction), the first light guide portion 10A is adjacent to the third light guide portion 10C. Fig.17 As shown, the light-emitting module 100 of the planar light source 307 includes a third light-transmitting member 46. The third light-transmitting member 46 is adjacent to the second light guide portion 10B and the third light guide portion 10C. In the first direction (X direction), the third light-transmitting member 46 is adjacent to the third light guide portion 10C. In the second direction (Y direction), the third light-transmitting member 46 is adjacent to the second light guide portion 10B. Since the light-emitting module 100 includes the third light-transmitting member 46, it is easy to adjust the brightness near the second light guide portion 10B and / or the third light guide portion 10C. The light from the second light source 20B arranged in the first through hole 10H of the second light guide portion 10B and / or the light from the third light source 20C arranged in the first through hole 10H of the third light guide portion 10C enters the third light-transmitting member 46. As a result, it is easy to adjust the brightness of the area directly above the third light-transmitting member 46 located near the second light guide portion 10B and the third light guide portion 10C. In addition, in this specification, adjacent portions only need to overlap partially in one direction. For example, in the first direction (X direction), the first light guide portion 10A and the second light guide portion 10B are adjacent to each other, which means that in the first direction (X direction), at least a portion of the first light guide portion 10A has a portion overlapping with the second light guide portion 10B.

[0157] like Fig.18BAs shown, the third light-transmitting member 46 preferably has a hole portion 46H that opens on the upper surface 401 side of the third light-transmitting member 46. By including the hole portion 46H in the third light-transmitting member 46, the surface area of ​​the third light-transmitting member 46 can be increased. As a result, it is easy to take out the light incident on the third light-transmitting member 46 to the outside of the third light-transmitting member 46. For example, by including the hole portion 46H in the third light-transmitting member 46, the light advancing in the lateral direction from the light source unit 20 easily hits the surface of the third light-transmitting member 46 that divides the hole portion 46H. Therefore, the amount of light taken out from the surface of the third light-transmitting member 46 that divides the hole portion 46H to the outside of the light guide member 10 can be increased. As a result, the brightness of the area directly above the third light-transmitting member 46 can be improved. In the present embodiment, the hole portion 46H of the third light-transmitting member 46 is a recessed portion that opens only on the upper surface 401 side. In addition, the hole portion 46H of the third light-transmitting member 46 may be a through hole extending from the upper surface 401 to the lower surface 402, or may be a recessed portion opening only on the lower surface 402 side. The third light-transmitting member 46 preferably has a plurality of hole portions 46H. Thus, it is easy to increase the surface area of ​​the third light-transmitting member 46. Thus, it is easy to take out the light incident on the third light-transmitting member 46 to the outside of the third light-transmitting member 46.

[0158] like Fig.18B As shown, it is preferred that at least a portion of the hole portion 46H of the third light-transmitting member 46 overlaps with the light source portion 20 in the lateral direction. Thus, it is easy to extract the light from the light source portion 20 incident on the third light-transmitting member 46 to the outside of the third light-transmitting member 46 through the hole portion 46H. Thus, the brightness of the area directly above the third light-transmitting member 46 can be improved.

[0159] like Fig.18AAs shown, it is preferred that the hole portion 46H of the third light-transmitting member 46 has a portion extending in a direction intersecting the first direction (X direction) and the second direction (Y direction) when viewed from above. As a result, it is easy to take out the light advancing from the second light source 20B in the second direction (Y direction) and the light advancing from the third light source 20C in the first direction (X direction) through the hole portion 46H of the third light-transmitting member 46 to the outside of the third light-transmitting member 46. As a result, the brightness of the area directly above the third light-transmitting member 46 can be improved. When viewed from above, it is preferred that the angle formed by the direction in which the hole portion 46H of the third light-transmitting member 46 extends and the first direction (X direction) is greater than 30° and less than 60°. As a result, it is easy to take out the light advancing from the second light source 20B in the second direction (Y direction) and the light advancing from the third light source 20C in the first direction (X direction) through the hole portion 46H of the third light-transmitting member 46 to the outside of the third light-transmitting member 46. In the present specification, the angle formed by the direction in which the hole 46H of the third light-transmitting member 46 extends and the first direction (X direction) when viewed from above refers to an angle less than 90° among the angles formed by the direction in which the hole 46H of the third light-transmitting member 46 extends and the first direction.

[0160] The shape of the hole 46H of the third light-transmitting member 46 when viewed from above is not particularly limited. Fig.18A As shown in FIG. 4 , the hole portion 46H of the third light-transmitting member 46 of this embodiment is shaped to extend in one direction. Fig. 18C As shown in FIG. 1 , the shape of the hole 46H of the third light-transmitting member 46 when viewed from above may also have a curved portion. In addition, the shape of the hole 46H of the third light-transmitting member 46 when viewed from above may also be a V-shape or an L-shape extending in two directions. The portion connecting the portions extending in the two directions may also have rounded corners. Fig.18D As shown, the hole portion 46H of the third light-transmitting member 46 may also include a portion extending in the first direction (X direction) and a portion extending in the second direction (Y direction). Fig.18E As shown in FIG. 1 , the shape of the hole 46H of the third light-transmitting member 46 when viewed from above may also be circular. In addition, the shape of the hole 46H of the third light-transmitting member 46 when viewed from above may also be an ellipse or a polygon such as a triangle, a quadrilateral, a hexagon or an octagon. Fig.18E As shown, in a plan view, the plurality of holes 46H of the third light-transmitting member 46 may also be Fig.18A The holes 46H of the third light-transmitting member 46 are arranged in the direction in which the holes 46H of the third light-transmitting member 46 extend. For example, in a plan view, the holes 46H of the third light-transmitting member 46 may be arranged in a direction intersecting the first direction (X direction) and the second direction (Y direction). In addition, in a plan view, the holes 46H of the third light-transmitting member 46 may be arranged in a direction intersecting the first direction (X direction) and the second direction (Y direction). Fig. 18C or Fig.18D The third light-transmitting member 46 shown is arranged side by side in the direction in which the holes 46H extend.

[0161] As the material of the third light-transmitting member 46, the same material as that of the light-guiding member 10 can be used. The maximum thickness of the third light-transmitting member 46 in the third direction (Z direction) is preferably not less than 0.8 times and not more than 1.2 times the maximum thickness of the light-guiding member 10 in the third direction (Z direction). By making the maximum thickness of the third light-transmitting member 46 in the third direction (Z direction) not less than 0.8 times the maximum thickness of the light-guiding member 10 in the third direction (Z direction), it is easy to adjust the brightness of the light-emitting module by the third light-transmitting member 46. In addition, by making the third light-transmitting member 46 thicker, the strength of the light-emitting module is easily improved. By making the maximum thickness of the third light-transmitting member 46 in the third direction (Z direction) not more than 1.2 times the maximum thickness of the light-guiding member 10 in the third direction (Z direction), it is easy to miniaturize the light-emitting module in the third direction (Z direction).

[0162] This specification includes the following embodiments.

[0163] Item 1. A light emitting module comprising:

[0164] A light guide member having a first surface, a second surface opposite to the first surface, and a first through hole extending from the first surface to the second surface;

[0165] a light source portion, disposed in the first through hole of the light guide member;

[0166] a first light-transmitting member disposed in the first through hole of the light-guiding member and covering the light source; and

[0167] a reflective member disposed on the upper side of the light source and the upper side of the first light-transmitting member,

[0168] In a plan view, an outer edge of the reflective member is located outside an outer edge of the light source portion.

[0169] The reflecting member includes a resin member and a reflector having a lower refractive index than that of the resin member.

[0170] Item 2. The light-emitting module according to Item 1, wherein:

[0171] The reflector is a gas.

[0172] Item 3. The light-emitting module according to Item 1 or 2, wherein:

[0173] The resin member is polyethylene terephthalate resin, olefin resin, acrylic resin, silicone resin, polyurethane resin or epoxy resin.

[0174] Item 4. The light emitting module according to any one of Items 1 to 3, wherein:

[0175] The reflective member has a plurality of second through holes.

[0176] Item 5. The light-emitting module according to Item 4, wherein:

[0177] In a plan view, all of the plurality of second through holes are located away from the light source portion.

[0178] Item 6. The light-emitting module according to Item 4 or 5, wherein:

[0179] A second light-transmitting member is provided between the first light-transmitting member and the first reflecting member, and the second light-transmitting member is in contact with at least a portion of a side surface of the first reflecting member that defines the second through hole.

[0180] Item 7. The light-emitting module according to Item 6, wherein:

[0181] The second light-transmitting member is in contact with at least a portion of the upper surface of the first reflecting member.

[0182] Item 8. The light-emitting module according to Item 7, wherein:

[0183] The plurality of second through holes include adjacent third through holes and fourth through holes,

[0184] In cross-sectional view, the side surface of the first reflecting member that defines the third through hole, the upper surface of the first reflecting member between the third through hole and the fourth through hole, and the side surface of the first reflecting member that defines the fourth through hole are continuously covered.

[0185] Item 9. The light emitting module according to any one of Items 1 to 7, wherein:

[0186] In a plan view, an outer edge of the reflection member is located inside an outer edge of the first through hole.

[0187] Item 10. The light emitting module according to any one of Items 1 to 8, wherein:

[0188] In a plan view, an outer edge of the reflection member is located outside an outer edge of the first through hole.

[0189] Item 11. The light emitting module according to any one of Items 1 to 10, wherein:

[0190] have:

[0191] The plurality of light guide components include a first light guide portion, a second light guide portion, and a third light guide portion; and

[0192] A third light-transmitting member is adjacent to the second light-guiding portion and the third light-guiding portion,

[0193] In a first direction, the first light guide portion is adjacent to the second light guide portion, in a second direction orthogonal to the first direction, the first light guide portion is adjacent to the third light guide portion, in the first direction, the third light transmissive component is adjacent to the third light guide portion, and in the second direction, the third light transmissive component is adjacent to the second light guide portion.

[0194] Item 12. The light-emitting module according to Item 11, wherein:

[0195] The third light-transmitting member has an opening on the upper surface side.

[0196] Item 13. The light-emitting module according to Item 12, wherein:

[0197] The hole portion has a portion extending in a direction intersecting the first direction and the second direction in a plan view.

[0198] Item 14. A planar light source, comprising:

[0199] The light emitting module according to any one of items 1 to 13; and

[0200] The supporting member is configured with the light emitting module.

[0201] Above, with reference to specific examples, the embodiments of the present invention have been described. However, the present invention is not limited to these specific examples. Based on the above-mentioned embodiments of the present invention, all modes that can be appropriately designed and changed by those skilled in the art belong to the scope of the present invention as long as they include the gist of the present invention. In addition, within the scope of the thought of the present invention, those skilled in the art can think of various variations and modifications, and these variations and modifications also belong to the scope of the present invention.

Claims

1. A light emitting module, comprising: A plurality of light guide members having a first surface, a second surface opposite to the first surface, and a first through hole penetrating from the first surface to the second surface, and including a first light guide portion, a second light guide portion, and a third light guide portion; a light source portion, disposed in the first through hole of the light guide member; a first light-transmitting member, disposed in the first through hole of the light-guiding member and covering the light source; A reflective member disposed on an upper side of the light source and an upper side of the first light-transmitting member; as well as A third light-transmitting member is adjacent to the second light-guiding portion and the third light-guiding portion, In a plan view, the outer edge of the reflective member is located outside the outer edge of the light source portion. The reflecting member includes a resin member and a reflector having a lower refractive index than the resin member. In a first direction, the first light guide portion is adjacent to the second light guide portion, in a second direction orthogonal to the first direction, the first light guide portion is adjacent to the third light guide portion, in the first direction, the third light transmissive component is adjacent to the third light guide portion, and in the second direction, the third light transmissive component is adjacent to the second light guide portion.

2. The light emitting module according to claim 1, wherein: The third light-transmitting member has a hole portion opened on the upper surface side.

3. The light emitting module according to claim 2, wherein: The hole portion has a portion extending in a direction intersecting the first direction and the second direction in a plan view.

4. The light emitting module according to claim 1, wherein: In a plan view, an outer edge of the reflection member is located inside an outer edge of the first through hole.

5. The light emitting module according to claim 1, wherein: In a plan view, an outer edge of the reflection member is located outside an outer edge of the first through hole.

6. A planar light source, comprising: The light emitting module according to claim 1; and The supporting member is configured with the light emitting module.

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