JP6409669B2 - Light emitting device and manufacturing method thereof - Google Patents

Description

  The present invention relates to a light emitting device and a method for manufacturing the same.

In recent years, a light emitting element that emits desired light by combining a light emitting element such as a light emitting diode (LED) and a translucent member that contains a phosphor capable of converting the wavelength of light of the light emitting element and covers the surface of the light emitting element. The device is being used.
In the case where the light emitting device as described above is disposed at a position where it can be visually recognized from the outside, particularly when the light emitting element is not lit (hereinafter, the light emitting device may be described as an off state), the light transmission by the phosphor is not performed. It is desired to make the appearance color of the optical member less noticeable.

For example, in Patent Document 1, in a light-emitting device used as a light source for camera illumination such as a mobile phone, the appearance color is different from the color of the phosphor layer covering the light-emitting element, which impairs the aesthetics of the mobile phone or the like. It is disclosed to avoid this. Specifically, the appearance color is made inconspicuous by coloring a part of the surface of the sealing resin that seals the light emitting element into a color different from the appearance color of the sealing resin.
In Patent Document 2, a blue pigment or blue light scattering particles are dispersed in a wavelength conversion component including a yellow phosphor so that the light emitting device looks white when it is in an off state (that is, does not appear yellow). )) Is described.

JP 2009-302489 A JP 2014-107501 A

  The embodiment of the present invention has a configuration different from that of the above-mentioned patent document, and can reduce the visibility of the external color of the translucent member when the light emitting device is in the off state (that is, reduce the saturation). And it aims at providing the manufacturing method.

  Therefore, a light-emitting device according to an embodiment of the present invention includes a light-emitting element and a translucent member provided on an upper surface of the light-emitting element, and the translucent member has a row direction and / or a column in a plan view. A first light-transmitting material and a second light-transmitting material alternately disposed in the direction, wherein the first light-transmitting material includes a phosphor exhibiting a first hue, and the second light-transmitting material is the first light-transmitting material. A colorant exhibiting a second hue which is in a complementary color relationship to the other hue.

  Moreover, the manufacturing method of the light-emitting device according to the embodiment of the present invention includes a first step of preparing a light-emitting element, a first light-transmitting material including a phosphor exhibiting a first hue, and the first hue. A second step of preparing a second light-transmitting material containing a dye exhibiting a second hue that is complementary to the color; and the first light-transmitting material and the second light-transmitting material on the upper surface of the light-emitting element. A third step of forming one of the light-transmitting materials in the row direction and / or the column direction, and a step of forming the other light-transmitting material between the light-transmitting materials formed in the third step. 4 processes.

According to the light emitting device according to the embodiment of the present invention, it is possible to reduce the visibility of the appearance color of the translucent member when the light emitting device is in the off state (that is, lower the saturation).
Further, according to the method for manufacturing the light emitting device according to the embodiment of the present invention, the visibility of the appearance color of the translucent member when the light emitting device is in the off state can be reduced (that is, the saturation can be lowered). ) A light emitting device having a translucent member can be easily manufactured with high accuracy.

It is sectional drawing of the light-emitting device which concerns on Embodiment 1 of this invention. It is a top view of the light-emitting device of FIG. 1A. It is a top view of another light-emitting device concerning Embodiment 1 of the present invention. It is a top view of another light-emitting device concerning Embodiment 1 of the present invention. It is a schematic sectional drawing of the 1st process explaining the manufacturing method of the light-emitting device which concerns on Embodiment 1 of this invention. It is a schematic sectional drawing of the 3rd process explaining the manufacturing method of the light-emitting device which concerns on Embodiment 1 of this invention. It is a schematic sectional drawing of the 4th process explaining the manufacturing method of the light-emitting device which concerns on Embodiment 1 of this invention. It is a schematic sectional drawing of the 5th process explaining the manufacturing method of the light-emitting device which concerns on Embodiment 1 of this invention. It is sectional drawing of another light-emitting device which concerns on Embodiment 1 of this invention. It is sectional drawing of the light-emitting device which concerns on Embodiment 2 of this invention. Represents the Munsell hue circle.

Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate. However, the light-emitting device described below is for embodying the technical idea of the embodiment, and is not limited to the following. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the component parts do not limit the technical scope of the present invention, but are merely illustrative examples and may be exaggerated for clarity of explanation. is there. The embodiments and examples described below can be applied by appropriately combining the components.
In the present specification, the hue is represented by the Munsell hue ring, which is one of the color systems that quantitatively represent colors.

<Embodiment 1>
(Light emitting device)
FIG. 1A is a cross-sectional view of a light emitting device 10 according to Embodiment 1 of the present invention. FIG. 1B is a plan view of the light emitting device of FIG. 1A.
As shown in FIG. 1A, the light emitting device 10 according to the embodiment mainly includes a light emitting element 11 and a translucent member 12. The translucent member 12 is provided at least on the upper surface of the light emitting element 11. As shown in FIG. 1B, the translucent member 12 includes first translucent members 13 and second translucent members 14 that are alternately arranged in the row direction and / or the column direction.
Here, the upper surface of the light emitting element 11 refers to a surface opposite to the surface on which the light emitting element 11 is bonded to a mounting substrate or the like. The translucent member 12 may be provided on the side surface and the lower surface (surface opposite to the upper surface) of the light emitting element 11. In particular, it is preferable that the translucent material is provided up to the lower part of the side surface of the light emitting element 11 (up to the side surface of the electrode 11a). The light transmissive member provided on the side surface and the lower surface of the light emitting element 11 may be only one of the first light transmissive material 13 or the second light transmissive material 14, or the first light transmissive material 13 and the second light transmissive material. A translucent material different from the material 14 may be used.

  The first light transmissive material 13 includes a phosphor that exhibits a first hue when the light emitting device is in an off state. In the embodiment, it is assumed that the appearance color of the first light transmissive material 13 shows a hue equal to the first hue of the phosphor. Further, the second light transmissive material 14 contains a colorant that exhibits a second hue that is complementary to the first hue when the light emitting device is in the off state. In the embodiment, it is assumed that the appearance color of the second light transmissive material 14 shows a hue equal to the second hue of the colorant.

  Hue is one of the color attributes, and indicates the difference in color such as red, yellow, green, blue, and purple. The expression of the first hue (or the second hue) means that a human can recognize the first hue (or the second hue) with the naked eye under natural light. Natural light generally refers to non-artificial light such as sunlight, moonlight, etc., but in this specification, even artificial light is light that has been specifically created by humans (e.g., intentional flash or the like). Other than strong light, etc.) are included in natural light. That is, indoor incandescent bulbs, fluorescent lamps and the like are included in natural light.

  FIG. 6 shows the Munsell hue circle. The first hue refers to any one of the ten hues of the hue circle. For example, as the first hue of the embodiment, any one of the ten hues Y1 to Y10 of the Munsell hue ring shown in FIG. 4 can be selected. As a phosphor showing such a hue, for example, a YAG phosphor Is mentioned.

  The complementary color relationship means that the first hue and the second hue are mixed at an arbitrary ratio so that they appear to be achromatic (white, gray, or black). In this specification, the complementary color refers to a hue having a relationship facing the first hue in the Munsell hue circle, that is, located in the opposite direction, and further includes a hue adjacent to this hue as a complementary color. For example, the colors complementary to yellow (Y1 to Y10) are blue purple (PB1 to PB10), blue (B1 to B10), purple (P1 to P10), and yellowish green (GY1 to GY10). The complementary colors are purple (P1 to P10), red purple (RB1 to RB10), and bluish purple (PB1 to PB10). The complementary color relationship to red (R1 to R10) is blue-green. (BG1 to BG10), blue (B1 to B10), green (G1 to G10), and the like.

  For example, when using the 1st translucent material 13 which has the fluorescent substance which shows either Y1-Y10 of 10 hues of the Munsell hue ring shown by FIG. 6, the 2nd which has the coloring agent which shows either PB1-PB10. A translucent material 14 can be used.

  Note that the colorant preferably has the same or similar hue as the emission color of the light emitting element 11. Thereby, the transmittance | permeability with respect to the 2nd translucent material 14 (coloring agent) of the light of the light emitting element 11 becomes good, and the light absorption by the 2nd translucent material 14 can be reduced. Accordingly, the light from the light emitting element 11 and the light emitted from the light emitting element 11 and transmitted through the second light transmissive material 14 are wavelength-converted by passing through the first light transmissive material 13, so that light extraction is maintained. However, a light emitting device that emits a desired emission color can be obtained.

  As long as the first light transmissive material 13 and the second light transmissive material 14 are alternately arranged in the row direction and / or the column direction, various arrangements can be employed. For example, one of the first light-transmitting material 13 and the second light-transmitting material 14 is arranged in a staggered shape, a lattice shape, a matrix shape, or a line shape in plan view, and the other is arranged between them. . Here, the zigzag pattern, the lattice pattern, and the matrix pattern do not have to be configured by a strictly square combination in a plan view, and may be a polygon or a shape including a curve, for example, a circle, It may be an ellipse or a polygon with rounded corners. Further, the line shape is not constituted by a combination of strict straight lines in a plan view, and may be a curved line or a zigzag line.

The width of the first light transmissive material 13 and the second light transmissive material 14 in plan view is preferably 100 μm or less, for example, when the dimension of the light emitting element 11 in plan view is about 1000 μm × 1000 μm, and is 80 μm or less. More preferably, it is 70 μm or less.
The thickness of the translucent member 12 should just have the thickness which can fully wavelength-convert the light from the light emitting element 11, for example, about 1-300 micrometers is mentioned, About 10-250 micrometers, About 30-120 micrometers are mentioned. preferable. Moreover, it is preferable that the thickness of the 1st translucent material 13 and the 2nd translucent material 14 is the same, and it is preferable that the upper surface of the translucent member 12 is flush.

  In a plan view, the ratio of the first light transmissive material 13 and the second light transmissive material 14 on the top surface of the light emitting element 11 can be about 1: 1. Thereby, the visibility of the external color of the translucent member 12 can be reduced (that is, the saturation is lowered) while converting the light from the light emitting element 11 into a desired color.

  Specifically, the translucent member 12 having the first translucent member 13 and the second translucent member 14 has lower saturation than the first translucent member 13 when viewed as a whole. That is, it can be visually recognized as blackish. Furthermore, when the translucent member 12 is viewed as a whole, the saturation is preferably lower than when the second translucent material 14 is viewed alone. For example, the arrangement and ratio of the first light-transmitting material 13 and the second light-transmitting material 14, and the amount and type of the phosphor or colorant to be contained so that the saturation of the light-transmitting member 12 is 0 to 6 or less. Can be adjusted. Here, when the translucent member 12 is viewed as a whole, a viewer who visually recognizes the light emitting device (the translucent member 12) visually recognizes the distance from the translucent member 12 as about 1 m under natural light. Means the case.

  The translucent member 12 is preferably disposed so as to be in direct contact with the upper surface of the light emitting element 11 using its adhesiveness. Thereby, the wavelength of the light from the light emitting element 11 can be efficiently converted, and furthermore, high light extraction can be maintained. The translucent member 12 may be formed separately from the light emitting element 11, and both may be fixed by providing an adhesive or the like on the upper surface of the light emitting element 11 and / or the surface of the translucent member 12. Examples of the adhesive used here include translucent resins.

[Light emitting element 11]
As the light-emitting element 11, a light-emitting element such as a light-emitting diode or a laser generally used in this field can be used. For example, the nitride semiconductor _{(In X Al Y Ga 1-} XY N, 0 ≦ X, 0 ≦ Y, X + Y ≦ 1), GaP, III-V group compound semiconductor such as GaAs, ZnSe, II-VI group compound semiconductor Various semiconductors can be used. In the embodiment, for example, a light emitting element that emits blue light having an emission wavelength of about 400 to 500 nm can be used.

  The light emitting element 11 includes at least a semiconductor layer including a light emitting layer and positive and negative electrodes 11a. The light emitting element 11 may use either a positive or negative electrode 11a provided on the same side or a side provided on both sides. In particular, when a flip chip mounting type light emitting element having positive and negative electrodes 11a on the same surface side is used, the translucent member 12 can be formed on a relatively flat surface opposite to the surface having the electrodes. preferable.

  In addition, the light emitting element 11 may have a substrate for growing a semiconductor layer. Examples of the substrate include an insulating substrate such as sapphire, and an oxide substrate such as SiC, ZnO, Si, GaAs, diamond, and lithium niobate and neodymium gallate that are lattice-bonded to a nitride semiconductor. In particular, the substrate is preferably translucent. The substrate may be removed using a laser lift-off method or the like.

  The planar shape of the light emitting element 11 is not limited to a quadrangle, and may be a polygon such as a circle, an ellipse, a triangle, and a hexagon. The size and thickness of the light-emitting element can be selected as appropriate.

[Translucent member 12]
The translucent member 12 includes a first translucent material 13 that contains a phosphor that exhibits a first hue, and a second that contains a colorant that exhibits a second hue that is complementary to the first hue. The translucent material 14 is alternately arranged in the row direction and / or the column direction. The translucent member 12 as a whole preferably transmits 60% or more of the light emitted from the light emitting element 11, and further transmits 70%, 80% or 90% or more.

  The first light transmissive material 13 and the second light transmissive material 14 are, for example, a thermosetting resin, a thermoplastic resin, a modified resin thereof, or a resin as a base material for containing a phosphor or a colorant, respectively. It is preferable to contain a translucent material such as glass, such as a hybrid resin containing two or more kinds.

Specifically, as a base material of the translucent member 12 (the first translucent material 13 and the second translucent material 14), silicone resin, modified silicone resin, hybrid silicone resin, epoxy resin, modified epoxy resin, unsaturated Polyester resin, polyimide (PI) resin, modified polyimide resin, polyamide (PA) resin, polyethylene terephthalate resin, polybutylene terephthalate (PBT) resin, GF reinforced polyethylene terephthalate (GF-PET) resin, polycyclohexane terephthalate resin, polyphthalamide (PPA) resin, polycarbonate (PC) resin, polyphenylene sulfide (PPS) resin, polysulfone (PSF) resin, polyether sulfone (PES) resin, modified polyphenylene ether (m-PPE) resin, polyether ether Luketone (PEEK) resin, polyetherimide (PEI) resin, liquid crystal polymer (LCP) resin, ABS resin, phenol resin, acrylic resin, PBT resin, urea resin, BT resin, polyurethane resin, polyacetal (POM) resin, ultra-high Examples include molecular weight polyethylene (UHPE) resin, syndiotactic polystyrene (SPS) resin, amorphous polyarylate (PAR) resin, and fluororesin. You may use these individually or in combination of 2 or more types. In particular, from the viewpoint of heat resistance and weather resistance, the translucent member 12 preferably contains a silicone resin.
It is preferable that the 1st translucent material 13 and the 2nd translucent material 14 contain the same resin from an adhesive viewpoint.

A phosphor known in the art is used as long as the phosphor exhibits a first selectable hue when the light-emitting device is in an off state and can convert the wavelength of light emitted from the light-emitting element 11 into a desired emission color. can do. For example, yttrium-aluminum-garnet (YAG) phosphors activated with cerium, lutetium-aluminum-garnet (LAG) activated with cerium, nitrogen-containing calcium aluminosilicate (CaO- activated with europium and / or chromium) Al ₂ O ₃ —SiO ₂ ) -based phosphor, europium-activated silicate ((Sr, Ba) ₂ SiO ₄ ) -based phosphor, β-sialon phosphor, CASN-based or SCASN-based phosphor, etc. The phosphor may be a phosphor, a KSF phosphor (K ₂ SiF ₆ : Mn), a sulfide phosphor, a so-called nanocrystal, or a light emitting substance called a quantum dot. Examples of the luminescent substance include semiconductor materials such as II-VI group, III-V group, and IV-VI group semiconductors. Specifically, CdSe, core-shell type CdS _x Se _1-x / ZnS, GaP, etc. Highly dispersed particles. In particular, when a phosphor such as YAG or CASN is used and the first light-transmitting material 13 is visually recognized in a hue such as yellow, orange, or red, the appearance color of the light-transmitting member 12 (and thus the light-emitting device 10) is noticeable. However, by adopting the configuration of the translucent member 12 as in Embodiment 1, the appearance color of the translucent member 12 (that is, the light emitting device 10) can be made inconspicuous, and the light emitting device 10 is mounted. It is possible to avoid damaging the aesthetics of the module (for example, a mobile phone).

  The phosphor is preferably in the form of particles. The shape of the particles may be any of crushed, spherical, hollow and porous. The phosphor preferably has, for example, an average particle diameter (median diameter) of 100 μm or less, 50 μm or less, or 30 μm or less. The average particle diameter can be measured and calculated by processing a commercially available particle measuring instrument or particle size distribution measuring instrument or the like and an image obtained by SEM. The above average particle size S. S. S. It refers to the particle size obtained by the air permeation method in No (Fisher Sub Sieve Sizer's No).

  As the colorant, a known one or a commercially available one can be used as long as it shows a second hue complementary to the phosphor (first translucent material 13). For example, those having good compatibility with the above-described resins and the like and having translucency are preferable. Specifically, when it is made into an aqueous solution, the chromophore becomes a cation, a basic dye which contains a nitrogen atom in the molecule and shows basicity, an azo compound having a property of being directly dyed without mordanting, etc. Any of direct dyes, acidic dyes having an acidic group such as a sulfone group and a carboxyl group in the molecule, inorganic pigments, and organic pigments may be used. Further, any form of colorant called dry color, paste color, liquid color, master powder, master batch, color compound, or the like may be used. Of these, inorganic pigments are preferable, and specific examples include ultramarine and phthalocyanine pigments.

  As described above, when the first hue is any one of Y1 to Y10, the second hue is any one of BG1 to BG10, B1 to B10, and P1 to P10 of the ten hues of the Munsell hue ring. It is preferable. In this case, YAG, a silicate phosphor, or the like can be used as the phosphor, and an ultramarine, a phthalocyanine pigment, or the like can be used as the colorant.

  The 1st translucent material 13 and / or the 2nd translucent material 14 may contain the filler (for example, diffusion agent etc.). Examples thereof include silica, titanium oxide, zirconium oxide, magnesium oxide, aerosil, glass, glass fiber, filler such as wollastonite, aluminum nitride, and the like.

  As the translucent member, a translucent layer may be provided in addition to the first translucent material and the second translucent material. FIG. 4 is a cross-sectional view of another light emitting device 40 according to Embodiment 1 of the present invention. For example, as shown in FIG. 4, a light-transmitting layer 46 can be provided as a protective film on the first light-transmitting material 43 and the second light-transmitting material 44. Thereby, the 1st translucent material 43 and the 2nd translucent material 44 can be protected from external stress, dust, dust, etc. Furthermore, light extraction can be improved. When the light emitting device is in an off state, the protective film has a complementary color relationship between the first light-transmitting material 43 and the second light-transmitting material 44, so that the appearance color of the light-transmitting member 42 is visible in a plan view. It is provided so as not to prevent reduction (that is, lowering the saturation).

  Further, a light-transmitting layer 48 may be provided on the side surface side of the light-emitting element 11. Specifically, the translucent layer provided on the side surface of the light emitting element 11 is a first light transmitting material and / or a second light transmitting material provided on the side surface of the light emitting element 11 or on the side surface of the light emitting element 11. Can be formed on top. The shape can be appropriately selected such as a film shape or a fillet shape. By providing a light-transmitting layer on the side surface of the light-emitting element 11, the light-emitting element 11 can be protected from external stress, dust, dust, and the like.

In addition, a light-transmitting layer 45 may be provided as a third light-transmitting material between the first light-transmitting material 43 and the second light-transmitting material 44. The light-transmitting layer 45 provided between the first light-transmitting material 43 and the second light-transmitting material 44 includes the first light-transmitting material 43 and the second light-transmitting material 44 when the light emitting device is in the off state. Due to the complementary color relationship, it is provided so as not to prevent the visibility of the appearance color of the translucent member 42 in plan view from being reduced (that is, to lower the saturation). For example, the third light-transmitting material is the same as the first light-transmitting material 13 or the second light-transmitting material 14, using the above-described light-transmitting material, colorless, for example, a blackish low-saturation color. Can be used. Alternatively, the first light-transmitting material, the second light-transmitting material, and the third light-transmitting material are in a complementary color relationship when the light emitting device is in an off state (for example, the three light-transmitting materials have red, blue, and green hues, respectively) The hue of the third light-transmitting material may be determined.
The transparent layers 45, 46 and 48 as described above may contain a filler or the like.

[Other parts]
In addition to the above-described members, the light-emitting device may include, for example, light reflecting members 47 provided on the side and bottom surfaces of the light-emitting element 11. Specifically, the light reflecting member 47 includes a side surface of the light emitting element 11 or a side surface of the translucent member 42 that covers the side surface of the light emitting element 11 and a lower surface of the light emitting element 11 (excluding a connection surface of the electrode 11a). It can be provided to cover. Thereby, the light of the light emitting element 11 can be efficiently radiate | emitted to the upper surface side which is a light-projection surface. The light extraction can be further improved by inclining the inner side surface of the light reflective member 47 outward from the lower surface of the light emitting element 11 to the upper surface side. If the light reflective member 47 is formed so as to cover the side surface of the light transmissive member 42 on the upper surface of the light emitting element 11, the light emitting device 40 having a good parting (that is, high light intensity in the light emitting direction) is formed. can do.

  As a material of the light reflective member, for example, a material obtained by mixing a light reflective substance with a base material such as ceramics or the above-described resin can be used. Examples of the light reflecting material include titanium dioxide, silicon dioxide, zirconium dioxide, potassium titanate, alumina, aluminum nitride, silicon nitride, boron nitride, mullite, niobium oxide, zinc oxide, barium sulfate, various rare earth oxides (for example, oxidized Yttrium, gadolinium oxide) and the like. The light reflective material is preferably about 20 to 80% by weight, more preferably about 30 to 70% by weight, based on the total weight of the light reflective member. Thereby, intensity | strength can be ensured, raising the light reflectivity of a light reflective member.

(Method for manufacturing light emitting device)
The manufacturing method of the light-emitting device 10 of Embodiment 1 mainly includes a step of preparing the light-emitting element 11, a step of preparing the first light-transmitting material 13 and the second light-transmitting 14 material constituting the light-transmissive member 12, and A step of patterning either one of the first light transmissive material 13 or the second light transmissive material 14 on the upper surface of the light emitting element 11, and a step of forming the other light transmissive material between the light transmissive materials formed in advance. Including.
The translucent member 12 may be formed on a sheet, for example, separately from the light emitting element 11, and the translucent member may be peeled off and fixed to the upper surface of the light emitting element 11 together with the sheet. .

[First step]
FIG. 3A is a schematic cross-sectional view of a first step for explaining a method for manufacturing a light-emitting device according to an embodiment of the present invention. In the first step, the light emitting element 11 is prepared. The light emitting element 11 can be prepared as described above. In the embodiment, a flip-chip mounting type light emitting element 11 having positive and negative electrodes 11a on the same surface side can be used. One or a plurality of light emitting elements 11 may be prepared. As shown in FIG. 3A, the light emitting element 11 is placed on a base 49 made of, for example, a resin such as vinyl chloride, alumina, aluminum nitride, or the like with the upper surface (the surface opposite to the side having the electrode 11a) side up. Can be placed. As will be described later, when the base material 49 is bent to cut the translucent material into individual pieces for each light emitting device, it is preferable to use the base material 49 having flexibility. In particular, it is preferable to use a sheet-like substrate 49 made of a resin such as vinyl chloride.

[Second step]
In the second step, a first light-transmitting material 13 including a phosphor exhibiting a first hue and a second light-transmitting material including a colorant exhibiting a second hue that is complementary to the first hue. 14 and prepare.
The first light transmissive material 13 can be prepared, for example, by mixing a phosphor exhibiting the first hue and an arbitrarily selectable filler with a resin as a base material. For example, the phosphor can be contained in an amount of about 50 to 90% by weight with respect to the total weight of the first light transmissive material 13, respectively. The first light transmissive material 13 may further contain a solvent such as an organic solvent. The type of organic solvent can be appropriately selected depending on the type of resin used, the type of phosphor, and the like. For example, examples of the solvent include organic solvents such as n-hexane, n-heptane, dimethyl carbonate, toluene, acetone, and isopropyl alcohol.

  The second light transmissive material 14 can be prepared, for example, by mixing a colorant that exhibits the second hue, a resin that is a base material, and an arbitrarily selectable filler. The colorant is prepared, for example, by containing about 50 to 90% by weight with respect to the total weight of the second light transmissive material 14, respectively. The second light transmissive material 14 may further contain a solvent such as an organic solvent. The type of organic solvent can be appropriately selected depending on the type of resin used, the type of colorant, and the like.

  In the third step and / or the fourth step, when the first light transmissive material 13 and the second light transmissive material 14 are formed using a dry or wet spray method, a solvent, a thermosetting resin, A slurry containing a phosphor or a colorant such as particles can be prepared. The slurry can be adjusted to about 0.01 to 1000 mPa · s, and more preferably about 0.1 to 100 mPa · s. Specifically, a slurry in which phosphor or colorant: silicone resin: n-solvent is mixed at a mass ratio of 2 to 40: 5 to 20:10 to 200 can be used. By mixing at such a ratio, spraying is facilitated, and the phosphor or the colorant can be uniformly attached to the upper surface of the light emitting element 11. In order to adjust the viscosity or fluidity, a viscosity modifier (for example, silica fine particles) or the like may be added to the slurry.

[Third step]
FIG. 3B is a schematic cross-sectional view of a third step for explaining the method for manufacturing the light-emitting device according to Embodiment 1 of the present invention. In the third step, one of the first light transmissive material 13 and the second light transmissive material 14 is formed on the upper surface of the light emitting element 11 with an interval in the row direction and / or the column direction. Hereinafter, the translucent material formed in the third step may be described as one translucent material. Any of the light-transmitting materials formed in the third step is preferably formed in a staggered shape, a lattice shape, a matrix shape, or a line shape.
Note that the translucent material formed in the third step may be formed other than the upper surface of the light emitting element 11. For example, you may form on base | substrates, such as the sheet | seat in which the side surface of the light emitting element 11, and the light emitting element 11 are arrange | positioned. Further, the translucent material formed other than the upper surface of the light emitting element 11 may not be formed with a space in the row direction and / or the column direction. For example, the light emitting element 11 may be continuously formed on the side surface and / or the substrate.

  In the third step, either the first light transmissive material 13 or the second light transmissive material 14 may be formed as one light transmissive material, but the light transmissive material is also formed on the side surface of the light emitting element 11. In this case, it is preferable that the outermost translucent material covering the side surface is formed to be the first translucent material 13. Thereby, since the light emitted from the side surface of the light emitting element 11 finally passes through the first light-transmitting material 13 and is emitted, the light whose wavelength is converted to a desired wavelength can be extracted.

In the third step, the light-transmitting material is formed by a printing method, a spray method, potting, compression molding or the like, an electrostatic coating method, a sheet-like phosphor or a coloring agent, or electrophoretic deposition. After a phosphor or colorant is attached by the method, a continuous light-transmitting material is provided by a method of impregnating a base material (for example, a transparent resin), laser processing, etching, lift-off method, etc. A method of patterning the light-transmitting material by removing a part thereof is preferable. In particular, according to laser processing, it is possible to easily form a fine pattern on a small plane such as the upper surface of the light emitting element 11 by appropriately adjusting the laser irradiation conditions.
In addition to the above method, a mask or a resist may be provided and formed by a printing method, a spray method, or the like, or a pattern may be formed by a drawing method or molding such as compression molding.

When the spray method is used, a thin layer can be obtained. Therefore, a desired thickness can be adjusted by stacking a plurality of thin layers. Furthermore, the distribution of the phosphor or the colorant can be made uniform.
Moreover, when forming a light-transmitting material on the upper surface and the side surface of the light-emitting element 11, according to the spray method, the light-transmitting material can be formed at the corners of the light-emitting element 11 so as to be thicker than other portions. it can. More specifically, the light-transmitting material can be formed so that the thickness is increased in the vicinity of the corner of the light-emitting element 11 and the thickness is decreased toward the lower part of the side surface of the light-emitting element 11 (the surface side having the electrode 11a). When a light-transmitting material having such a shape is formed and its outer surface is formed so as to be covered with the above-described light-reflecting member 47, the light extraction of the light-emitting device can be improved.

[Fourth step]
FIG. 3C is a schematic cross-sectional view of a fourth step for describing the method for manufacturing the light-emitting device according to Embodiment 1 of the present invention. In the fourth step, the other light transmissive material is formed between the light transmissive materials formed in the third step. Hereinafter, the translucent material formed in the fourth step may be referred to as the other translucent material. Note that the translucent material formed in the fourth step may be formed other than between the translucent materials formed in the third step. For example, it may be formed on the translucent material formed in the third step, on the side surface of the light emitting element 11, on the base 49 on which the light emitting element 11 is disposed, and the like. The translucent material provided other than the upper surface of the light emitting element 11 may not be formed at intervals in the row direction and / or the column direction, and may be formed continuously, for example.

  The other light transmissive material can be formed by the same method as the light transmissive material formed in the third step. For example, by using a printing method, the other light-transmitting material can be easily arranged between the one light-transmitting materials formed in the third step with a gap in the row direction and / or the column direction. .

  Alternatively, as shown in FIG. 3C, the other light-transmitting material can be formed by a spray method. The spray method is preferable because the other light-transmitting material can be formed thin and the member cost can be reduced. According to the spray method, since the other light-transmitting material is also applied onto one light-transmitting material formed in the third step, the light-transmitting material formed in the third step in the fifth step described later. It is necessary to remove a part of the other translucent material so that the upper surface of the material is exposed.

  The other translucent material formed in the fourth step covers the upper surface and the side surface of the one translucent material formed in the third step, and the translucent material formed in the third step. It is preferable to be formed at a height higher than the height. As a result, in the fifth step, when the translucent material is partially removed by, for example, cutting or the like so that one of the translucent materials formed in the third step is exposed, one of the translucent materials is peeled off. And can be easily removed.

[Fifth step]
FIG. 3D is a schematic cross-sectional view of a fifth step for describing the method for manufacturing the light-emitting device according to Embodiment 1 of the present invention. In the fifth step, as described above, when the other translucent material formed in the fourth step is also formed on the translucent material formed in the third step, in the third step, At least a part of the other translucent material formed in the fourth step is removed so that the formed translucent material is exposed. Thereby, the translucent member 12 which has the 1st translucent material 13 and the 2nd translucent material 14 which are arrange | positioned alternately in a row direction and / or a column direction can be formed in planar view.
When the other light-transmitting material is formed in the fourth step so that the upper surface of the light-transmitting material formed in the third step is exposed, the fifth step can be omitted. Even when the other light-transmitting material is formed so that the upper surface of the light-transmitting material formed in the third step is exposed, in order to adjust the thickness of the light-transmitting material and the height of the upper surface, You may perform the process of 5.

  The removal of the translucent material in the fifth step can be performed by a known method such as grinding or polishing.

  The translucent material to be removed may be only the other translucent material on the upper surface of the translucent material formed in the third step, or a part of the translucent material formed in the third step may be removed at the same time. May be. For example, by cutting in parallel with the upper surface of the substrate such as the light emitting element 11 or the sheet, one translucent material and the other translucent material formed between the upper surface and the upper surface can be removed simultaneously. it can. Thereby, the upper surface of the translucent member 12 obtained can be easily made flush.

  Although the embodiment in which the light-transmitting member 12 is directly formed on the upper surface of the light-emitting element 11 has been described above, the light-transmitting member 12 that is separately formed is attached to the adhesive force of the light-transmitting member 12, the light-transmitting member 12, or the light-emitting element 11. You may fix to the upper surface of the light emitting element 11 by providing an adhesive agent etc. on an upper surface. For example, the translucent member 12 having the above-described configuration can be formed on a sheet, and the entire sheet can be fixed on the light emitting element 11. The sheet may be removed, or may be used as a part of the light emitting device 10 when a translucent sheet (for example, made of silicone resin) is used. The light emitting element 11 may be fixed so as to be fixed on the translucent member 12.

[Other processes]
After the above steps, other steps can be appropriately performed. Examples of the other steps include a singulation step, a step of forming the above-described transparent layer, and a step of forming a light reflective member.

(Individualization process)
The singulation step is, for example, a case where the light emitting element 11 is disposed on a base 49 such as a sheet and the translucent member 12 is formed on the upper surface thereof. In the third step and / or the fourth step, In the case where the light-transmitting material is continuously provided from the light emitting element 11 to the base 49, it can be appropriately performed to separate the light emitting devices 10 into individual pieces. For example, when a flexible member such as a sheet is used as the base 49, the translucent member 12 can be easily cut by the tensile force applied to the translucent member 12 by curving the sheet. Specifically, the translucent member 12 has a low adhesive force with other members, for example, in a portion provided near the boundary between the light emitting element 11 and the substrate (that is, on the lower side of the side surface of the light emitting element 11). Therefore, when a tensile force is applied to the portion, the portion is stretched to facilitate cutting. The cutting position can be adjusted by the configuration of the translucent member 12, the condition of the tensile force, and the like. When the translucent member 12 is cut in this way, a cutting allowance is not required as compared with a cutting method such as dicing. Therefore, the translucent member 12 can be formed by closely arranging the light emitting elements 11, and the light emitting device 10 can be formed with high productivity.

  As a method of curving the base 49, a jig such as a spatula is used to squeeze the light-emitting element 11 from the lower surface of the base 49 with a pin or the like from the lower surface (the surface opposite to the surface on which the light-emitting element 11 is disposed). A desired method can be selected as appropriate, such as pushing up. Further, the translucent member 12 may be cut by pulling the base body 49 in the plane direction and expanding and contracting the base body 49. A combination of these methods may be used. The singulation may be performed by dicing or the like.

(Translucent layer forming process)
The light-transmitting layer 46 provided on the first light-transmitting material 13 and the second light-transmitting material 14 as the protective film is formed on the light-transmitting member 12 provided on the light-emitting element 11 by, for example, the above-described resin or the like. May be formed by spraying, potting, printing, or the like, or a sheet-like resin, flat glass or the like may be prepared in advance and disposed as the light-transmitting layer 46 on the light-transmitting member 12. Good.

  In addition, the translucent layer 48 provided on the side surface of the light emitting element 11 is formed, for example, by forming the translucent member 12 separately from the light emitting element 11, and the upper surface of the light emitting element 11 and / or the surface of the translucent member 12. In the case of fixing with an adhesive or the like, it can be formed by using a translucent adhesive. Specifically, when a light-transmitting adhesive or the like is disposed on the upper surface of the light-emitting element 11 and / or the surface of the light-transmitting member 12 and the light-emitting element 11 and the light-transmitting member 12 are pressed and bonded, An adhesive between the element 11 and the translucent member 12 is extruded and can be provided so as to cover the side surface of the light emitting element 11. The translucent layer 48 formed in this way is formed into a shape having an inclined surface that spreads outward from the lower surface (electrode) side to the upper surface side of the light emitting element 11 (ie, fillet shape). be able to. Not limited to this formation method, it may be formed so as to surround the light emitting element 11 so as to cover the side surface of the light emitting element 11, or may be formed by compression molding, transfer molding or the like.

  The light-transmitting layer 45 provided between the first light-transmitting material 13 and the second light-transmitting material 14 as the third light-transmitting material is, for example, the same method as the first light-transmitting material and the second light-transmitting material. Can be formed.

(Light reflecting member forming step)
The light reflective member 47 provided on the side and the lower surface of the light emitting element 11 covers the side surface of the light emitting element 11 and the surface having the electrode 11a by, for example, printing, compression molding using a mold, transfer molding, or the like. Can be formed. Moreover, you may form so that the side surface of the translucent member 12 may be coat | covered. As a result, a light-emitting device with good parting can be formed. When the translucent layer 48 is formed on the side surface of the light emitting element 11, it is preferable to form the light reflective member 47 so as to cover the translucent layer 48. When the outer surface of the translucent layer 48 has an inclined surface as described above, the light reflective member 47 having the inclined surface can be formed, and the light extraction of the light emitting element can be improved.

<Embodiment 2>
FIG. 5 is a cross-sectional view of a light emitting device 50 according to Embodiment 2 of the present invention. In the second embodiment, the configuration of the translucent member 52 is different from that of the first embodiment. The translucent member 52 of the second embodiment has one of the first translucent material 53 and the second translucent material 54 (in the second embodiment, the second translucent material 54) on the entire upper surface of the light emitting element 11 in a cross-sectional view. ) And the other light transmissive material (in the second embodiment, the first light transmissive material 53) is disposed in the row direction and / or the column direction. Even in this case, in the plan view, the first light transmissive material 53 and the second light transmissive material 54 can be alternately viewed in the row direction and / or the column direction, and the visibility of the appearance color of the light transmissive member 52 is visible. Can be reduced.

  In this case, nothing is arranged between the other light-transmitting materials alternately arranged in the row direction and / or the column direction on one light-transmitting material, that is, an uneven shape corresponding to the thickness of the other light-transmitting material. The translucent member 52 may be provided, or the translucent layer 55 may be disposed as the third translucent material so that the surface of the translucent member 52 is substantially flat.

  Below, the light-emitting device of the Example which concerns on Embodiment 1 of this invention, and its manufacturing method are demonstrated in detail based on drawing.

<Example>
(Light emitting device)
As shown in FIGS. 1A and 1B, the light emitting device 10 according to the example includes a light emitting element 11 and a translucent member 12 provided on the upper surface of the light emitting element 11.
The light emitting element 11 is formed of a laminate of GaN-based nitride semiconductor layers, and can emit blue light having an emission wavelength of about 400 nm. The light emitting element 11 has positive and negative electrodes 11a on the same surface. The dimensions of the light emitting element 11 are, for example, 1000 μm × 1000 μm and a thickness of 150 μm in plan view.

  A translucent member 12 is provided on the upper surface of the light emitting element 11 (the surface opposite to the surface having the electrode 11a). The translucent member 12 of an Example has the 1st translucent material 13 and the 2nd translucent material 14 which are arrange | positioned alternately in the matrix direction in planar view in planar view.

The first light-transmitting material 13 includes a YAG phosphor showing a first hue, yellow in the embodiment, in a phenyl silicone resin as a base material. The YAG phosphor exhibits 10 hues 7Y9 / 12 in the Munsell hue ring under natural light. Moreover, the 1st translucent material 13 contains the Aerosil which is a nano filler as a filler. The weight ratio can be YAG phosphor: phenyl silicone resin: filler (Aerosil) = 15: 10: 1.
The second light-transmitting material 14 contains, in the phenyl silicone resin that is the base material, a second hue that is complementary to the first hue, that is, ultramarine that is a colorant that exhibits dark blue. This colorant exhibits 5PB7 / 10 with 10 hues of Munsell hue ring. The second light transmissive material 14 includes a diffusing agent. The weight ratio can be set to colorant (ultramarine): phenyl silicone resin: diffusion agent = 0.3-5: 100: 0.3-1.

  The upper surface of the 1st translucent material 13 and the 2nd translucent material 14 of an Example is flush, and those thickness is 30 micrometers. The widths of the first light transmissive material 13 and the second light transmissive material 14 can both be 50 μm μm. In the example, the ratio of the first light transmissive material 13 and the second light transmissive material 14 on the upper surface of the light emitting element 11 is 1: 1.

  In the embodiment, the first translucent member 13 of the translucent member 12 can be formed to cover the side surface of the light emitting element 11. With such a configuration, it is possible to form the light-emitting device 10 having a wide light distribution that emits desired light.

  The light-emitting device 10 having the light-transmitting member 12 configured as described above includes a first light-transmitting material 13 and a second light-transmitting material 14 that are in a complementary color relationship when the light-emitting element 11 is not lit under natural light. Since the pattern is formed, the visibility of the appearance color of the translucent member 12 can be reduced in a plan view, that is, it can be visually recognized as blackish. That is, the saturation of the translucent member can be reduced as compared with the translucent member made of only the first translucent material 13 including the YAG phosphor. Specifically, the saturation can be reduced to about 2 to 4 as compared with the above-described translucent member made of only the first translucent material. In addition, it is possible to avoid greatly reducing the light extraction of the light emitting element 11. Accordingly, when the light emitting device is mounted at a position where the light emitting module can be visually recognized from the outside (for example, when mounted on a flash light source or the like of a mobile phone), the light emitting module depends on the color of the translucent member 12. Can be prevented from detracting from the aesthetics. In particular, since the camera part of the mobile phone employs many blackish colors, the light-emitting device is not turned on, and by using the translucent member 12 with a dark color with low saturation as in the embodiment, The color of the light emitting device can be made inconspicuous.

<Modification 1>
FIG. 2A is a plan view of another light-emitting device according to Embodiment 1 of the present invention. In Modification 1, as shown in FIG. 2A, the first light-transmitting material 23 and the second light-transmitting material 24 of the light-transmissive member 22 are the same as the light-emitting device 10 of the embodiment except that the shapes are linear. .

<Modification 2>
FIG. 2B is a plan view of another light-emitting device according to Embodiment 1 of the present invention. In the second modification, as shown in FIG. 2B, the first light-transmitting material 33 of the light-transmitting member 32 has a matrix shape, and the second light-transmitting material 34 has a lattice shape. It is. The second light transmissive material 34 may have a matrix shape, and the first light transmissive material 33 may have a lattice shape.

(Method for manufacturing light emitting device)
In the method for manufacturing the light emitting device 10 of the example, first, as shown in FIG. 3A, the light emitting element 11 is prepared. For example, as described above, the light-emitting element 11 includes a substrate, a stack of GaN-based nitride semiconductor layers, and positive and negative electrodes 11a provided on the same surface, and emits blue light having an emission wavelength of about 400 nm. Can be prepared. The light emitting element 11 can be prepared having a size of 1000 μm × 1000 μm and a thickness of 150 μm in plan view.
In the embodiment, the light emitting element 11 is placed on a flexible sheet-like base 49 with the substrate side facing up.

  Then, the 1st translucent material 13 and the 2nd translucent material 14 are prepared. In the embodiment, the first translucent material 13 to be prepared may be a mixture of a phenyl silicone resin and a YAG phosphor, dimethyl carbonate as a solvent, and aerosil which is a nanofiller as a filler. The weight ratio can be, for example, YAG phosphor: phenyl silicone resin: solvent (dimethyl carbonate): filler (Aerosil) = 15: 10: 25: 1. Moreover, the 2nd translucent material 14 to prepare can use what mixed the ultramarine which is a dark blue colorant, and a spreading | diffusion agent in the phenyl-type silicone resin. The weight ratio can be, for example, colorant (ultramarine): phenyl silicone resin: diffusion agent = 0.3-5: 100: 0.3-1.

  In the embodiment, as shown in FIG. 3A, the prepared second light-transmitting material 14a is applied to the entire surface of the light-emitting element 11 by a desired method such as a direct printing method, and after curing, second irradiation is performed by laser irradiation. A part of the translucent material 14a is removed to form a pattern.

Specifically, for example, a laser having a wavelength of about 355 nm or less can be used. Irradiation conditions (spot diameter, intensity, pulse repetition frequency, moving speed, etc.) are appropriately adjusted according to the material, thickness, and pattern to be formed. For example, when the staggered translucent member 12 is formed as in the embodiment, a laser having a wavelength of about 355 nm, a spot diameter of about 10 to 30 μm, a pulse energy of about 30 μJ, and a frequency of about 200 kHz is scanned at a scanning speed of about 400 mm / s. Thus, by irradiating the second light transmissive material 14a at a constant interval, a part of the second light transmissive material 14a formed on the entire top surface of the light emitting element 11 can be removed, and a pattern can be formed. In addition, for example, irradiation may be performed with a wavelength of 10.6 μm, a spot diameter of 70 to 120 μm, an average output of 30 W, a frequency of 25 kHz, and a scanning speed of 500 to 12000 mm / s.
In the embodiment, the second light transmissive material 14a is formed in a staggered pattern in which a substantially rectangular shape of 50 μm × 50 μm is provided at intervals of 50 μm in plan view. Its thickness can be 30 μm or more. And the prepared 1st translucent material 13a is formed in the part from which the 2nd translucent material 14a was removed by desired methods, such as a spray method. In the embodiment, the film can be laminated a plurality of times by a spray method so as to have a desired thickness (30 μm in the embodiment) or more.

  Thereafter, the first light transmissive material 13a is cured, and as shown in FIG. 3C, the first light transmissive material 13a and the second light transmissive material 14a formed on the second light transmissive material 14a by grinding, polishing, etc. By removing a part, the upper surface of the 2nd translucent material 14 is exposed. Thereby, the translucent member 22 having the staggered first translucent material 13 and the second translucent material 14 can be formed on the light emitting element 11. The light transmissive material can be removed in parallel to the upper surface of the light emitting element 11 and is preferably removed so that the upper surfaces of the first light transmissive material 13 and the second light transmissive material 14 are flush with each other.

When forming a translucent member having the first translucent material and the second translucent material in the form of a line, matrix or lattice, the range of the translucent material to be removed is changed by changing the laser irradiation position. It can be formed by adjusting.
The translucent member 12 may be formed on the side surface of the light emitting element 11 and the base 49. In the embodiment, the first light transmissive material 13 and / or the second light transmissive material 14 is also formed on the side surface of the light emitting element 11.

  Next, the light emitting element 11 provided with the translucent member 12 is divided into individual light emitting devices 10. Note that the light-transmitting layer and the light-reflecting member described above may be appropriately formed before and after individualization. The singulation can be performed, for example, by squeezing a flexible substrate from the lower surface side of the substrate with a jig such as a spatula. Thereby, the translucent member 12 can be cut and separated into individual light emitting devices.

  In the manufacturing method of the light emitting device as described above, a fine pattern can be easily formed on the upper surface of the light emitting element. That is, a light-emitting device having a light-transmitting member that can reduce the visibility of the appearance color of the light-transmitting member when the light-emitting device is in an off state can be manufactured with high accuracy and simplicity.

  The light emitting device according to the embodiment can be used for various light emitting devices such as an illumination light source, various indicator light sources, an in-vehicle light source, a display light source, a liquid crystal backlight light source, a sensor light source, and a traffic light. In particular, it is useful as a flash light source for cameras and mobile phones.

10, 40, 50 Light-emitting device 11 Light-emitting element 11a Electrode 12, 22, 32, 42, 52 Translucent member 13, 13a, 23, 33, 43, 53 First translucent material 14, 14a, 24, 34, 44 , 54 Second light-transmitting material 47 Light-reflective member 45, 55, 46, 56, 48 Light-transmitting layer 49 Base

Claims (18)

A light emitting element;
A translucent member provided on the upper surface of the light emitting element,
The translucent member has a first translucent material and a second translucent material that are alternately arranged in the row direction and / or the column direction in plan view,
The first translucent material includes a phosphor exhibiting a first hue,
The light-emitting device, wherein the second light-transmitting material contains a colorant that exhibits a second hue that is complementary to the first hue. The first hue is one hue in 20 hues of the Munsell hue circle,
2. The light emitting device according to claim 1, wherein the second hue is a hue facing the first hue and a hue adjacent to the hue in the Munsell hue ring.   3. The light emitting device according to claim 1, wherein one of the first light transmissive material and the second light transmissive material is disposed in a staggered pattern, a lattice shape, a matrix shape, or a line shape, and the other is disposed therebetween. .   The light emitting device according to claim 1, wherein upper surfaces of the first light transmitting material and the second light transmitting material are substantially on the same surface.   The light emitting device according to any one of claims 1 to 4, wherein a width of the first light transmissive material and the second light transmissive material is 100 µm or less.   The light emitting device according to claim 1, wherein the phosphor is a YAG phosphor, and the colorant is a blue colorant. The first hue is any one of ten hues Y1 to Y10 of the Munsell hue ring,
The light emitting device according to claim 1, wherein the second hue is any one of PB 1 to PB 10, B 1 to B 10, and P 1 to P 10 of ten hues of a Munsell hue ring.   The light emitting device according to claim 1, wherein the first light transmissive material and the second light transmissive material further include the same resin.   The light emitting device according to any one of claims 1 to 8, wherein when the translucent member is viewed as a whole, the saturation is lower than that of the first translucent material.   The light emitting device according to claim 1, wherein the light emitting element emits blue light. A first step of preparing a light emitting element;
A second translucent material including a first translucent material including a phosphor exhibiting a first hue and a second translucent material including a dye exhibiting a second hue that is complementary to the first hue. Process,
A third step of forming one of the first light-transmitting material and the second light-transmitting material on the upper surface of the light-emitting element with an interval in the row direction and / or the column direction;
And a fourth step of forming the other light-transmitting material between the light-transmitting materials formed in the third step. In the fourth step, the other light transmitting material is formed on the upper surface of the light emitting element and the light transmitting material formed in the third step,
12. The method according to claim 11, further comprising a fifth step of removing a part of the translucent material and forming a translucent member so that an upper surface of the translucent material formed in the third step is exposed. The manufacturing method of the light-emitting device of description.   The method for manufacturing a light-emitting device according to claim 11 or 12, wherein in the third step, the light-transmitting material is formed in a staggered shape, a lattice shape, a matrix shape, or a line shape.   The method for manufacturing a light-emitting device according to claim 11, wherein in the third step, the light-transmitting material disposed on the upper surface of the light-emitting element is formed by laser processing.   The method for manufacturing a light emitting device according to claim 11, wherein in the fourth step, the other light transmitting material is formed by a spray method.   The manufacturing of the light emitting device according to any one of claims 11 to 15, wherein in the fourth step, the other light transmitting material is formed thicker than the thickness of the light transmitting material formed in the third step. Method.   The said 5th process WHEREIN: The said translucent material formed at the said 4th process is removed so that it may become substantially the same surface as the said translucent material formed at the said 3rd process. The manufacturing method of the light-emitting device as described in one.   The method for manufacturing a light emitting device according to claim 11, wherein the first light transmissive material and the second light transmissive material are formed with a width of 100 μm or less.