JP2010103349A - Method of manufacturing light emitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a light emitting device capable of radiating a mixed color controlled in weight of phosphor particles and reduced in chromaticity variation. <P>SOLUTION: The method of manufacturing the light emitting device including a light emitting element radiating a primary light and a first light-transmissive resin mixed with the phosphor particles absorbing the primary light to radiate a wavelength converted light and radiating a mixed light containing the primary light and the wavelength converted light is characterized by comprising the steps of determining in advance the chromaticity dependency of the mixed light on at least one of the wavelength of the primary light and a light output from the primary light; measuring at least one of the wavelength of the primary light and the light output from the primary light per light emitting element; obtaining the amount of phosphor particles required to set the chromaticity of the mixed light within a predetermined range based on the obtained chromaticity dependency of the mixed light on at least one out of the wavelength of the primary light and the light output from the primary light and at least one out of the measured wavelength of the primary light and the measured light output from the primary light; and covering the light emitting element. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

  White light emitting devices using nitride LEDs instead of cold cathode tubes, incandescent bulbs, and phosphors have come to be used as illumination light sources and backlight light sources for display devices. A white light emitting device using an LED (light emitting element) can be easily reduced in power consumption, downsized, and thinned.

  The chromaticity of such a white light-emitting device is determined by the light output of the light-emitting element used, the wavelength, and the amount of phosphor that emits wavelength-converted light. In a normal manufacturing process, an average value such as light output and wavelength is obtained in advance, a required amount of the phosphor is calculated using the average value, mixed with a resin solution, and coated so as to cover the light emitting element.

  However, the light output, wavelength, and the like of the light emitting element have a distribution in the wafer, and the chromaticity variation (variation) of the mixed light tends to occur. For this reason, for example, in the case of a backlight light source using a plurality of light emitting devices, there is a problem that it is difficult to obtain uniform image quality due to chromaticity variation on the surface of the light guide plate.

  There is a technical disclosure example regarding a white light emitting device in which chromaticity variation of a light emitting unit is suppressed and a manufacturing method thereof (Patent Document 1). This example of technical disclosure has a phosphor mixed resin layer in which the coating thickness is set in accordance with the peak wavelength of the light emitting element chip.

However, even if this example of technical disclosure is used, it is not sufficient to suppress chromaticity variations that occur based on the distribution of wavelength and light output within the wafer.
JP 2007-66969 A

  Provided is a method for manufacturing a light emitting device capable of emitting a mixed color in which the weight of phosphor particles is controlled and chromaticity variation is reduced.

  According to one aspect of the present invention, a light-emitting element capable of emitting primary light, and a first translucent resin mixed with phosphor particles capable of absorbing the primary light and emitting wavelength-converted light, A light emitting device that emits mixed light including the primary light and the wavelength-converted light, wherein at least one of the wavelength of the primary light and the light output of the primary light Determining in advance the dependency of the chromaticity of the mixed light on the light, measuring at least one of the wavelength of the primary light or the light output of the primary light for each light emitting element, and determining the determined 1 The dependence of the chromaticity of the mixed light on at least one of the wavelength of the primary light or the light output of the primary light, and at least of the measured wavelength of the primary light or the light output of the primary light. The chromaticity of the mixed light is set within a predetermined range based on A step of obtaining a required amount of the phosphor particles for covering, and a step of covering the light emitting element with the first translucent resin mixed with the required amount of the phosphor particles. A method for manufacturing a light emitting device is provided.

  Provided are a light emitting device capable of emitting a mixed color in which the weight of phosphor particles is controlled and chromaticity variation is reduced, and a method for manufacturing the same.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view of a light emitting device according to a first embodiment of the present invention.
The light emitting device shown in FIG. 1 is a side emission type, but the present invention is not limited to this and may be a top emission type. In order to describe the vicinity of the chip of the light emitting element 10, FIG. 1 shows that the first sealing layer 30 and the second sealing layer 40 are cut along the line AA, and the molded body 20 is cut along the line BB. It is the perspective view cut | disconnected along.

  When the first lead 12 is a cathode electrode, for example, the second lead 14 is an anode electrode. The first and second leads 12 and 14 are embedded in a molded body 20 made of a thermoplastic resin or the like, but the inner lead portions are opposed to each other inside the molded body 20, and the outer lead portions are in opposite directions. It protrudes from the molded body 20 toward. The molded body 20 has a recess 20a. The first lead 12 is exposed on the bottom surface of the recess 20a, and the light emitting element 10 is bonded using a silver paste or the like. The light emitting element 10 is connected to the first lead 12 by the bonding wire 11 and to the second lead 14 by the bonding wire 19.

  The light-emitting element 10 includes a first sealing layer 30 made of a first mixed resin in which a required weight of the first phosphor is mixed with a first translucent resin (refractive index n1 is approximately 1.5). Covered. A part of the primary light emitted from the light emitting element 10 is absorbed by the phosphor mixed with the first translucent resin and converted into wavelength converted light having a different wavelength. The first sealing layer 30 is covered with a second sealing layer 40 made of a second translucent resin (refractive index n2 is approximately 1.4) not mixed with phosphor particles. When the first translucent resin and the second translucent resin are, for example, silicone resins, discoloration of the resin due to primary light emitted from the light emitting element 10 can be suppressed.

  Further, when the light emitting element 10 is a nitride semiconductor, white light is mixed light of blue light as primary light emitted from the light emitting element 10 and wavelength converted light by a yellow phosphor made of a silicate material. And can be used as a backlight light source of a display device.

FIG. 2 is a flowchart illustrating the method for manufacturing the light emitting device according to the first embodiment.
The wavelength λd of the primary light emitted from the light emitting element 10 and the light output Po are distributed in the plane of the wafer. If the allowable distribution range of these characteristics is too narrow, the yield of non-defective chips decreases. On the other hand, if the allowable distribution range is too wide, the chromaticity variation of the light emitting device becomes large and the quality of the optical characteristics is lowered.

  First, as a preliminary process, the distribution of the wavelength λd and the light output Po in the wafer of the primary light is measured (S100), and appropriate distribution allowable ranges are, for example, 15 ≦ Po (mW) ≦ 17 and 450 ≦ λd ( nm) ≦ 460 or the like.

  Subsequently, the light emitting element 10 within the set allowable range of the wavelength λd and the light output Po is extracted, and a light emitting device using the light emitting element 10 is assembled. These light-emitting devices are prepared so as to include those having a predetermined chromaticity range in which the chromaticity of the mixed light to be emitted is, for example, 0.294 ≦ Cx ≦ 0.304. It is measured using an optical property measuring device 60 having the device. In this manner, the dependency of the chromaticity of the mixed light on the wavelength of the primary light (wavelength dependency) and the dependency on the light output of the primary light (light output dependency) are obtained (S101).

  FIG. 3 is a graph showing the chromaticity Cx of the mixed light. 3A shows the dependence of the chromaticity Cx of the mixed light emitted from the light emitting device on the light output of the primary light, and FIG. 3B shows the dependency of the primary light on the chromaticity Cx of the mixed light. Dependence on wavelength is expressed respectively. The vertical axis represents the chromaticity coordinates Cx of the chromaticity diagram, and the horizontal axis represents the light output Po (mW) or wavelength λd (nm) of the primary light emitted from the light emitting element.

FIG. 3 (a) shows the mixed resin with the phosphor blending ratio a _i (i = 1,..., N, N: integer) as parameters while keeping the wavelength λd of the primary light at the distribution upper limit value of 460 nm. The dependence of the chromaticity Cx of the mixed light on the light output of the primary light when the liquid is filled in the same volume is approximately expressed. The phosphor blending ratio a _i is the ratio of the phosphor weight to the mixed resin liquid weight, and is expressed by weight (wt)%. Phosphor compounding ratio _{a i} may be, for example, a range such as 5-50 wt%.

When the phosphor blending ratio a _i is constant, the chromaticity Cx of the mixed light increases as the light output Po of the primary light decreases. Further, when the phosphor blending ratio a _i is reduced, the intensity of yellow light, which is wavelength converted light, is reduced, the chromaticity Cx of the mixed light is reduced, and it approaches blue light of primary light. In general, the dependency of the chromaticity Cx of the mixed light on the light output of the primary light is not always expressed by a straight line. However, if the distribution allowable range of the light output Po of the primary light is a narrow range of plus or minus 10% or less of the central value, the chromaticity Cx of the mixed light can be linearly approximated, and the phosphor weight calculation method is It becomes simple. Moreover, the number of light emitting devices assembled in the preliminary process can be reduced by linear approximation. The light output dependency is also determined in which the wavelength λd is a constant wavelength value shorter than the allowable distribution range upper limit value of 460 nm.

On the other hand, FIG. 3B shows the mixing in the case where the same volume of the first mixed resin liquid is filled using the phosphor blending ratio a _i as a parameter while keeping the light output Po of the primary light at the distribution upper limit value of 17 mW. This schematically represents the wavelength dependence of the chromaticity Cx of light. When the phosphor blending ratio a _i is constant, the chromaticity Cx of the mixed light increases as the wavelength of the primary light decreases. Further, when the phosphor blending ratio a _i is decreased, the intensity of yellow light that is wavelength converted light is decreased, and the chromaticity Cx of the mixed color is decreased. In general, the dependence of the chromaticity Cx of the mixed light on the wavelength of the primary light is not always expressed by a straight line. However, if the allowable distribution range of the wavelength λd is a narrow range of plus or minus 1.5% or less of the center value, linear approximation is possible, and the phosphor weight calculation method becomes simple. In addition, the wavelength dependency in which the light output Po of the primary light is a constant value lower than the allowable distribution range upper limit value of 17 mW is also obtained.

  Further, if the wafer manufacturing process conditions of the light emitting element 10 are controlled with high accuracy, it is possible to suppress the wavelength dependency and the light output dependency shown in FIG. 3 from greatly fluctuating from wafer to wafer, and it is easy to derive these dependencies.

  When the predetermined range of the chromaticity Cx of the mixed light is 0.294 to 0.304, for example, the target value can be 0.3. When the primary light Po = 17 mW (light output upper limit value) and λ = 460 nm (wavelength upper limit value), it is possible to determine a phosphor blending ratio a1 such that Cx = 0.3 using FIG. S102). Thus, the preliminary process is completed.

  Next, an assembly process of the light emitting device is performed.

  FIG. 4 is a process cross-sectional view for sealing the resin, and represents a cross section taken along the line CC in FIG.

  The individual light emitting elements 10 are bonded to the package, and wire bonding is performed (S104). Subsequently, as shown in FIG. 4A, the wavelength λd and the optical output Po of each light emitting element 10 are measured using the optical characteristic measuring device 60 (S106).

  The dependency of the chromaticity Cx of the mixed light obtained in the preliminary process on the wavelength of the primary light (FIG. 3A) and the dependency on the light output (FIG. 3B), and the individual light emitting elements 10 The process of calculating the required weight b of the phosphor particles based on the primary light wavelength and the light output measurement value will be described below.

  FIG. 5 is a diagram for explaining a method of calculating the weight of the phosphor particles. That is, FIG. 5A shows the light output dependency of the phosphor mixture ratio for setting the chromaticity Cx of the wavelength-converted light to the target value 0.3 when the wavelength λd of the primary light is the upper limit value 460 nm. FIG. 5B is a graph illustrating the maximum volume of the mixed resin, and FIG. 5C is a schematic cross-sectional view illustrating a two-layer structure of the mixed resin and the translucent resin.

In FIG. 5A, the vertical axis represents the phosphor blending ratio (wt%), and the horizontal axis represents the light output Po (mW) of the primary light.
In the preliminary process, N curves representing the phosphor blending ratio a _i can be obtained as shown in FIG. When the dependence on the light output of the primary light is linearly approximated based on these curve groups, the result is as shown in FIG. At the point Q corresponding to Po = 17 mW and λd = 460 nm, the weight of the phosphor particles is maximized, so that the phosphor blending ratio is also the maximum value (a ₁ ).

In S106 of the measurement process, the chip optical output Po _x of the primary light emitted from the (light emitting element) and lower than 17mW optical output upper limit value. In order to simplify the description, the wavelength λd of the primary light is set to an upper limit value of 460 nm. Using the light output dependency of phosphor compounding ratio, it reads the phosphor compounding ratio a _x corresponding to the light output Po _x. In this case, the weight b of the phosphor particles can be calculated from the formula (1).

b = Vpm × r _x × a _x Formula (1)

However, Vpm: the maximum volume that can be filled with the mixed resin in the recess (cup) (excluding the chip volume)
r _x : Density of mixed resin with phosphor blending ratio a _x

The mounting process of the first embodiment, controls the volume of the mixed resin and a ₁ phosphor compounding ratio. The volume Vp of the mixed resin having the phosphor blending ratio a ₁ can be calculated by the equation (2).

Vp = b / (r ₁ × a ₁ )
_{= Vpm × (r x × a} x) / (r 1 × a 1) (2)

However, r ₁ : Density of mixed resin of phosphor blending ratio a ₁

Since the read phosphor blending ratio a _x is smaller than the phosphor blending ratio a ₁ (maximum value) and r _x is smaller than r ₁ , the volume Vp of the mixed resin is not more than the maximum volume Vpm (S108). . That is, the volume Vp of the mixed resin is controlled so that the chromaticity Cx of the mixed light is within a predetermined range for each light emitting device.

In addition, although FIG. 5 demonstrated the case where wavelength (lambda) d of primary light was constant with 460 nm which is the upper limit, this invention is not limited to this. When the light output of the primary light is constant at its upper limit value of 17 mW and the wavelength changes, the wavelength dependency of the phosphor blending ratio can be obtained based on FIG. Thereafter, the required weight b of the phosphor particles and the mixed resin volume can be calculated using the equation (2).
Further, in FIG. 3A, the wavelength λd of the primary light is set to 460 nm which is the upper limit value of the allowable distribution range, and in FIG. 3B, the light output Po of the primary light is set to 17 mW which is the upper limit value of the allowable distribution range. Yes. When the wavelength λd of the primary light is shorter than 460 nm and the light output Po is in a range lower than 17 mW, the chromaticity Cx of the mixed light becomes higher with the same phosphor blending ratio. The group of curves representing the wavelength dependence is shifted upward as a whole from FIG. These curve groups can be obtained in S101 of the preliminary process.
In this case, the phosphor blending ratio for achieving the same chromaticity can be obtained using a curve shifted downward from the curve shown in FIG.

Subsequently, as shown in FIG. 4 (b), it dropped into the recess 20a ejected from the nozzle 50a of only the ink-jet apparatus an amount corresponding mixed resin solution 30a was a phosphor compounding ratio _{a 1} to a volume Vp (S110). Or you may perform dripping using a dispenser.

  Further, as shown in FIG. 4C, the second translucent resin liquid 40a (refractive index n2, n2 ≦ n1) containing no phosphor particles is added to the volume Vt (= Vc−Vp) using another nozzle. ) Is dripped in an amount corresponding to). Providing the second sealing layer 40 made of the second translucent resin 40b makes it easy to suppress fluctuations in the directivity of emitted light due to changes in the volume Vp of the first sealing layer 30. Vc represents the volume of the recess 20a (cup) of the molded body 20.

Subsequently, for example, a resin curing process is performed by heat treatment at 150 ° C. for about 2 hours (S112), and a second sealing layer 30 and a second light-transmitting resin 40b are formed as shown in FIG. 4D. A light emitting device in which the sealing layer 40 is laminated in the recess 20a is completed. That is, as shown in FIG. 5C, a two-layer structure of the first sealing layer 30 in which the phosphor particles 30c are dispersed and the second sealing layer 40 in which the phosphor particles are not dispersed and arranged. can do.
Note that the phosphor weight b can be controlled by switching to a nozzle having a different phosphor blending ratio a _i or by using a plurality of nozzles. In this case, even if the wavelength λd and the light output Po of the light emitting element 10 fluctuate, the volume of the mixed resin liquid 30a can be easily set to the substantially maximum volume Vpm.

FIG. 6 is a graph showing the frequency distribution of the chromaticity Cx of the mixed light. 6A shows this embodiment, and FIG. 6B shows a comparative example. The vertical axis represents the frequency, and the horizontal axis represents the chromaticity Cx of the mixed light.
In this embodiment shown in FIG. 6A for a predetermined chromaticity range of 0.294 to 0.304, the chromaticity Cx of the mixed light is controlled between 0.296 and 0.303. On the other hand, in the comparative example in which the phosphor weight is not controlled, the chromaticity Cx of the mixed light is widely distributed between 0.281 to 0.312 and is difficult to keep within a predetermined range. That is, the chromaticity variation is large in the comparative example and the quality of the optical characteristics of the mixed light becomes insufficient, whereas in this embodiment, the chromaticity is easily controlled, and the light emission with improved quality of the optical characteristics. A device and a method for manufacturing a light emitting device with improved yield rate are provided.

  FIG. 2 shows a specific example in which the wavelength and light output of the primary light are measured, and the dependency of the chromaticity of the mixed light on the wavelength and light output of the primary light is measured. Is not limited to this.

  For example, when the variation in the wavelength of the primary light is relatively small, only the light output of the primary light is measured, and the dependence of the chromaticity of the mixed light on the light output of the primary light is measured to obtain fluorescence. The required amount of body particles may be determined. On the other hand, when the variation in the light output of the primary light is relatively small, only the wavelength of the primary light is measured, and the dependency of the chromaticity of the mixed light on the wavelength of the primary light is measured. The required amount of phosphor particles may be determined by measurement.

FIG. 7 is a chromaticity diagram illustrating the light emitting device according to the second embodiment.
The light emitting device according to the present embodiment includes primary light B that is blue light emitted from the light emitting element 10 and having a wavelength in the range of 450 to 460 nm, a nitride-based material, YAG (Yttrium-Aluminum-Garnet), and the like. It is possible to emit mixed light W in which wavelength-converted light G from a green phosphor and wavelength-converted light R from a red phosphor made of a nitride material or YAG are mixed.

  Also in this case, the wavelength λd of the blue primary light B distributed in the wafer and the optical output Po are measured (S100 in FIG. 2), and the allowable distribution range is set.

  The light emitting element 10 within the set allowable range of the wavelength λd and the light output Po is extracted, and a light emitting device using the light emitting element 10 is assembled. In this case, an appropriate mixing ratio of the green phosphor and the red phosphor is set so that the chromaticity of the mixed light W is within a predetermined range. While maintaining this mixing ratio, the chromaticity (Cx, Cy) of the mixed light W is measured by changing the respective phosphor compounding ratios with respect to the first mixed resin liquid 30a, and the wavelength dependence of the chromaticity of the mixed light and The light output dependency and the like are obtained (S101).

  Using these dependencies, the green phosphor blending ratio (maximum value) and red phosphor blending that can be set as the chromaticity target value at Po = 17 mW and λ = 460 nm of the primary light that is the upper limit of the allowable distribution range Each ratio (maximum value) is determined (S102). Thus, the preliminary process is completed.

  Next, an assembly process of the light emitting device is performed. The individual light emitting elements 10 are bonded to the package, and wire bonding is performed (S104). Subsequently, the wavelength λd of the primary light and the light output Po of each light emitting element 10 are measured using the optical characteristic measuring device 60 such as a spectroscopic device (S106).

Based on the dependence of the chromaticity of the mixed light on the wavelength of the primary light and the dependence on the light output obtained in the preliminary process, and the measured values of the wavelength λd of the primary light and the light output Po, the green fluorescence The required weights of the body particles and the red phosphor particles are calculated (S108).
The mixed resin liquid mixed with the required weight of phosphor particles is dropped from the nozzle (S110), the mixed resin liquid is cured (S112), and the assembly process is completed.

  FIG. 8 is a schematic cross-sectional view of the second embodiment. 8A shows a sealing layer 31 in which two phosphor particles are dispersedly arranged in a common light-transmitting resin 31b, and FIG. 8B shows two seals in which each phosphor particle is dispersedly arranged. Each of the structures having the stop layers 32 and 33 is shown.

  The mixing ratio of the first phosphor particles 31c and the second phosphor particles 31d can be set in advance. In FIG. 8A, a mixed resin liquid having a set mixing ratio of the phosphor particles 31c and 31d is prepared in the ink jet apparatus 50, a required volume is dropped so as to cover the light emitting element 10, and thermosetting or the like is performed. Thus, the third sealing layer 31 is obtained. The mixed resin liquid containing the phosphor particles 31c and the mixed resin liquid containing the phosphor particles 31d may be prepared separately and dropped from the respective nozzles. In addition, a second sealing layer 40 made of a translucent resin may be further provided on the third sealing layer 31.

  In FIG. 8B, first, a mixed resin liquid in which phosphor particles 32 d having a required weight are mixed with the translucent resin 32 b is prepared and dropped onto the chip of the light emitting element 10. Further, a mixed resin liquid in which phosphor particles 33c having a required weight are mixed with the translucent resin 33b is dropped. Thereafter, the fourth and fifth sealing layers 32 and 33 are formed by thermosetting. In addition, after forming the 4th sealing layer 32 by thermosetting, the mixed resin liquid may be dripped from on it, and the 5th sealing layer 33 may be formed. Further, a second sealing layer 40 made of a translucent resin may be further provided on the fifth sealing layer 33. In this manner, in the chromaticity diagram shown in FIG. 7, it becomes easy to control the mixed color W to the target chromaticity range.

  In the first and second embodiments, a light emitting device capable of emitting mixed light controlled in a predetermined chromaticity range and a lighting device using the light emitting device can be realized. For example, when a backlight light source in which these light emitting devices are arranged as a side light emitting type is configured, a display device with uniform chromaticity and high image quality is facilitated.

  The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to these embodiments. Even if those skilled in the art have made various design changes with respect to materials, sizes, shapes, arrangements, etc., such as translucent resin, phosphor particles, molded bodies, leads, and light emitting elements constituting the light emitting device. It is included in the scope of the present invention without departing from the gist of the present invention.

1 is a schematic perspective view of a light emitting device according to a first embodiment. The flowchart of the manufacturing method of the light-emitting device concerning a 1st embodiment. Graph showing chromaticity Cx Process cross-sectional view for sealing resin The figure explaining the calculation method of phosphor weight Graph showing the frequency distribution of chromaticity Cx of mixed light Chromaticity diagram illustrating a light emitting device according to a second embodiment Schematic sectional view of a light emitting device in which two phosphor particles are dispersedly arranged

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Light emitting element, 20 Molded body, 20a Concave part, 30 1st sealing layer, 30a 1st mixed resin liquid, 30b 1st translucent resin, 30c, 31c (1st) fluorescent substance particle, 31d 1st 2 phosphor particles, 40 second sealing layer, 40b second translucent resin 50 inkjet device, 50a nozzle, _ai phosphor blending ratio, b phosphor required weight

Claims (5)

A light-emitting element capable of emitting primary light; and a first translucent resin mixed with phosphor particles capable of absorbing the primary light and emitting wavelength-converted light. And a method of manufacturing a light emitting device that emits mixed light including the wavelength-converted light,
Obtaining in advance the dependence of the chromaticity of the mixed light on at least one of the wavelength of the primary light or the light output of the primary light;
Measuring at least one of the wavelength of the primary light or the light output of the primary light for each light emitting element;
Dependence of the chromaticity of the mixed light on at least one of the obtained wavelength of the primary light or the light output of the primary light, and the measured wavelength of the primary light or the light of the primary light Obtaining a required amount of the phosphor particles for setting the chromaticity of the mixed light within a predetermined range based on at least one of the outputs; and
Covering the light emitting element with the first translucent resin mixed with the required amount of the phosphor particles;
A method for manufacturing a light emitting device, comprising: The first translucent resin covers the light emitting element in a recess,
The fluorescence for setting the chromaticity of the mixed light, which is obtained when at least one of the wavelength of the primary light or the light output of the primary light is a predetermined allowable upper limit value, within the predetermined range Based on a required amount of body particles and a predetermined volume for filling the recess, the first mixture having a predetermined mixing ratio in which the predetermined amount of the phosphor particles is included in the predetermined volume. A step of preparing a translucent resin in advance;
Further comprising
The step of covering the light emitting element includes filling the recess with a necessary amount of the first translucent resin having the predetermined blending ratio according to the required amount of the phosphor particles obtained for each light emitting element. The method of manufacturing a light emitting device according to claim 1, wherein the manufacturing method is a step of covering.   In the step of covering the light emitting element, after the step of filling and covering the concave portion with the necessary amount of the first translucent resin, the phosphor particles are not included and the refractive index is equal to or lower than the refractive index of the first translucent resin. Filling the second translucent resin having a refractive index by an amount corresponding to the difference between the maximum volume that can be filled in the recess and the volume of the filled first translucent resin; A method for manufacturing a light emitting device according to claim 2, comprising: The phosphor particles are capable of absorbing the primary light and emitting a first wavelength converted light, and absorbing the primary light and a wavelength of the first wavelength converted light. Comprises second phosphor particles capable of emitting second wavelength-converted light having different wavelengths,
The method for manufacturing a light-emitting device according to claim 1, wherein the wavelength-converted light includes the first wavelength-converted light and the second wavelength-converted light.   The method for manufacturing a light emitting device according to claim 1, wherein the step of covering the light emitting element includes a step of discharging the first light-transmitting resin from a nozzle of an ink jet device. .

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