WO2018079373A1 - Élément de conversion de longueur d'onde de lumière et dispositif électroluminescent - Google Patents

Élément de conversion de longueur d'onde de lumière et dispositif électroluminescent Download PDF

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Publication number
WO2018079373A1
WO2018079373A1 PCT/JP2017/037679 JP2017037679W WO2018079373A1 WO 2018079373 A1 WO2018079373 A1 WO 2018079373A1 JP 2017037679 W JP2017037679 W JP 2017037679W WO 2018079373 A1 WO2018079373 A1 WO 2018079373A1
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Prior art keywords
wavelength conversion
conversion member
light
crystal
light wavelength
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PCT/JP2017/037679
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English (en)
Japanese (ja)
Inventor
淳 茂木
翔平 ▼高▲久
祐介 勝
光岡　健
経之 伊藤
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日本特殊陶業株式会社
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Priority claimed from JP2017198555A external-priority patent/JP6449963B2/ja
Application filed by 日本特殊陶業株式会社 filed Critical 日本特殊陶業株式会社
Priority to US16/328,161 priority Critical patent/US10665761B2/en
Priority to EP17865718.5A priority patent/EP3534192B1/fr
Priority to CN201780057362.6A priority patent/CN109716178B/zh
Priority to KR1020197005037A priority patent/KR102196577B1/ko
Publication of WO2018079373A1 publication Critical patent/WO2018079373A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/50—Wavelength conversion elements

Definitions

  • the present invention relates to an optical wavelength conversion member capable of converting the wavelength of light and a light emitting device including the optical wavelength conversion member.
  • LEDs Light Emitting Diodes
  • LDs Laser Diodes
  • Resin-based, glass-based, and ceramic-based materials are known as the material of this phosphor, but in recent years, the phosphor tends to increase in temperature due to higher output of the light source, and the ceramic-based phosphor with high durability. Development is underway. *
  • a garnet-type ceramic represented by the chemical formula A 3 B 5 O 12 is often used as the ceramic phosphor.
  • yttrium aluminum garnet YAG: Y 3 Al 5 O 12
  • Ce cerium
  • Patent Documents 1 to 3 YAG: Ce or Lu 3 Al 5 O 12 : Ce (LuAG: Ce) is dispersed and precipitated in alumina (Al 2 O 3 ) having excellent thermal conductivity. Thus, a ceramic composite with improved durability has been proposed.
  • Patent Documents 1 to 3 the balance between color unevenness and thermal conductivity is controlled by the volume ratio of Al 2 O 3 / A 3 B 5 O 12 : Ce.
  • the amount of YAG: Ce is set to 22 to 55 vol% of the whole. When the amount is less than 22 vol%, blue light is transmitted more, unevenness of color occurs, and when it exceeds 55 vol%, the thermal conductivity is increased. It is said that the durability will decrease.
  • the LuAG: Ce amount is 25 to 95 vol%. Furthermore, in Patent Document 3, the amount of A 3 B 5 O 12 : Ce is 20 to 25 vol%. Moreover, in Patent Document 3, in order to suppress the volatilization of Ce during firing, CeAl 11 O 18 is contained as 0.5 to 5 vol% as a Ce supply source.
  • the garnet-based fluorescent component is deposited in Al 2 O 3 without particularly controlling the crystal structure, in other words, high color homogeneity is achieved so as not to cause color unevenness in the volume ratio. Is to be obtained. For this reason, important characteristics as an original phosphor such as fluorescence intensity and translucency are impaired, and it cannot be said that sufficient fluorescence characteristics can be exhibited.
  • CeAl 11 O 18 in Patent Document 3 does not have both fluorescence and translucency, and therefore is a factor that further impairs the above-described fluorescence characteristics by being contained in the sintered body.
  • This invention is made
  • a first aspect of the present invention is a ceramic sintered body which is a polycrystalline body mainly composed of Al 2 O 3 crystal particles and crystal particles of a component represented by the chemical formula A 3 B 5 O 12 : Ce. It is related with the optical wavelength conversion member comprised from these.
  • a and B in A 3 B 5 O 12 are at least one element selected from the following element group.
  • the number of those existing in the Al 2 O 3 crystal particles is a, and other A 3
  • the number of B 5 O 12 : B existing in the Al 2 O 3 crystal grain boundary without being in contact with the Ce crystal grain is b, and one or more other
  • a 3 B 5 O 12 Ce crystal grains are in contact with the Al 2
  • the ratios are within the following ranges. Satisfies.
  • the light wavelength conversion member of the first aspect has the above-described configuration, high fluorescence intensity and high color homogeneity (that is, less color unevenness, as will be apparent from experimental examples described later). ) Can be realized. Details will be described below.
  • the Y is in the above range, the pinning effect is exerted against the Al 2 O 3, grain growth of Al 2 O 3 is suppressed. As a result, it is possible to obtain a sufficient translucency for extracting fluorescence.
  • the Z is in the above range, so that sufficient transparency can be taken out.
  • Z when Z is less than 48%, the fluorescence intensity is reduced due to insufficient translucency.
  • Z if Z is more than 90%, the translucency becomes too high, and the amount of transmitted excitation light increases, resulting in color unevenness. Moreover, it becomes difficult to form a connection path between the Al 2 O 3 crystal particles, and the thermal conductivity is lowered.
  • the light wavelength conversion member of the first aspect has high thermal conductivity due to the above-described configuration, even when the light source has a high output, it is possible to suppress the influence of heat, for example, light Disappearance can be prevented.
  • this light wavelength conversion member is a ceramic sintered body, its strength is high, and even when light is repeatedly irradiated from a light source, its performance is not easily deteriorated, and furthermore, weather resistance is also excellent. There is an advantage. *
  • the proportion of A 3 B 5 O 12 : Ce crystal particles in the ceramic sintered body is 5 to 50 vol%.
  • the ratio of A 3 B 5 O 12 : Ce crystal particles is 5 to 50 vol%, there is an advantage that sufficient fluorescence intensity can be obtained as will be apparent from the experimental examples described later. .
  • the ratio of Ce is less 10.0 mol% relative to A of A 3 B 5 O 12 (where not including 0).
  • the ratio of Ce is 10.0 mol% or less (excluding 0) with respect to A of A 3 B 5 O 12 , sufficient fluorescence is obtained as will be apparent from the experimental examples described later. There is an advantage that strength can be obtained.
  • the average crystal grain size of Al 2 O 3 crystal particles is 0.3 to 10 ⁇ m, and the average crystal grain size of A 3 B 5 O 12 : Ce crystal particles is 0.3 to 5 ⁇ m. It is.
  • the average crystal grain size of Al 2 O 3 crystal particles is 0.3 to 10 ⁇ m, and the average crystal grain size of A 3 B 5 O 12 : Ce crystal particles is 0.3 to 5 ⁇ m.
  • a fifth aspect of the present invention is a light emitting device including the light wavelength conversion member according to any one of the first to fourth aspects.
  • the light whose wavelength is converted by the light emitting device of the fifth aspect (specifically, the light wavelength conversion member) (that is, fluorescence) has high fluorescence intensity and high color homogeneity.
  • a light emitting element of the light emitting device a known element such as an LED or an LD can be used.
  • the “light wavelength conversion member” is a ceramic sintered body having the above-described configuration, and a grain boundary of each crystal particle includes a part of components constituting each crystal particle and inevitable impurities. Also good.
  • the “main component” indicates that the crystal particle is present in the largest amount (volume) in the light wavelength conversion member.
  • a 3 B 5 O 12 : Ce indicates that Ce is a solid solution substitution in a part of A in A 3 B 5 O 12.
  • the “cut surface of the light wavelength conversion member” is at least one cut surface in a portion where light is transmitted.
  • the average values satisfy X, Y, and Z can be employed.
  • the average value is employable.
  • the light wavelength conversion member 1 (see FIG. 2) of the embodiment is, for example, a plate-like ceramic sintered body, and has Al 2 O 3 crystal particles and a chemical formula A 3 B 5 O 12 : Ce. It is composed of a polycrystal having a main component of crystal particles (hereinafter also referred to as A 3 B 5 O 12 : Ce crystal particles) of the components represented.
  • a and B in A 3 B 5 O 12 are at least one element selected from the following element group.
  • the number of those existing in the Al 2 O 3 crystal particles is a, and other A 3
  • the number of B 5 O 12 : B existing in the Al 2 O 3 crystal grain boundary without being in contact with the Ce crystal grain is b, and one or more other
  • a 3 B 5 O 12 Ce crystal grains are in contact with the Al 2
  • the ratios are within the following ranges. Satisfies.
  • FIG. 1 the one corresponding to a (and hence X), that is, the A 3 B 5 O 12 : Ce crystal particle in the Al 2 O 3 crystal particle is indicated by Ka. Further, the crystal grains corresponding to b (and therefore Y), that is, A 3 B 5 O 12 : Ce particles present alone at the Al 2 O 3 grain boundary are indicated by Kb. Further, those corresponding to c (hence Z), i.e. Al 2 O 3 more than one A in 3 grain boundary B 5 O 12: contact with Ce crystal grains A 3 B 5 O 12: Ce, crystal grains, Kc Is shown.
  • the ratio of A 3 B 5 O 12 Ce crystal particles in the ceramic sintered body. Furthermore, in this embodiment, the ratio of Ce can be 10.0 mol% or less (excluding 0) with respect to A of A 3 B 5 O 12 .
  • the average crystal grain size of Al 2 O 3 crystal particles is 0.3 to 10 ⁇ m
  • the average crystal grain size of A 3 B 5 O 12 : Ce crystal particles is 0.3 to 5 ⁇ m. it can.
  • the light emitting device 3 includes a box-shaped ceramic package (container) 5 such as alumina, and a light emitting element 7 such as an LD disposed inside the container 5. And a plate-shaped optical wavelength conversion member 1 disposed so as to cover the opening 9 of the container 5.
  • the light emitted from the light emitting element 7 is transmitted through the light wavelength conversion member 1, and a part of the light is wavelength-converted inside the light wavelength conversion member 1 to emit light. That is, the light wavelength conversion member 1 emits fluorescence having a wavelength different from the wavelength of the light emitted from the light emitting element 7.
  • the light wavelength conversion member 1 of the present embodiment defines the ratios of X, Y, and Z, so that high fluorescence intensity and high color homogeneity can be realized. Moreover, since the light wavelength conversion member 1 of the present embodiment has high thermal conductivity, even when the output of the light source is increased, the influence of heat can be suppressed, for example, loss of light can be prevented. it can.
  • the light wavelength conversion member 1 of the present embodiment is a ceramic sintered body, the strength is high, and even when light is repeatedly irradiated from the light source, the performance is not easily deteriorated, and in addition, the weather resistance is improved. Also has the advantage of being superior.
  • the light emitting device 3 including the light wavelength conversion member 1 has an effect of generating fluorescence having high fluorescence intensity and high color uniformity.
  • Example 1 Under the conditions shown in Table 1 and Table 2 below, No. 1 to 9 ceramic sintered body samples were prepared. Of the samples, Nos. 1 to 9 are samples within the scope of the present invention.
  • the ratio of YAG (Y 3 Al 5 O 12 ) in the ceramic sintered body is 21 vol%.
  • Al 2 O 3 average particle size 0.3 ⁇ m
  • Y 2 O 3 average particle size 1.2 ⁇ m
  • CeO 2 average particle size
  • dispersant for example, a polycarboxylic acid-based dispersant, SN Dispersant 5468 manufactured by San Nopco, or Marialim AKM-0531 manufactured by Nippon Oil & Fats Co., Ltd. can be used.
  • SN Dispersant 5468 manufactured by San Nopco
  • Marialim AKM-0531 manufactured by Nippon Oil & Fats Co., Ltd.
  • (B) Average crystal grain size The sample (sample) was mirror-polished and then thermally etched at 1300 ° C. The etched surface was observed with a scanning electron microscope (that is, SEM observation), and an image of 5000 times an arbitrary portion in the ceramic sintered body was obtained.
  • SEM observation a scanning electron microscope
  • an arbitrary location when a sample is a rectangular plate shape, for example, the center position seen from the thickness direction which is a part which light permeate
  • Color unevenness (that is, color variation) was evaluated by measuring chromaticity variation with an illuminometer. For a sample processed to 20 mm square x 0.5 mm thickness, blue LD light having a wavelength of 465 nm is condensed by a lens to a width of 0.5 mm, and the color of light transmitted from the opposite surface is irradiated with this light. The chromaticity was measured with a luminometer.
  • Irradiation was carried out by setting an 18 mm square region at the center of the irradiation surface (sample surface) of the sample, and performing 3 mm intervals in the region, and evaluating the variation ( ⁇ X) in the chromaticity (X direction).
  • the variation ( ⁇ X) is the maximum value of deviation of chromaticity (X direction).
  • the chromaticity is an international display method established in 1931 by the International Commission on Illumination (CIE) and is a chromaticity represented by the CIE-XYZ color system. That is, the chromaticity is represented by an xy chromaticity diagram (so-called CIE chromaticity diagram) in which the three primary colors on the color are digitized and the colors are expressed in the xy coordinate space.
  • CIE International Commission on Illumination
  • Example 2 In any sample of Example 1, the relative density was 99% or more, and the sample was sufficiently densified.
  • the average crystal grain size of Al 2 O 3 (referred to as Al 2 O 3 grain size in Table 2) is in the range of 0.3 to 10 ⁇ m, and the average crystal of A 3 B 5 O 12 : Ce (YAG: Ce) It was found that the particle size (referred to as A 3 B 5 O 12 particle size in Table 2) was in the range of 0.3-5 ⁇ m.
  • Nos. 3 to 9 in which X, Y, and Z are within the scope of the present invention had good results in all of fluorescence intensity, color unevenness, and thermal conductivity.
  • No. 1 and 2 (with a lower firing temperature than the other samples) within the scope of the present invention showed more uneven color than the other Nos. 3 to 9. *
  • Example 2 As shown in Tables 1 and 2 below, ceramic sintered body samples (Nos. 10 to 15) were prepared by the same manufacturing method as in Example 1, and evaluated in the same manner.
  • the amount of the dispersant was changed in the range of 1.8 to 5 wt% and the firing time was changed in the range of 5 to 20 hours during the preparation.
  • Nos. 11 to 14 are samples within the scope of the present invention
  • Nos. 10 and 15 are samples outside the scope of the present invention (comparative example).
  • the average crystal grain size of Al 2 O 3 is in the range of 0.3 to 10 ⁇ m, and the average crystal grain size of A 3 B 5 O 12 : Ce (YAG: Ce) is 0.3
  • Nos. 11 to 14 in which X, Y, and Z are within the range of the present invention have a fluorescence intensity, color unevenness, and heat conduction. Both rates gave good results.
  • No. 10 with less Y had a slightly coarse Al 2 O 3 average crystal grain size of 11 ⁇ m, slightly reduced fluorescence intensity, and increased color unevenness.
  • No. 15 with a large amount of Y and a small amount of Z the fluorescence intensity was lower than 100.
  • Example 3 As shown in Tables 1 and 2 below, samples of ceramic sintered bodies (samples Nos. 16 to 20) were prepared by the same manufacturing method as in Example 1 and evaluated in the same manner.
  • Example 4 As shown in Table 1 and Table 2 below, a ceramic sintered body sample (No. 21 to 28 within the scope of the present invention) was prepared and evaluated in the same manner as in Example 1. went.
  • the raw material compounding ratio was changed so that the amount of A 3 B 5 O 12 : Ce (YAG: Ce amount) in the ceramic sintered body was 1 to 60 vol%.
  • all samples were sufficiently densified with a relative density of 99% or more.
  • the average crystal grain size of Al 2 O 3 is in the range of 0.3 to 10 ⁇ m
  • the average crystal grain size of A 3 B 5 O 12 : Ce (YAG: Ce) is in the range of 0.3 to 5 ⁇ m. I understood that.
  • Example 5 As shown in Table 1 and Table 2 below, a ceramic sintered body sample (No. 29 to 38 within the scope of the present invention) was prepared and evaluated in the same manner as in Example 1. went.
  • the raw material mixture ratio was changed so that the Ce concentration with respect to Y in A 3 B 5 O 12 (YAG) of the sintered body was 0 to 15 mol%.
  • all samples were sufficiently densified with a relative density of 99% or more.
  • the average crystal grain size of Al 2 O 3 is in the range of 0.3 to 10 ⁇ m
  • the average crystal grain size of A 3 B 5 O 12 : Ce (YAG: Ce) is in the range of 0.3 to 5 ⁇ m. I understood that.
  • Example 6 As shown in Table 1 and Table 2 below, a sintered ceramic sample (No. 39 to 59 within the scope of the present invention) was prepared and evaluated in the same manner as in Example 1. went.
  • one or more powders may be used to synthesize predetermined A 3 B 5 O 12 : Ce The blending ratio was changed.
  • the average crystal grain size of Al 2 O 3 is in the range of 0.3 to 10 ⁇ m, and the average crystal grain size of A 3 B 5 O 12 : Ce (YAG: Ce) is in the range of 0.3 to 5 ⁇ m. I understood that.
  • the atmospheric pressure firing method in the air was used as the firing method, but in addition, a vacuum atmosphere firing method, a reducing atmosphere firing method, a hot press (HP) method, hot isotropy, etc.
  • a sample having equivalent performance can also be produced by a pressure and pressure (HIP) method or a firing method combining these methods.
  • HIP pressure and pressure
  • Examples of uses of the light wavelength conversion member and the light emitting device include various uses such as phosphors, light wavelength conversion devices, headlamps, illumination, and optical devices such as projectors.
  • the function which one component in the said embodiment has may be shared by a some component, or the function which a some component has may be exhibited by one component.
  • at least a part of the configuration of the above embodiment may be added to or replaced with the configuration of another embodiment.
  • all the aspects included in the technical idea specified from the wording described in the claims are embodiments of the present invention.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
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  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Computer Hardware Design (AREA)
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Abstract

L'invention concerne un élément de conversion de longueur d'onde de lumière qui peut obtenir à la fois une intensité de fluorescence élevée et une homogénéité de couleur élevée, et un dispositif électroluminescent. Dans cet élément de conversion de longueur d'onde de lumière (1), A et B dans un A3B5O12 sont au moins un élément choisi parmi les groupes d'éléments suivants : A : Sc, Y, des lanthanides (à l'exception de Ce) B : Al, Ga à partir de N grains cristallins A3B5O12:Ce dans une section transversale carrée de 20 µm d'un corps fritté en céramique, définissant a en tant que nombre de ces derniers qui sont présents à l'intérieur d'un grain cristallin d'Al2O3, b en tant que nombre de ces derniers présents sur une limite de grain d'Al2O3 sans toucher un autre grain cristallin A3B5O12:Ce, et c étant le nombre présent sur une limite de grain de Al2O3 et touchant un ou plusieurs autres grains cristallins A3B5O12:Ce, et définissant X, Y et Z en tant que rapports desdits nombres au total, c'est-à-dire, a/N, b/N, c/N, respectivement, les rapports satisfont les plages suivantes. 0 % ≤ X ≤ 25 % 9 % ≤ Y ≤ 45 % 48 % ≤ Z ≤ 90 %
PCT/JP2017/037679 2016-10-28 2017-10-18 Élément de conversion de longueur d'onde de lumière et dispositif électroluminescent WO2018079373A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US16/328,161 US10665761B2 (en) 2016-10-28 2017-10-18 Light wavelength conversion member and light emission device
EP17865718.5A EP3534192B1 (fr) 2016-10-28 2017-10-18 Élément de conversion de longueur d'onde de lumière et dispositif électroluminescent
CN201780057362.6A CN109716178B (zh) 2016-10-28 2017-10-18 光波长转换部件及发光装置
KR1020197005037A KR102196577B1 (ko) 2016-10-28 2017-10-18 광파장 변환 부재 및 발광 장치

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JP2016211843 2016-10-28
JP2016-211843 2016-10-28
JP2017-198555 2017-10-12
JP2017198555A JP6449963B2 (ja) 2016-10-28 2017-10-12 光波長変換部材及び発光装置

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740017B2 (fr) 1978-04-28 1982-08-25
WO2006001316A1 (fr) * 2004-06-24 2006-01-05 Ube Industries, Ltd. Dispositif à diode électroluminescente blanche
WO2011102566A1 (fr) * 2010-02-16 2011-08-25 The Industry & Academic Cooperation In Chungnam National University (Iac) Synthèse rapide en phase solide de substances phosphorescentes de grenat d'yttrium et d'aluminium émettant de la lumière jaune
WO2011125422A1 (fr) * 2010-03-31 2011-10-13 宇部興産株式会社 Composites céramiques pour la conversion de la lumière, procédé pour la production de ceux-ci, et dispositifs émettant de la lumière constitués des mêmes
JP2012062459A (ja) * 2010-08-18 2012-03-29 Covalent Materials Corp セラミックス複合体
JP5153014B2 (ja) 2010-09-17 2013-02-27 コバレントマテリアル株式会社 緑色蛍光体
JP2013147643A (ja) * 2011-12-22 2013-08-01 Shin-Etsu Chemical Co Ltd イットリウムセリウムアルミニウムガーネット蛍光体の製造方法
WO2016117623A1 (fr) * 2015-01-21 2016-07-28 三菱化学株式会社 Luminophore fritté, dispositif électroluminescent, dispositif d'éclairage, phare de véhicule et procédé de fabrication de luminophore fritté
WO2017170609A1 (fr) * 2016-03-29 2017-10-05 三菱化学株式会社 Corps fluorescent, dispositif d'émission de lumière, appareil d'éclairage, et appareil d'affichage d'image

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5740017B2 (fr) 1978-04-28 1982-08-25
WO2006001316A1 (fr) * 2004-06-24 2006-01-05 Ube Industries, Ltd. Dispositif à diode électroluminescente blanche
WO2011102566A1 (fr) * 2010-02-16 2011-08-25 The Industry & Academic Cooperation In Chungnam National University (Iac) Synthèse rapide en phase solide de substances phosphorescentes de grenat d'yttrium et d'aluminium émettant de la lumière jaune
WO2011125422A1 (fr) * 2010-03-31 2011-10-13 宇部興産株式会社 Composites céramiques pour la conversion de la lumière, procédé pour la production de ceux-ci, et dispositifs émettant de la lumière constitués des mêmes
JP2012062459A (ja) * 2010-08-18 2012-03-29 Covalent Materials Corp セラミックス複合体
JP5088977B2 (ja) 2010-08-18 2012-12-05 コバレントマテリアル株式会社 セラミックス複合体
JP5153014B2 (ja) 2010-09-17 2013-02-27 コバレントマテリアル株式会社 緑色蛍光体
JP2013147643A (ja) * 2011-12-22 2013-08-01 Shin-Etsu Chemical Co Ltd イットリウムセリウムアルミニウムガーネット蛍光体の製造方法
WO2016117623A1 (fr) * 2015-01-21 2016-07-28 三菱化学株式会社 Luminophore fritté, dispositif électroluminescent, dispositif d'éclairage, phare de véhicule et procédé de fabrication de luminophore fritté
WO2017170609A1 (fr) * 2016-03-29 2017-10-05 三菱化学株式会社 Corps fluorescent, dispositif d'émission de lumière, appareil d'éclairage, et appareil d'affichage d'image

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3534192A4 *

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