WO2019180959A1 - Dispositif électroluminescent et appareil d'éclairage - Google Patents

Dispositif électroluminescent et appareil d'éclairage Download PDF

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Publication number
WO2019180959A1
WO2019180959A1 PCT/JP2018/011890 JP2018011890W WO2019180959A1 WO 2019180959 A1 WO2019180959 A1 WO 2019180959A1 JP 2018011890 W JP2018011890 W JP 2018011890W WO 2019180959 A1 WO2019180959 A1 WO 2019180959A1
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WO
WIPO (PCT)
Prior art keywords
blue
light
emitting device
green phosphor
green
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PCT/JP2018/011890
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English (en)
Japanese (ja)
Inventor
貴也 上野
仁 室伏
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サンケン電気株式会社
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Priority to PCT/JP2018/011890 priority Critical patent/WO2019180959A1/fr
Publication of WO2019180959A1 publication Critical patent/WO2019180959A1/fr

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    • 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 a light emitting device that emits white light by exciting a phosphor with a blue LED (blue light emitting diode) and a lighting apparatus using the light emitting device.
  • a blue LED blue light emitting diode
  • LED white illumination LED lighting fixtures
  • blue light problem there is a concern about the possibility of retinal damage due to blue light among the effects on the human body.
  • IEC International Electrotechnical Commission
  • GLS general lighting service
  • JIS C7550 is set based on these standards. If the effective radiance: Lb evaluation based on this is performed, the LED white illumination is positioned in the risk group 0 (risk exempt group), almost the same as other illumination light sources (such as fluorescent lamps and incandescent lamps). This group is defined by “effective radiance (value): L b ⁇ 10 2 (W ⁇ m ⁇ 2 ⁇ sr ⁇ 1 )”.
  • L b evaluated in our LED white lighting, in straight tube type and base light type lighting fixture, a light source luminance (value) L b became about 7-20.
  • L b evaluation because due brightness, large difference due to the shape (the concentration of intermediate light) luminaire, as a whole, a low color temperature, the direction of high color rendering properties of the luminaire, the luminance value L b is more Low value.
  • the device is roughly divided into three as shown below.
  • the first is a method of cutting the peak wavelength of blue light by about 20 to 30% using a filter, a light diffuser (scattering agent), a light reducing agent, or the like (see, for example, Patent Document 1). Therefore, it does not mean that the short-wave blue side component is reduced.
  • the second is a method of eliminating the projection of the spectrum in the blue region by using a relatively flat spectrum (spectral distribution) such as sunlight.
  • the second method results in a luminaire having an extremely high color rendering index.
  • LED white illumination is obtained by adopting a phosphor having a waveform that is relatively broad in blue light when excited by a near-ultraviolet or violet LED and approximated to a sunlight spectral distribution.
  • LED white illumination etc. which suppressed protrusion of the peak wavelength of blue light by using blue LED from which a plurality of wavelengths differ.
  • the effect here is about the same as the first effect, which cuts the peak wavelength portion of blue light by about 20 to 30%.
  • a third method uses a blue LED having a relatively long wavelength. Specifically, by employing a blue LED of 470nm or longer wavelength, it is possible to reduce to about one order of magnitude the luminance value L b. Although more essential than the first and second methods, the longer the blue LED is, the wider the spectrum width derived from the crystal structure, resulting in a gradual decrease in the short wave component, and The color rendering is significantly reduced.
  • the concern about retinal damage caused by blue light is that shorter-wave ultraviolet light, near ultraviolet light, and violet light are absorbed by the cornea and the lens before reaching the retina of the eye and are difficult to reach. It is derived from the fact that the first short wave among the light reaching the retina is blue light.
  • the absorption degree of near-ultraviolet light and violet light in the lens has individual differences and also varies depending on the age. In particular, as the age is younger, the transmittance is higher as it is younger, and in terms of spectral distribution, the proportion of purple light to shortwave blue light reaching the retina increases from childhood to boyhood. Therefore, when considering the safe environment for children, white light is desired that is not limited to safety evaluation standards, but has reduced near-ultraviolet to short-wave blue light as much as possible.
  • the present invention provides a light emitting device and a luminaire capable of dimming the blue light component in the short-wave side blue region of a blue LED and capable of emitting white light in which near-ultraviolet to short-wave blue light is reduced as much as possible. Objective.
  • a blue LED having a peak wavelength between 460 and 480 nm Arranged over the blue LED, A red phosphor that emits red light when excited by the emitted light of the blue LED; A green phosphor that emits green light when excited by the emitted light of the blue LED; A sealing resin to which a blue-green phosphor that is excited by the emitted light of the blue LED and emits blue-green light having an excitation spectrum peak in the near ultraviolet region is added, and The blue-green phosphor is provided with a light-emitting device having a characteristic of absorbing a light component in a short-wave side blue region of the blue LED.
  • the light emitting device according to any one of claims 1 to 5 is further provided, wherein a blending ratio of the blue-green phosphor to the total phosphor is 60% or more.
  • a luminaire for a photolithography chamber using an exposure wavelength smaller than the g-line is provided.
  • the blue light component of the blue wavelength side blue region of blue LED can be reduced, and the light-emitting device and lighting fixture which can light-emit white light which reduced near ultraviolet light-short wave blue light as much as possible can be provided. .
  • FIG. 1 is a cross-sectional view schematically showing a configuration example of a light emitting device according to an embodiment of the present invention.
  • FIG. 2 is a graph shown for explaining the characteristics of the light emitting device.
  • FIG. 3 is a table showing a comparison of the characteristics of each light emitting device, taking as an example a case where blue-green phosphors are added in the mixing ratios of conditions I to III.
  • FIG. 4 is a graph showing, in comparison with each spectrum of the light emitting device, an example in which a blue-green phosphor is added at a compounding ratio of Condition II.
  • FIG. 5 is a graph showing, in comparison with each spectrum of the light emitting device, an example in which a blue-green phosphor is added at a compounding ratio of Condition III.
  • FIG. 6 is a graph showing the relationship between the color rendering property Ra and the blue light component in the near ultraviolet to short wave side blue region of 450 nm or less.
  • FIG. 7 is a graph showing the relationship of the blending ratio of the blue-green phosphor to all phosphors including other phosphors with respect to the blue light component in the near ultraviolet to short-wave side blue region of 450 nm or less.
  • FIG. 8 (a) is a graph showing the characteristics of each light emitting device in comparison with an example in which a blue-green phosphor is added at a blending ratio of conditions I to III, and
  • FIG. 8 (b) is a graph showing FIG. it is a graph showing an enlarged region W M of (a).
  • FIG. 9 is a table showing characteristics of each color temperature in comparison with an example of a lighting fixture to which the light emitting device according to the embodiment of the present invention is applied.
  • FIG. 10 is a graph showing the spectral characteristics of each color temperature in a lighting fixture to which the light emitting device according to the embodiment of the present invention is applied.
  • FIG. 11 is a graph showing an example of spectral sensitivity distribution characteristics of an i-line resist.
  • the light emitting device 1 includes a blue LED 10 that emits blue light L B, and a sealing resin 30 disposed over the blue LED 10.
  • the sealing resin 30 has a green phosphor 23 which is excited to emit light of blue LED 10 (blue light L B) for emitting a green light L G (green-yellow phosphor) is excited to emit light of blue LED 10 containing a red phosphor 21 that emits red light L R.
  • the sealing resin 30 is added with a blue-green phosphor 25 that is excited by the light emitted from the blue LED 10 and emits blue-green light LBG .
  • Emitting device 1 shown in FIG. 1 for example, the recess bottom surface of the package 50 having a narrow recess 50R of the bottom 50 RB than the opening 50 RS, a structure in which blue LED10 are arranged.
  • the recess 50 ⁇ / b> R of the package 50 is filled with the sealing resin 30.
  • a silicone resin or the like can be used for the sealing resin 30.
  • Blue LED10 for example, having a peak wavelength ⁇ p around 460 ⁇ 480 nm, the entire wavelength band region emits blue light L B of about 400 ⁇ 500 nm.
  • the peak wavelength of the blue LED 10 is less than 460 nm, wavelength attenuation in a desired short wavelength region becomes difficult.
  • the peak wavelength of the blue LED 10 is preferably in the range of 460 to 480 nm.
  • red phosphor 21 As the red phosphor 21, a material similar to (Sr, Ca) AlSiN 3 : Eu, CaAlSiN 3 : Eu, or Cax (Si, Al) 12 (O, N) 16 : Eu can be adopted.
  • the green phosphor 23 is made of Lu 3 Al 512 : Ce, (Ba, Sr) Si 2 O 2 N 2 : Eu, (Si, Al) 6 (O, N) 8 : Eu, CaSc 2 O 4 : Ce, or , (Ba, Sr, Ca) 2 SiO 4 : Eu or the like can be employed.
  • a material similar to MgSi 4 O 16 C 12 : Eu or Lu 3 (Ga, Al) 5 O 12 : Ce can be employed.
  • the light-emitting device 1 uses the absorption characteristics (dimming action) of the blue-green phosphor 25 to reduce the blue light component in the short wavelength side blue region of the blue spectrum of the blue LED 10. It is configured to be dimmed. That is, blue-green phosphor 25 mainly rather than being utilized as an emitter, the absorption spectral distribution ( ⁇ excitation spectrum), utilized to consume the blue light L B of the short side blue region (absorption) Is done.
  • the red light L R and is a green light L G and the blue light L B and a blue-green light L BG is synthesized, for example, white light L W without the following blue light component 450nm Is emitted. Therefore, according to the light emitting device 1 according to this embodiment, as output light, white light L W with reduced as much as possible near-ultraviolet rays to short-wave blue light which is not good for eyes can be emitted.
  • FIG. 2 is a graph shown for explaining the characteristics of the light emitting device 1. Here shows in comparison of the emission spectra L S of the blue spectrum L BS and blue-green phosphor 25 of the excitation spectrum E S and blue LED10 blue green phosphor 25, the normalized data.
  • the blue light component of the short-wave blue region of the blue LED 10 in particular, the blue spectrum L BS in the following areas 450nm is excitation spectrum of the blue-green phosphor 25 having a peak in the near ultraviolet region E It is consumed by S ( ⁇ absorption characteristic).
  • S ⁇ absorption characteristic
  • FIG. 3 shows a comparison of simulation results for the characteristics of the light-emitting device 1.
  • the color temperature is fixed at 5000 K and the blue-green phosphor 25 is added at a blending ratio of Condition I, Condition II, and Condition III.
  • the blending ratio of the blue-green phosphor 25 is an arbitrary value whose numerical value varies depending on the type and quantity of the other phosphors 21 and 23.
  • Condition II is an example in which the blending ratio of the blue-green phosphor 25 to the other phosphors 21 and 23 is “0.4”.
  • Condition III is an example in which the blending ratio of the blue-green phosphor 25 is set to “0.6”.
  • Condition I is an example in which the blending ratio of the blue-green phosphor 25 is set to “0 (no addition)” so that a color rendering property (average color rendering index) Ra of 90 or more can be secured.
  • the color rendering property Ra is 80 or more (about 83.1), and it is not inferior as a general daylight color lighting fixture.
  • the blue light component in the near ultraviolet to short-wave side blue region of 450 nm or less can be reduced to 0% (see FIG. 3).
  • FIG. 6 shows the relationship between the color rendering property Ra and the blue light component in the near ultraviolet to short wave side blue region of 450 nm or less.
  • the blue light component in the near ultraviolet to short-wave side blue region of 450 nm or less needs to be 5% or less.
  • about one to L b is 1/100 the value of the maximum limit value of the JIS (Japanese Industrial Standards) Risk Group 0 (Risk exempt groups) of L b evaluation based on standards.
  • JIS Japanese Industrial Standards
  • Risk Group 0 Risk exempt groups
  • FIG. 7 shows the relationship of the blending ratio of the blue-green phosphor to all phosphors including other phosphors with respect to the blue light component in the near ultraviolet to short-wave side blue region of 450 nm or less.
  • the blending ratio of the blue-green phosphor is 0.35 (35%) to It is preferable to set it as 0.45 (45%).
  • FIG. 8A shows the characteristics of each light emitting device 1 in comparison with the case where the blue-green phosphor 25 is added at the mixing ratio of Condition I, Condition II, and Condition III. ) is an enlarged view of a region W M in FIG. 8 (a). However, the case where the peak wavelength ⁇ p of the blue LED 10 is 467 nm is illustrated.
  • the light emitting device 1 is configured such that the blue-green phosphor 25 is changed by the long wave shift by setting the blending ratio of the blue-green phosphor 25 to Condition II.
  • the color rendering property Ra is reduced to about 80 as compared with the condition I where no addition is made, the blue light component in the near ultraviolet to short wave side blue region of 450 nm or less is suppressed to 4.2% of the entire blue region (400 nm to 500 nm). I was able to.
  • the color rendering property Ra is reduced to about 60, but the blue light component in the near ultraviolet to short wave side blue region of 450 nm or less can be reduced to 0%.
  • the light-emitting device 1 uses the absorption characteristics of the blue-green phosphor 25 to reduce the blue light components in the near-ultraviolet, violet, and short-wave side blue regions as much as possible, and in the white light LW . it is obtained by so as to reduce the following blue light L B 450 nm. That is, in the LED white illumination, the blue-green phosphor 25 is provided as a light reducing agent for the light component in the short-wave side blue region of 450 nm or less.
  • the light emitting device according to the embodiment of the present invention is applied to, for example, a lighting apparatus (LED lighting apparatus) in a photolithography room in a semiconductor manufacturing factory will be described as an example.
  • a lighting apparatus LED lighting apparatus
  • a luminaire in a photolithography room in a semiconductor manufacturing factory uses a yellow lamp in which output light of 500 nm or less is cut so that a resist agent to be used is not exposed.
  • a resist agent to be used is not exposed.
  • the g-line resist whose spectral sensitivity distribution extends to around 480 nm can be handled only by the above-mentioned yellow lamp, but in the case of an i-line h-line resist, the long wavelength side spectral sensitivity distribution is as shown in FIG. Therefore, it is possible to realize a white lamp using a blue light component on a relatively long wavelength side.
  • a lighting apparatus (not shown) in the photolithography room is configured by using the light emitting device 1 according to this embodiment shown in FIG.
  • the i-line and h-line resist agent is exposed by using the light-emitting device 1 to which the blue-green phosphor 25 is added in the mixing ratio of the condition III shown in FIG. I will not let you. That is, white illumination for a photolithography room using an exposure wavelength smaller than the g-line can be realized.
  • FIG. 9 and FIG. 10 show the characteristics when the color temperature of the light emitting device 1 is varied in the lighting fixture to which the light emitting device 1 according to the present embodiment is applied.
  • the blue-green phosphor 25 is added at the same mixing ratio as in the condition III shown in FIG. 3 regardless of the color temperature is illustrated.
  • the blending ratio of the blue-green phosphor 25 is an arbitrary value whose numerical value varies depending on the type and quantity of the other phosphors 21 and 23.
  • the characteristics when the color temperature is 5000K are the same as those in the condition III of the light emitting device 1 shown in FIG. Specifically, by setting the blending ratio of the blue-green phosphor 25 to “0.6”, as shown in FIGS. 9 and 10, the blue color in the near ultraviolet to short wave side blue region of 450 nm or less from the lighting fixture is obtained.
  • the light component can be 0%. In this case, the color rendering property Ra was 59.4.
  • the color temperature is 4000 K, as shown in FIGS. 9 and 10, by setting the blending ratio of the blue-green phosphor 25 to “0.600”, the near-ultraviolet light of 450 nm or less from the luminaire is obtained.
  • the blue light component in the blue region on the short wave side can be set to 0%.
  • the color rendering property Ra was 59.9.
  • the blending ratio of the blue-green phosphor 25 is set to “0.600”, so that the near-ultraviolet light of 450 nm or less from the luminaire is obtained.
  • the blue light component in the blue region on the short wave side can be set to 0%. In this case, the color rendering property Ra was 63.4.
  • the light-emitting device 1 when the light-emitting device 1 according to this embodiment is applied as a lighting apparatus for a photolithography room, the blending ratio of the blue-green phosphor 25 regardless of the color temperature (5000K, 4000K, 3000K).
  • the blue light component of 450 nm or less from the luminaire can be made completely zero.
  • sensitive at g-line is less than the exposure wavelength, as long as, for example, i-ray h-ray resist material, avoid being sensitive It becomes possible.
  • FIG. 11 exemplifies spectral sensitivity characteristics of i-line resist.
  • g-line, h-line, i-line and resist agent of a monochromatic mercury exposure light source (high-pressure mercury lamp) (not shown) Shows the relationship.
  • g-line (436 nm), h-line (405 nm), i-line (365 nm), or broad (g, h, i-line) from a high-pressure mercury lamp. ) Is used.
  • g-line since a resist agent having sensitivity in a longer wavelength band than that of the resist agent shown in FIG. 11 is used, safe illumination light having no blue light component of 480 nm or less is necessary, and rather yellow Can only be handled with lights.
  • the light emitting device 1 in the case of applying to the lighting fixtures of the white light L W for photolithography chamber using the g-line is less than the exposure wavelength, ensuring that the resist material is sensitive Can be prevented. In addition, it is possible to obtain white illumination that is easy on the eyes and has excellent visibility and can sufficiently withstand long stays.
  • a light source device that can prevent exposure of an ultraviolet-sensitive irradiated object
  • a light source device that can freely select a wavelength according to the purpose (Reference 1: JP-A-2017-022137) has already been proposed.
  • this light source device although there is an advantage that the selectivity is high and energy loss is small, the configuration is complicated and the cost is high compared to the lighting fixture to which the light emitting device 1 according to the present embodiment is applied. is there. There are also concerns such as variations in the wavelength of each LED and uncertainty of the wavelength on the short wave region side.
  • the light emitting device 1 in the case of applying as a lighting fixture of the white light L W for photolithography chamber using a resist for i-line, by blue-green phosphor 25, an ultraviolet light, Purple light and blue light on the short wave side can be reliably cut.
  • the white light L W without the following blue light components 450 nm, it is possible illumination photolithography chamber. Therefore, as a lighting apparatus for a photolithography room, it is possible to provide highly reliable LED white illumination that has excellent visibility, can sufficiently withstand a long stay, has little burden on the eyes, and is extremely reliable. it can.
  • the blue light component of 450 nm or less is set to zero is exemplified, but the present invention is not limited to this, and if the color temperature is lowered or a longer wavelength blue LED is used, 460 nm or less.
  • the blue light component of is also reduced. Therefore, for example, a light-emitting device capable of setting a blue light component of 460 nm or less to zero can be applied to a luminaire in a photolithography room using a g-line resist.
  • the light-emitting device of the present invention and a lighting fixture using the light-emitting device can be used for various uses of a light-emitting device and a lighting fixture that excite a phosphor with a blue LED to output white light.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Led Device Packages (AREA)

Abstract

La présente invention concerne : un dispositif électroluminescent, pourvu d'une DEL bleue (10) ayant une longueur d'onde de pic proche de la plage de 460 à 480 nm, un luminophore rouge (21) qui est disposé de façon à recouvrir la DEL bleue (10 et qui est excité par la lumière émise LB de la DEL bleue (10) pour émettre une lumière rouge LR, un luminophore vert qui est excité par la lumière émise LB de la DEL bleue (10) pour émettre une lumière verte LG, et une résine d'étanchéité (30) à laquelle un luminophore bleu-vert (25) qui est excité par la lumière émise LB d'une DEL bleue (10) pour émettre une lumière bleue-verte LBG est ajouté, le dispositif électroluminescent étant conçu de telle sorte que, par l'utilisation des caractéristiques d'absorption du luminophore bleu-vert (25), un composant de lumière bleue dans une région bleue côté ondes courtes de la DEL bleue (10) est atténué et un composant s'étendant à partir de l'ultraviolet le plus proche vers le côté longueur d'onde courte bleu est supprimé ; et un appareil d'éclairage utilisant ledit dispositif électroluminescent.
PCT/JP2018/011890 2018-03-23 2018-03-23 Dispositif électroluminescent et appareil d'éclairage WO2019180959A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111403576A (zh) * 2020-03-19 2020-07-10 北京宇极芯光光电技术有限公司 一种长寿命高显色的白光led光源
WO2022029822A1 (fr) * 2020-08-03 2022-02-10 サンケン電気株式会社 Agent de gradation et dispositif électroluminescent contenant un agent de gradation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014209617A (ja) * 2013-03-29 2014-11-06 株式会社朝日ラバー Ｌｅｄ照明装置、その製造方法及びｌｅｄ照明方法
WO2014203839A1 (fr) * 2013-06-18 2014-12-24 シャープ株式会社 Source de lumière et dispositif émetteur de lumière
US20160003424A1 (en) * 2013-02-01 2016-01-07 Zhengming WU White LED Lamp Secondary Encapsulation Structure Capable of Reducing Blue-light Hazards
JP2017041621A (ja) * 2015-08-23 2017-02-23 久豊技研株式会社 Ｌｅｄ発光装置
US20170205635A1 (en) * 2016-01-14 2017-07-20 Po-Kang Lin Apparatus and methods for reducing blue light hazards
JP2017183522A (ja) * 2016-03-30 2017-10-05 サンケン電気株式会社 発光装置
WO2017200097A1 (fr) * 2016-05-20 2017-11-23 株式会社 東芝 Source de lumière blanche

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160003424A1 (en) * 2013-02-01 2016-01-07 Zhengming WU White LED Lamp Secondary Encapsulation Structure Capable of Reducing Blue-light Hazards
JP2014209617A (ja) * 2013-03-29 2014-11-06 株式会社朝日ラバー Ｌｅｄ照明装置、その製造方法及びｌｅｄ照明方法
WO2014203839A1 (fr) * 2013-06-18 2014-12-24 シャープ株式会社 Source de lumière et dispositif émetteur de lumière
JP2017041621A (ja) * 2015-08-23 2017-02-23 久豊技研株式会社 Ｌｅｄ発光装置
US20170205635A1 (en) * 2016-01-14 2017-07-20 Po-Kang Lin Apparatus and methods for reducing blue light hazards
JP2017183522A (ja) * 2016-03-30 2017-10-05 サンケン電気株式会社 発光装置
WO2017200097A1 (fr) * 2016-05-20 2017-11-23 株式会社 東芝 Source de lumière blanche

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111403576A (zh) * 2020-03-19 2020-07-10 北京宇极芯光光电技术有限公司 一种长寿命高显色的白光led光源
CN111403576B (zh) * 2020-03-19 2021-07-09 北京宇极芯光光电技术有限公司 一种长寿命高显色的白光led光源
WO2022029822A1 (fr) * 2020-08-03 2022-02-10 サンケン電気株式会社 Agent de gradation et dispositif électroluminescent contenant un agent de gradation
US11837685B2 (en) 2020-08-03 2023-12-05 Sanken Electric Co., Ltd. Dimming agent and light-emitting device containing dimming agent

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