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WO2014088451A1 - Procédé de production de sources de lumière blanche à led tricolores modifiées - Google Patents

Procédé de production de sources de lumière blanche à led tricolores modifiées Download PDF

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Publication number
WO2014088451A1
WO2014088451A1 PCT/RU2012/001029 RU2012001029W WO2014088451A1 WO 2014088451 A1 WO2014088451 A1 WO 2014088451A1 RU 2012001029 W RU2012001029 W RU 2012001029W WO 2014088451 A1 WO2014088451 A1 WO 2014088451A1
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WO
WIPO (PCT)
Prior art keywords
white light
phosphors
phosphor
color
light sources
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/RU2012/001029
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English (en)
Russian (ru)
Inventor
Анатолий Васильевич ВИШНЯКОВ
Яаохуи ЧАНГ
Екатерина Анатольевна ВИШНЯКОВА
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PCT/RU2012/001029 priority Critical patent/WO2014088451A1/fr
Publication of WO2014088451A1 publication Critical patent/WO2014088451A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7706—Aluminates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
    • H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
    • H10H20/80—Constructional details
    • H10H20/85—Packages
    • H10H20/851—Wavelength conversion means
    • H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
    • H10H20/8512—Wavelength conversion materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps

Definitions

  • the invention relates to the field of lighting engineering and, in particular, to LED white light sources based on LEDs of blue (450–455 nm), green (525–535 nm) and red (605–615 nm), called after combining the RGB triad.
  • LED white light sources based on LEDs of blue (450–455 nm), green (525–535 nm) and red (605–615 nm), called after combining the RGB triad.
  • Light sources of this type are widely used in household and decorative lighting systems.
  • a significant drawback of industrial white light sources based on LEDs with narrow spectral (20-3 Onm) lines is the low level of color rendering quality. This parameter is determined by the values of the general (Ra) and partial color rendering indices (R). In industrial three-color white light sources, the overall color rendering index (Ra) usually does not exceed 70 units (with a physiologically acceptable norm of 80-95 for indoor units). This is due to the low values of particular color rendering indices characterizing the contribution to the total luminous flux of saturated red radiation (R9), saturated yellow (R10), saturated green (R11) and saturated blue (R12).
  • the color rendering quality in RGB white light sources depends on the position of the maxima and the intensity of the light emitted by each LED.
  • the light intensity depends on the current density passing through the LED.
  • An increase in current density is always accompanied by an increase in the temperature of the p- ⁇ junction, which in turn leads to a broadening of the emitted spectral line and a change in the position of the maximum on the spectral curve.
  • each of these values for different lines has its own temperature coefficient. Therefore, the search for color balance in sources of this type, achieved by correcting the radiation power of all radiation components for a given the color temperature of a white light source or a given emission spectrum is a rather complicated task, which is also a disadvantage of this type of device.
  • the third disadvantage is the low volume uniformity of color.
  • the color of the white light source should not depend on the direction of the radiation.
  • the distance between the LEDs in the triad can exceed 1 mm and under these conditions the source of each light becomes physically distinguishable, which leads to a decrease in the efficiency of the system as a whole.
  • the present invention seeks to address these disadvantages of traditional RGB white light sources.
  • the technical result of the invention is to improve the color rendering quality and increase the light conversion efficiency of tri-color LED white light sources.
  • This result is achieved by the method of obtaining modified tri-color LED white light sources, namely, that a suspension of a phosphor excited by blue light is applied to the RGB triad in a curable optically transparent photo-and heat-resistant polymer.
  • the observed effect of improving the color rendering quality and light conversion efficiency is due to the improvement in volumetric color uniformity achieved by scattering of each of the color components in the applied dispersion medium and a significant broadening of each of the color bands.
  • M ° 1-5 show how the lighting characteristics of a three-color LED white light source change when it is modified by applying a suspension of phosphors of various compositions to the RGB triad, belonging to the cerium-activated yttrium-aluminum garnet family (YAG: Ce). In the table.
  • N ° l shows the optical characteristics of these phosphors (color coordinates - x and y, the position of the maximum in the luminescence spectrum - ⁇ ⁇ ( ⁇ ), the dominant wavelength in the luminescence spectrum - X ⁇ (nm), color temperature - T s (K), the width of the spectrum at half the height is ⁇ ( ⁇ ), the luminescence brightness when excited by light with a wavelength of 460 nm (% in relation to the Nemoto "902" standard).
  • modifying the RGB source leads to a fundamental change in all optical characteristics, an increase in the total and the entire set of private indices, as well as an increase of more than 50% in the total luminous flux, the magnitude of which is proportional to the efficiency of the light source. It should also be noted a significant expansion of all base bands and an increase in the intensities of the bands of green and red light.
  • the color temperature of the modified source was close to the standard of normal white.
  • the increase in the total luminous flux is maintained at the level of example N ° l.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Led Device Packages (AREA)
  • Luminescent Compositions (AREA)

Abstract

L'invention concerne un procédé de production de sources de lumière blanche tricolores modifiées, qui permet d'améliorer la qualité de transmission de la lumière et d'augmenter l'efficacité de la source de lumière en appliquant sur le trio RVB une suspension de luminophore bleu d'excitation dans un polymère photo- et thermorésistant optiquement transparent et solidifié. On utilise en qualité de luminophores appliqués sur la surface de la source de lumière blanche tricolore des luminophores activés par du cérium et appartenant à la famille des grenats stœchiométriques Ln3Al5O12, où Ln représente yttrium ou un ou plusieurs éléments des terres rares compatibles avec celui-ci. Il est également possible d'utiliser avec ces derniers des compositions non stœchiométriques ayant un excédent d'oxyde du groupe des lanthanes ou de l'oxyde d'aluminium, ainsi que des luminophores de silicate activé par de l'europium et à base d'oxydes mélangés de métaux alcalino-terreux.
PCT/RU2012/001029 2012-12-06 2012-12-06 Procédé de production de sources de lumière blanche à led tricolores modifiées Ceased WO2014088451A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/RU2012/001029 WO2014088451A1 (fr) 2012-12-06 2012-12-06 Procédé de production de sources de lumière blanche à led tricolores modifiées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2012/001029 WO2014088451A1 (fr) 2012-12-06 2012-12-06 Procédé de production de sources de lumière blanche à led tricolores modifiées

Publications (1)

Publication Number Publication Date
WO2014088451A1 true WO2014088451A1 (fr) 2014-06-12

Family

ID=50883763

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2012/001029 Ceased WO2014088451A1 (fr) 2012-12-06 2012-12-06 Procédé de production de sources de lumière blanche à led tricolores modifiées

Country Status (1)

Country Link
WO (1) WO2014088451A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548851A2 (fr) * 2003-12-26 2005-06-29 Stanley Electric Co., Ltd. Diode électroluminescente avec conversion de longuer d'onde et son procédé de fabrication
EP1845133A1 (fr) * 2005-01-24 2007-10-17 Momentive Performance Materials Japan LLC Composition de silicone pour encapsuler un element luminescent et dispositif luminescent
RU2315078C2 (ru) * 2004-10-18 2008-01-20 Общество с ограниченной ответственностью Научно-производственная компания "Люминифор-Платан" (ООО НПК "Люминофор-Платан") Фотолюминофоры для коротковолновых светоизлучающих диодов (сид)
US7661862B2 (en) * 2006-12-07 2010-02-16 Skc Haas Display Films Co., Ltd. LCD display backlight using elongated illuminators
WO2011014091A1 (fr) * 2009-07-28 2011-02-03 Vishnyakov Anatoly Vasilyevich Matériau inorganique luminescent pour sources de lumière blanche à corps solide
RU2444813C2 (ru) * 2007-09-12 2012-03-10 Лумитех Продукцион Унд Энтвиклунг Гмбх Светодиодный модуль, светодиодный источник света и светодиодный светильник для энергоэффективного воспроизведения белого света
RU2456327C2 (ru) * 2010-10-22 2012-07-20 Анатолий Васильевич Вишняков Люминесцирующий материал для твердотельных источников белого света (варианты)

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1548851A2 (fr) * 2003-12-26 2005-06-29 Stanley Electric Co., Ltd. Diode électroluminescente avec conversion de longuer d'onde et son procédé de fabrication
RU2315078C2 (ru) * 2004-10-18 2008-01-20 Общество с ограниченной ответственностью Научно-производственная компания "Люминифор-Платан" (ООО НПК "Люминофор-Платан") Фотолюминофоры для коротковолновых светоизлучающих диодов (сид)
EP1845133A1 (fr) * 2005-01-24 2007-10-17 Momentive Performance Materials Japan LLC Composition de silicone pour encapsuler un element luminescent et dispositif luminescent
US7661862B2 (en) * 2006-12-07 2010-02-16 Skc Haas Display Films Co., Ltd. LCD display backlight using elongated illuminators
RU2444813C2 (ru) * 2007-09-12 2012-03-10 Лумитех Продукцион Унд Энтвиклунг Гмбх Светодиодный модуль, светодиодный источник света и светодиодный светильник для энергоэффективного воспроизведения белого света
WO2011014091A1 (fr) * 2009-07-28 2011-02-03 Vishnyakov Anatoly Vasilyevich Matériau inorganique luminescent pour sources de lumière blanche à corps solide
RU2456327C2 (ru) * 2010-10-22 2012-07-20 Анатолий Васильевич Вишняков Люминесцирующий материал для твердотельных источников белого света (варианты)

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