• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    MATERIAL (Ba1-x-y-zSrxCayEuz) 2Si5-a-bAlaN8-a4bOa + 4b, USE OF CALCIUM IN A NITROCO SILICON MATERIAL, LIGHT EMISSION STRUCTURE AND SYSTEM. The invention relates to a new red-emitting material of (Ba1-xy-zSRxCayEUz) 2Si5-a-bALaN8-a-4bOa + 4b having a mean particle size distribution of 6 µm, with 0.3 x 0 , 9 0.01 y 0.1, 0.005 z 0.04, 0 to 0.2 and 0 b 0.2.
    公开号:BR112013013485B1
    申请号:R112013013485-2
    申请日:2011-11-28
    公开日:2020-12-29
    发明作者:Peter Josef Schmidt；Walter Mayr；Baby-Seriyati Schreinemacher；Joerg Meyer；Hanshelmut Bechtel
    申请人:Lumileds Holding B.V.；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention is directed to new luminescent materials for light emitting devices, especially in the field of new luminescent materials for LEDs. HISTORY OF THE INVENTION
    [002] Matches comprising silicates, phosphates (for example, apatite) and aluminates as host materials, with transition metals or rare earth metals added as activation materials for the host materials are widely known. As blue LEDs, in particular, have become practical in recent years, the development of white light sources using such blue LEDs in combination with such phosphor materials is being vigorously pursued.
    [003] Especially luminescent red-emitting materials were the focus of interest and several materials have been proposed, for example, US Patent 6680569 (B2), “Red Deficiency Compensating Phosphor for a Light Emitting Device”, or from the patent application WO 2005/052087 A1.
    [004] However, there is still a continuing need for luminescent orange-to-red materials that are useful within a wide range of applications and especially allow the manufacture of warm white phosphorus pcLEDs with optimized luminous efficiency and color reproduction. SUMMARY OF THE INVENTION
    [005] The present invention aims to provide a material that is useful within a wide range of applications and especially allows the manufacture of warm white phosphorus pcLEDs with optimized luminous efficiency and color reproduction.
    [006] This objective is solved by a material according to claim 1 of the present invention. Certainly, a material (Ba1-x-y-zSrxCayEuz) 2Si5-a-bAlaN8-a-4bOa + 4b having an average particle size distribution of> 6 μm is provided, characterized in that
    [007] 0.3 <x <0.9, 0.01 <y <0, 1, 0, 005 <z <0.04, 0 <a <0.2 and 0 <b <0.2.
    [008] It should be noted that by the term „(Ba1-x- y-zSrxCayEuz) 2Si5-a-bAlaN8-a-4bOa + 4b” - especially and / or in addition any material means and / or is included, which essentially has this composition. This goes by analogy for all the other materials mentioned in this invention.
    [009] The term "essentially" means especially that> 95%, preferably> 97% and more preferred> 99% by weight-%. However, in some applications, trace amounts of additives may also be present in the volume compositions. These additives particularly include such species known in the art as streams. Suitable fluxes include alkaline earth- or alkaline metal oxides, borates, phosphates and halides, such as fluorides, ammonium chloride, SiO2 and mixtures thereof.
    [010] Such material showed a wide range of applications within the present invention to have at least one of the advantages
    [011] below - Using the material as a luminescent material, LEDs can be embedded that show improved lighting characteristics, especially thermal stability.
    [012] - The photostability of the material is greatly improved, in contrast to materials having a smaller particle size
    [013] - The material has a higher emission than comparable materials.
    [014] A similar material is known, for example, from US 7,671,529. However, surprisingly, it has been found that by using the material composition, as described in this invention, a material with a larger average particle size and - depending on the actual application - furthermore, advantageous material characteristics can be obtained.
    [015] Without being bound by any theory, the inventors believe that it is especially the calcium content, as described, that leads to the larger particles (and that will be explained in more detail later).
    [016] Thus, this invention also relates to the use of calcium in nitric silicone materials to increase the average particle size.
    [017] According to a preferred embodiment of the present invention, 0.02 <y <0.04. It has been shown that a calcium content in this amount is already sufficient to result in the larger particle size, on the other hand larger amounts of Ca may possibly lead to the unwanted widening of the emission range and thus reduced light efficiency of the phosphorus material.
    [018] According to a preferred embodiment of the present invention, 0.35 <x <0.8, that is, the barium content is approximately 20% to 60% mol. This has been found to be advantageous for many applications due to the improved luminescence properties of the resulting material.
    [019] According to a preferred embodiment of the present invention, 0 <b <0.2, that is, the material comprises oxygen. Surprisingly, this has been observed to significantly increase the photostability of the material for many applications within the present invention. Without being bound by any theory, it is believed that small amounts of SiN4 tetrahedra containing Si linking the N atoms are removed from the M2Si5N8 lattice and the resulting charge is offset by the terminal O atoms. However, in most applications, it was found that the oxygen content should not be too high, that is, b should not exceed 0.2.
    [020] According to a preferred embodiment of the present invention, less than 10% of the phosphorus particles show an average diameter <2 μm. This was considered to be advantageous, as doing this for most photostability applications can be improved.
    [021] According to a preferred embodiment of the present invention, for> 90% of the phosphorus particles the ratio of the longest and shortest particle edge length is <5. This was considered advantageous since doing this for most applications to industrial applicability can be simplified.
    [022] As described above, the present invention relates to the use of calcium in nitric silicone materials to increase the average particle size. This is especially true for materials of the type M2Si5-a-bAlaN8-a-4bOa + 4b (with 0 <a <2 and 0 <b <2), which are in line with the preferred embodiments of the present invention.
    [023] It should be noted that the inventive use of calcium differs from the known use of flow materials, some of which are known to also improve particle size. According to the invention, calcium is essentially uniformly distributed in powder form where flux materials are generally not part of the luminescent material except for impurities.
    [024] According to a preferred embodiment of the present, the material has the structure M2Si5-a-bAlaN8-a-4bOa + 4b, with M being a divalent metal ion and with 0 <a <2 and 0 <b <2.
    [025] According to another preferred embodiment of the present, the material has the structure according to the present invention.
    [026] The present invention also relates to a light-emitting structure, especially an LED, comprising at least one material according to the present invention.
    [027] The present invention also relates to the system comprising a material according to the present invention and / or materials made according to the inventive methods shown above, being used in one or more applications below:
    [028] - Office lighting systems
    [029] - home lighting systems
    [030] - store lighting systems,
    [031] - residential lighting systems,
    [032] - preserved lighting systems,
    [033] - reflector systems,
    [034] - theater lighting systems,
    [035] - optical fiber application systems,
    [036] - projection systems,
    [037] - self-illuminated display systems,
    [038] - pixelated display systems,
    [039] - segmented display systems,
    [040] - warning signal systems,
    [041] - medical lighting application systems,
    [042] - indicator signal systems, and
    [043] - decorative lighting systems,
    [044] - portable systems,
    [045] - automotive applications,
    [046] - greenhouse lighting systems
    [047] The previously mentioned components, as well as the claimed components and the components to be used according to the invention in the described embodiments, are not subject to any special exceptions regarding their size, shape, material selection and technical concept of so that the selection criteria known in the relevant field can be applied without limitations. BRIEF DESCRIPTION OF THE DRAWINGS
    [048] Details, characteristics and additional advantages of the object of the invention are revealed in the subclaims, figures and the following description of the respective figures and examples, which - in an exemplary way - show various achievements and examples of an inventive material according with the invention.
    [049] Figure 1 shows an electron image of scanning a material according to example I of the present invention.
    [050] Figure 2 shows an electron image of scanning a material according to example II of the present invention.
    [051] Figure 3 shows an electron image of scanning a material according to a Comparative Example.
    [052] Figure 4 shows a diagram of emission power vs. layer thickness for two pcLEDs comprising an inventive and a comparative material, respectively; and
    [053] Figure 5 shows an emission diagram vs. wavelength for two pcLEDs comprising the inventive and comparative material of figure 4, respectively; and
    [054] Figure 6 shows a graph of the total emitted power as a function of CIE x color coordinate for the two pcLEDs in figure 5. EXPERIMENTAL SECTION
    [055] The following invention - with “the figures - will be better understood by the following examples that are for illustrative purposes only and that are not binding. GENERAL PREPARATION METHOD
    [056] All materials - whether inventive or comparative - were made according to the following prescription (and similar deviations from these):
    [057] Matches of compositions (Ba0,485-0,5xSr0,485- 0,5xCaxEu0,03) 2Si4,99O0,04N7.96 with different x = 0, 0,01 and 0,02 were prepared by mixing BaH2 ( made by hydrating the rods of Ba,> 99% pure), SrH2 (made by hydrating Sr granules,> 99% pure), CaH2 (Aldrich), Eu2Si5N8 (made by reacting Eu2O3 with carbon and silicon nitride at 1400 ° C), Si3N4 (UBE SN E-10) with a molar ratio of Ba + Sr + Ca + Eu / Si = 0.417 and firing twice with intermediate ball grinding at 1620 ° C in a molybdenum crucible under atmosphere H2 / N2, After ball milling, sieving and washing the powders with 2N HCl, water and isopropanol and the final drying, powder matches were obtained.
    [058] A significant effect of adding Ca on grain growth can be seen by changing the particle size distribution (average particle diameter for a given volume fraction, measured by laser scattering with a Beckman laser diffraction analyzer. Coulter LS series 200), as can be seen from Table I: TABLE I
    [059] Figures 1 to 3 show the digitalized electron images of the powders of the Inventive Example I, Inventive Example II and the Comparative Example (in calcium),
    respectively.
    [060] To further illustrate the advantageous feature of the inventive material, the photostability of Inventive Example III (see below) and the Comparative Example were investigated.
    [061] It has been observed that the reduction in emission intensity after 1h of irradiation with 10 W / cm2 of blue light and 260 ° C of phosphorus temperature is only 6% for an Inventive Example III while a Comparative Example II (in calcium) shows a reduction of 31%, as seen in Table II: TABLE II

    [062] More optical properties of pcLEDs that comprise the material according to Inventive Example III and Comparative Example II have been investigated. Figure 4 shows the total power emitted from the pcLEDs (red phosphor layers on a blue LED, the peak emission of 444nm) vs. the thickness of the layer, both for the material of Inventive Example III (diamonds) and Comparative Example II (triangles). For both series, the power decreases with the layer thickness, however, pcLEDs with the material according to the invention always have a higher output power.
    [063] Figure 5 shows two emission spectra with red phosphor layers on a blue LED (peak emission 444nm) of the layers from the material according to Inventive Example III (“A”, solid line), as well as Comparative Example II (“B” dashed line) having identical blue transmission. The pcLED using the material according to the invention delivers approximately 6% percent additional light.
    [064] Figure 6 shows a representation of the total power emitted as a function of CIE x color coordinate for the two pcLEDs in figure 5 (“A” and “B” have the same meaning as in figure 5). The color coordinated CIE serves as a measure of the red to blue light ratio in the LED emission spectrum. From the figure it can be clearly seen that the efficiency advantage of the inventive material increases with increasing light conversion.
    [065] The particular combinations of electronic elements and characteristics in the achievements detailed above are exemplary only, the exchange and replacement of these teachings with other teachings here and in the patents / orders incorporated by reference are also expressly observed. As those skilled in the art will recognize, variations, modifications and other implementations of what is described in this document can occur to those skilled in the art without departing from the spirit and scope of the invention as claimed. Certainly, the previous description is by way of example only and is not intended to limit. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "one" or "one" does not exclude plurality. The mere fact that certain measures are recited in the mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. A scope of the invention is defined in the following claims and the equivalent thereof. In addition, the reference signs used in the description and in the claims do not limit the scope of the invention as claimed. METHODS
    [066] The average diameter can be measured by the following procedure based on light scattering (see XU, R. Particle Characterization: Light Scattering Methods, Kluwer Academic Publishers, Dordrecht (2000)). The powder to be measured is suspended in a liquid medium such as demineralized water with a dispersant added to stabilize the suspension. The particle suspension is then analyzed by laser diffraction to obtain information on the distribution by measuring the dispersion intensity as a function of the dispersion angle and wavelength and the polarization of the light based on the applicable dispersion models. Such a method is absolute in nature without the need to calibrate the instrument.
    [067] Alternatively, particle sizes can be directly measured with a microscope (optical microscope, scanning electron microscope) and particle size distributions can be calculated based on image processing procedures.
    权利要求:
    Claims (6)
    [0001]
    1. MATERIAL (Bai-xy-zSrxCayEUz) 2SÍ5-a-bAlaN8-a-4bOa + 4b having an average particle size distribution of> 6 μm, characterized by: 0.3 <x <0.9, 0, 01 <y <0, 04, 0, 005 <z <0.04, 0 <a <0.2 and 0 <b <0.2.
    [0002]
    2. MATERIAL, according to claim 1, characterized by 0.02 <y <0.04.
    [0003]
    MATERIAL according to either of claims 1 or 2, characterized by 0.35 <x <0.8.
    [0004]
    4. MATERIAL according to any one of claims 1 to 3, characterized by 0 <b <0.2, where a = 0.
    [0005]
    5. LIGHT EMITTING STRUCTURE, especially an LED, characterized in that it comprises a material as defined in any one of claims 1 to 4.
    [0006]
    6. SYSTEM, characterized by comprising a material as defined in any of claims 1 to 4 and / or comprising a light-emitting structure as defined in claim 5, the system being used in one or more of the following applications: - Lighting systems office, - home lighting systems, - store lighting systems, - residential lighting systems, - preserved lighting systems, - reflector systems, - theater lighting systems, - fiber optic application systems, - systems projection, - self-illuminated display systems, - pixelated display systems, - segmented display systems, - warning signal systems, - medical lighting application systems, - indicator signal systems, - decorative lighting systems, - systems portable, - automotive applications, - greenhouse lighting systems.
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013013485B1|2020-12-29|material ba1-x-y-zsrxcayeuz) 2si5-a-balan8-a-4boa + 4b, light-emitting structure and system
    JP6305370B2|2018-04-04|Red light-emitting nitride-based calcium stabilized phosphor
    US8153025B2|2012-04-10|Red emitting luminescent materials
    JP4583076B2|2010-11-17|Light emitting element
    JP2017504668A|2017-02-09|Blue-green phosphor, light emitting device package including the same, and lighting device
    JP2008506011A|2008-02-28|Efficient green-emitting phosphor and combination with red-emitting phosphor
    TW200907026A|2009-02-16|Process for the preparation of phosphors consisting of orthosilicates for pcLEDs
    JP2018521936A|2018-08-09|Phosphor and phosphor-converted LED
    JP6718991B2|2020-07-08|Lutetium nitride fluorescent powder and light emitting device having the fluorescent powder
    JP6940794B2|2021-09-29|Nitride phosphor manufacturing method
    KR20160003195A|2016-01-08|Phosphors
    JP5578739B2|2014-08-27|Alkaline earth metal silicate phosphor and method for producing the same
    JP2021008524A|2021-01-28|Surface-treated phosphor and manufacturing method of the same, as well as light-emitting device
    TW201825645A|2018-07-16|Coated narrow band green phosphor
    JP6379332B2|2018-08-29|Phosphate phosphor and method for producing phosphate phosphor
    TWI673342B|2019-10-01|Phosphor and illumination device
    TWI751140B|2022-01-01|Phosphor, light-emitting element and light-emitting device
    JP2016050313A|2016-04-11|Inorganic red phosphor and light-emitting device comprising the same
    Moji2020|Novel synthesis and characterization of SiO2 nanopowders doped with Sr2+ and co-doped withTb3+ dispersed in PLA for application in light emitting material.
    WO2012077042A1|2012-06-14|Orange to red emitting silicion- oxyntirde luminescent materials
    JP2018150433A|2018-09-27|Orange phosphor and light-emitting device
    CN107022352A|2017-08-08|Fluorophor and its manufacture method
    JP2007095770A|2007-04-12|Resin composition and led using the same
    TW200920818A|2009-05-16|Green emitting luminescent materials
    同族专利:
    公开号 | 公开日
    EP2646523A1|2013-10-09|
    RU2013129842A|2015-01-10|
    JP5970467B2|2016-08-17|
    CN103314072A|2013-09-18|
    RU2591943C2|2016-07-20|
    KR101810234B1|2017-12-18|
    TWI537364B|2016-06-11|
    KR20130131392A|2013-12-03|
    BR112013013485A2|2016-10-11|
    WO2012073177A1|2012-06-07|
    US20130240943A1|2013-09-19|
    EP2646523B1|2015-11-25|
    CN107011904A|2017-08-04|
    JP2014504312A|2014-02-20|
    US9257607B2|2016-02-09|
    TW201229212A|2012-07-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    SU1039951A1|1981-12-18|1983-09-07|Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина|Luminiscent composition|
    US6680569B2|1999-02-18|2004-01-20|Lumileds Lighting U.S. Llc|Red-deficiency compensating phosphor light emitting device|
    EP1104799A1|1999-11-30|2001-06-06|Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH|Red emitting luminescent material|
    DE10147040A1|2001-09-25|2003-04-24|Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh|Lighting unit with at least one LED as a light source|
    JP4193471B2|2001-12-14|2008-12-10|日亜化学工業株式会社|Light emitting device and manufacturing method thereof|
    US6924514B2|2002-02-19|2005-08-02|Nichia Corporation|Light-emitting device and process for producing thereof|
    US6717353B1|2002-10-14|2004-04-06|Lumileds Lighting U.S., Llc|Phosphor converted light emitting device|
    JP4207537B2|2002-11-08|2009-01-14|日亜化学工業株式会社|Phosphor and light emitting device|
    US7723740B2|2003-09-18|2010-05-25|Nichia Corporation|Light emitting device|
    JP2005093912A|2003-09-19|2005-04-07|Nichia Chem Ind Ltd|Light-emitting device|
    JP3837588B2|2003-11-26|2006-10-25|独立行政法人物質・材料研究機構|Phosphors and light emitting devices using phosphors|
    TWI293327B|2004-03-22|2008-02-11|Fujikura Ltd|
    US8417215B2|2004-07-28|2013-04-09|Koninklijke Philips Electronics N.V.|Method for positioning of wireless medical devices with short-range radio frequency technology|
    JP4581120B2|2004-04-26|2010-11-17|独立行政法人物質・材料研究機構|Oxynitride powder and method for producing the same|
    KR100847957B1|2004-04-27|2008-07-22|마쯔시다덴기산교 가부시키가이샤|Phosphor composition and method for producing the same, and light-emitting device using the same|
    US6956247B1|2004-05-26|2005-10-18|Lumileds Lighting U.S., Llc|Semiconductor light emitting device including photonic band gap material and luminescent material|
    EP1780255B1|2004-07-13|2012-04-18|Fujikura, Ltd.|Fluorescent substance and light bulb color light emitting diode lamp using the fluorescent substance and emitting light bulb color light|
    US7540977B2|2004-09-22|2009-06-02|National Institute For Materials Science|Phosphor, production method thereof and light emitting instrument|
    JP4674348B2|2004-09-22|2011-04-20|独立行政法人物質・材料研究機構|Phosphor, method for producing the same, and light emitting device|
    RU2315078C2|2004-10-18|2008-01-20|Общество с ограниченной ответственностью Научно-производственная компания "Люминифор-Платан" |Photoluminophores for short-wave light-emitting diodes |
    US7671529B2|2004-12-10|2010-03-02|Philips Lumileds Lighting Company, Llc|Phosphor converted light emitting device|
    JP2006213910A|2005-01-06|2006-08-17|Matsushita Electric Ind Co Ltd|Oxynitride phosphor and light-emitting device|
    WO2006095285A1|2005-03-09|2006-09-14|Philips Intellectual Property & Standards Gmbh|Illumination system comprising a radiation source and a fluorescent material|
    KR20080009198A|2005-03-31|2008-01-25|도와 일렉트로닉스 가부시키가이샤|Phosphor phosphor sheet, and manufacturing method therefore, and light emission device using the phosphor|
    JP4761848B2|2005-06-22|2011-08-31|株式会社東芝|Semiconductor light emitting device|
    TWI266563B|2005-08-12|2006-11-11|Epistar Corp|Compound, phosphor composition and light-emitting device containing the same|
    US8035287B2|2006-04-25|2011-10-11|Koninklijke Philips Electronics N.V.|Fluorescent lighting creating white light|
    KR101204573B1|2006-05-10|2012-11-26|덴끼 가가꾸 고교 가부시키가이샤|Sialon phosphor, process for producing the same, and illuminator and luminescent element employing the same|
    EP2118235B1|2007-02-06|2011-04-06|Philips Intellectual Property & Standards GmbH|Red emitting oxynitride luminescent materials|
    CN101157854B|2007-07-02|2010-10-13|北京宇极科技发展有限公司|Oxynitrides luminescent material, preparation method and uses thereof|
    EP2175006B1|2007-07-09|2013-07-24|Sharp Kabushiki Kaisha|Group of phosphor particles, and light-emitting device using the same|
    JP2009096882A|2007-10-17|2009-05-07|Denki Kagaku Kogyo Kk|Phosphor and method for producing the same|
    JP2009221318A|2008-03-14|2009-10-01|Tokyo Institute Of Technology|Method for producing phosphor, phosphor-containing composition, light emitting device, image display device and illuminating device|
    WO2010002015A1|2008-07-02|2010-01-07|ソニー株式会社|Red phosphor, method for producing red phosphor, white light source, illuminating device, and liquid crystal display device|
    CN102300955A|2009-01-27|2011-12-28|电气化学工业株式会社|a-sialon phosphor, method for producing same, and light-emitting device|
    US20100289044A1|2009-05-12|2010-11-18|Koninklijke Philips Electronics N.V.|Wavelength conversion for producing white light from high power blue led|TWI494413B|2012-12-22|2015-08-01|Chi Mei Corp|Phosphor and light emitting device|
    TWI464238B|2013-03-27|2014-12-11|Chi Mei Corp|Phosphor and light emitting device|
    CN107109220B|2014-10-31|2020-04-10|亮锐控股有限公司|Phosphor converted LED with temperature stable flux and saturated red color point|
    CN104371712A|2014-11-03|2015-02-25|天津理工大学|Normal-pressure preparation method of calcium-base nitride red fluorescent powder|
    WO2016102295A1|2014-12-24|2016-06-30|Koninklijke Philips N.V.|Phosphor converted led|
    JP6700632B2|2016-03-28|2020-05-27|国立研究開発法人物質・材料研究機構|Phosphor, manufacturing method thereof, light emitting device, image display device, pigment and ultraviolet absorber|
    JP6700631B2|2016-03-28|2020-05-27|国立研究開発法人物質・材料研究機構|Phosphor, manufacturing method thereof, light emitting device, image display device, pigment and ultraviolet absorber|
    JP6735487B2|2016-03-28|2020-08-05|国立研究開発法人物質・材料研究機構|Phosphor, manufacturing method thereof, light emitting device, image display device, pigment and ultraviolet absorber|
    US10968387B2|2016-03-28|2021-04-06|National Institute For Materials Science|Phosphor, method for production same, light emitting device, image display, pigment and ultraviolet light absorber|
    JP6700633B2|2016-03-28|2020-05-27|国立研究開発法人物質・材料研究機構|Phosphor, manufacturing method thereof, light emitting device, image display device, pigment and ultraviolet absorber|
    JP6700630B2|2016-03-28|2020-05-27|国立研究開発法人物質・材料研究機構|Phosphor, manufacturing method thereof, light emitting device, image display device, pigment and ultraviolet absorber|
    US10711192B2|2016-08-12|2020-07-14|Osram Oled Gmbh|Lighting device|
    US10644206B2|2016-08-12|2020-05-05|Osram Oled Gmbh|Lighting device|
    JP2020500958A|2016-11-11|2020-01-16|オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツングＯｓｒａｍ Ｏｐｔｏ Ｓｅｍｉｃｏｎｄｕｃｔｏｒｓ ＧｍｂＨ|Use of phosphors, lighting devices and lighting devices|
    DE112017004059A5|2016-08-12|2019-05-02|Osram Opto Semiconductors Gmbh|ILLUMINATION DEVICE|
    US11230664B2|2016-11-11|2022-01-25|Osram Oled Gmbh|Dimmable light source|
    DE102016121692A1|2016-08-12|2018-02-15|Osram Gmbh|Phosphor and method of making a phosphor|
    US10837607B2|2017-09-26|2020-11-17|Lumileds Llc|Light emitting device with improved warm-white color point|
    RU2693781C2|2017-12-12|2019-07-04|Федеральное государственное бюджетное учреждение науки Ордена Трудового Красного Знамени Институт химии силикатов им. И.В. Гребенщикова Российской академии наук |Red-emitting photoluminescent phosphor material for plasma panels screens|
    WO2022044907A1|2020-08-27|2022-03-03|住友化学株式会社|Light-emitting composite particles and light-emitting composite particle composition|
    法律状态:
    2017-11-07| B25D| Requested change of name of applicant approved|Owner name: KONINKLIJKE PHILIPS N.V. (NL) |
    2017-11-21| B25G| Requested change of headquarter approved|Owner name: KONINKLIJKE PHILIPS N.V. (NL) |
    2018-03-06| B25A| Requested transfer of rights approved|Owner name: LUMILEDS HOLDING B.V. (NL) |
    2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-02| B06T| Formal requirements before examination|
    2020-09-08| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-09-29| B06I| Technical and formal requirements: publication cancelled|Free format text: ANULADA A PUBLICACAO CODIGO 6.1 NA RPI NO 2592 DE 08/09/2020 POR TER SIDO INDEVIDA. |
    2020-10-06| B09A| Decision: intention to grant|
    2020-12-29| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 28/11/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP10193251.5|2010-12-01|
    EP10193251|2010-12-01|
    PCT/IB2011/055329|WO2012073177A1|2010-12-01|2011-11-28|Red emitting luminescent materials|
    [返回顶部]