中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

30 records (took 0.019 seconds)

    Phosphor compositions and methods of making the same
    15.
    发明授权
    Phosphor compositions and methods of making the same 有权
    荧光粉组合物及其制备方法

    公开(公告)号：US09567518B2

    公开(公告)日：2017-02-14

    申请号：US14496793

    申请日：2014-09-25

    Applicant: NITTO DENKO CORPORATION

    Inventor： Hiroaki Miyagawa ,  Bin Zhang ,  James Chienchung Shih

    IPC: C09K11/77 ,  H05B33/14 ,  F21V9/16 ,  G21K5/00 ,  H01L33/50

    CPC classification number: C09K11/7774 ,  C09K11/7721 ,  F21V9/30 ,  G21K5/00 ,  H01L33/502 ,  H05B33/14

    Abstract: Disclosed herein are emissive ceramic elements having low amounts of certain trace elements. Applicants have surprisingly found that a lower internal quantum efficiency (IQE) may be attributed to specific trace elements that, even at very low amounts (e.g., 50 ppm or less), can cause significant deleterious effects on IQE. In some embodiments, the emissive ceramic element includes a garnet host material and an amount of Ce dopant. The emissive ceramic element may, in some embodiments, have an amount of Na in the composition less than about 67 ppm, an amount of Mg in the composition less than about 23 ppm, or an amount of Fe in the composition less than about 21 ppm.

    Abstract translation: 本文公开了具有少量某些微量元素的发光陶瓷元件。 申请人惊奇地发现，较低的内部量子效率（IQE）可归因于特定的微量元素，甚至在非常低的量（例如，50ppm或更少）下也可能对IQE产生显着的有害影响。 在一些实施例中，发射陶瓷元件包括石榴石主体材料和一定量的Ce掺杂剂。 在一些实施方案中，发光陶瓷元件可以具有小于约67ppm的组成中的Na的量，组合物中的Mg的量小于约23ppm，或组合物中的Fe的量小于约21ppm 。

    Emissive Compacts and Method of Making the Same
    17.
    发明申请
    Emissive Compacts and Method of Making the Same 有权
    发射紧凑型及其制作方法

    公开(公告)号：US20150076406A1

    公开(公告)日：2015-03-19

    申请号：US14384271

    申请日：2013-03-12

    Applicant: Nitto Denko Corporation

    Inventor： Jiadong Zhou ,  Guang Pan ,  Hironaka Fujii ,  Bin Zhang

    IPC: C09K11/61 ,  H01L33/50

    CPC classification number: C09K11/616 ,  C04B2111/807 ,  C04B2235/65 ,  C04B2235/66 ,  C09K11/576 ,  H01L33/502

    Abstract: Some phosphor powders can be difficult to form into ceramic compacts because they are difficult to sinter. As described herein, phosphor powders that can degrade under conventional sintering temperatures can be sintered by heating the powder at a lower temperature, such as less than 800° C., while the powder is under greater than atmospheric pressure, such as at least 0.05 GPa. Phosphor ceramic compacts prepared by this method, and light-emitting devices incorporating these phosphor ceramic compacts, are also described.

    Abstract translation: 一些荧光体粉末难以形成陶瓷压块，因为它们难以烧结。 如本文所述，可以在常规烧结温度下降解的荧光体粉末通过在低于800℃的较低温度下加热粉末来烧结，同时粉末处于大于大气压下，例如至少0.05GPa 。 还描述了通过该方法制备的磷光体陶瓷压块和结合这些磷光体陶瓷压块的发光器件。

Patent Agency Ranking