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    METHOD FOR PRODUCING FLUORIDE FLUORESCENT MATERIAL
    1.
    发明公开
    METHOD FOR PRODUCING FLUORIDE FLUORESCENT MATERIAL 审中-公开

    公开(公告)号：US20230142024A1

    公开(公告)日：2023-05-11

    申请号：US18149244

    申请日：2023-01-03

    Applicant: NICHIA CORPORATION

    Inventor： Tomokazu YOSHIDA

    IPC: C09K11/61 ,  C01B33/10

    CPC classification number: C09K11/617 ,  C01B33/103 ,  C01P2006/60

    Abstract: A method for producing a fluoride fluorescent material comprises: preparing fluoride particles having a composition containing at least one element or ion A selected from the group consisting of alkaline metal elements and NH4+, at least one element M selected from the group consisting of Group-4 elements and Group-14 elements, Mn4+, and F, in which a molar ratio of A in 1 mol of the composition is 2, a total molar ratio of M and Mn4+ is 1, a molar ratio of Mn4+ is in a range of more than 0 and less than 0.2, and a molar ratio of F is 6; subjecting the fluoride particles to a first heat treatment at a temperature of 500° C. or more in an inert gas atmosphere; washing the first heat-treated fluoride particles with a washing liquid; and bringing the washed fluoride particles into contact with a fluorine-containing substance and subjecting the resulting fluoride particles to a second heat treatment at a temperature of 400° C. or more.

    LIGHT-EMITTING DEVICE
    3.
    发明申请
    LIGHT-EMITTING DEVICE 审中-公开

    公开(公告)号：US20180203301A1

    公开(公告)日：2018-07-19

    申请号：US15866826

    申请日：2018-01-10

    Applicant: NICHIA CORPORATION

    Inventor： Shoji HOSOKAWA ,  Kazuya NISHIMATA ,  Tomokazu YOSHIDA

    IPC: G02F1/1335

    CPC classification number: G02F1/133602 ,  G02F1/133514 ,  H01L33/50

    Abstract: Provided is a light-emitting device including a light-emitting element having a peak emission wavelength in a range of from 400 nm to 470 nm, and a fluorescent member including a first fluorescent material including an aluminate that contains Mg, Mn, and at least one alkali earth metal selected from the group consisting of Ba, Sr, and Ca, a second fluorescent material having a different composition from the first fluorescent material, and a third fluorescent material. The first, second and third fluorescent materials have a peak emission wavelength in a range of from 510 nm to 525 nm, from 510 nm to 550 nm, and from 620 nm to 670 nm, respectively. The light-emitting device has an emission spectrum with a relative emission intensity of 35% or less at 500 nm and of 65% or less at 540 nm when a local maximum light-emitting emission intensity in a range of from 510 nm to 535 nm is taken as 100%.

    METHOD OF MANUFACTURING LIGHT EMITTING DEVICE
    4.
    发明申请
    METHOD OF MANUFACTURING LIGHT EMITTING DEVICE 审中-公开
    制造发光装置的方法

    公开(公告)号：US20160322542A1

    公开(公告)日：2016-11-03

    申请号：US15207003

    申请日：2016-07-11

    Applicant: Nichia Corporation

    Inventor： Seitaro AKAGAWA ,  Tomokazu YOSHIDA

    IPC: H01L33/50 ,  H01L33/56

    CPC classification number: H01L33/502 ,  C09K11/617 ,  C09K11/7734 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2924/181 ,  H01L2933/0041 ,  H01L2924/00014 ,  H01L2924/00012

    Abstract: A method of manufacturing a light emitting device can be provided. The method includes: providing a package having side walls which define a recess; disposing a light emitting element in the recess; injecting a sealing material in the recess of the package, sedimenting centrifugally the fluorescent material particles toward a bottom surface in the recess to form a sealing member that comprises a first sealing member portion and a second sealing member portion; and curing the binder to form a cured sealing member. The sealing material includes a binder and fluorescent material particles that includes particles of fluoride fluorescent material that have a composition including tetravalent manganese ions, at least one selecting from the group consisting of alkali metal elements and NH4+ and at least one selecting from the group consisting of Group 4 elements and Group 14 elements. The first sealing member portion covers the light emitting element, and includes a first binder portion and the fluorescent material particles located in the first binder portion. The second sealing member portion covers the first sealing portion, and includes a second binder portion and substantially no fluorescent material particles located in the second binder portion. The particles of fluoride fluorescent material include a surface region and an inner region, both the surface region and the inner region comprising tetravalent manganese ions. A tetravalent manganese ion concentration of the surface region of the particles of fluoride fluorescent material is lower than a tetravalent manganese ion concentration of the inner region of the particles of fluoride fluorescent material.

    Abstract translation: 可以提供制造发光器件的方法。 该方法包括：提供具有限定凹部的侧壁的包装; 将发光元件设置在所述凹部中; 将密封材料注入到所述封装的凹部中，将所述荧光材料颗粒离心沉淀到所述凹部中的底表面，以形成包括第一密封构件部分和第二密封构件部分的密封构件; 并固化粘合剂以形成固化的密封构件。 密封材料包括粘合剂和荧光材料颗粒，其包括具有包含四价锰离子的组成的氟化物荧光材料的颗粒，至少一种选自碱金属元素和NH 4 +，以及至少一种选自由以下组成的组： 第4组元素和第14组元素。 第一密封构件部分覆盖发光元件，并且包括位于第一粘结部分中的第一粘结部分和荧光材料颗粒。 第二密封构件部分覆盖第一密封部分，并且包括位于第二粘结部分中的第二粘合部分和基本上不存在荧光材料颗粒。 氟化物荧光材料的颗粒包括表面区域和内部区域，表面区域和内部区域都包含四价锰离子。 氟化物荧光体的粒子的表面积的四价锰离子浓度低于氟化物荧光体的粒子的内部区域的四价锰离子浓度。

    METHOD OF PRODUCING ALUMINATE FLUORESCENT MATERIAL, ALUMINATE FLUORESCENT MATERIAL, AND LIGHT EMITTING DEVICE
    6.
    发明申请
    METHOD OF PRODUCING ALUMINATE FLUORESCENT MATERIAL, ALUMINATE FLUORESCENT MATERIAL, AND LIGHT EMITTING DEVICE 审中-公开

    公开(公告)号：US20180265782A1

    公开(公告)日：2018-09-20

    申请号：US15857926

    申请日：2017-12-29

    Applicant: NICHIA CORPORATION

    Inventor： Kazuya NISHIMATA ,  Tomokazu YOSHIDA ,  Shoji HOSOKAWA

    IPC: C09K11/77 ,  C09K11/55 ,  C09K11/57 ,  C09K11/64 ,  H01L33/50

    CPC classification number: C09K11/7734 ,  C09K11/55 ,  C09K11/57 ,  C09K11/64 ,  H01L33/504

    Abstract: Disclosed are a method of producing an aluminate fluorescent material, such an aluminate fluorescent material, and a light emitting device. The aluminate fluorescent material production method includes: subjecting a first mixture prepared by mixing a compound containing at least one metal element selected from the group consisting of Ba, Sr and Ca, and at least one compound selected from the group consisting of a compound containing Mn and a compound containing Eu, and a compound containing Al, in which a compound containing Mg may be optionally mixed, to first heat treatment to give a first calcined product having an average particle diameter D1, as measured according to a Fisher Sub-Sieve Sizer method, of 6 μm or more; and subjecting a second mixture prepared by mixing a compound containing at least one metal element selected from the group consisting of Ba, Sr and Ca, at least one compound selected from the group consisting of a compound containing Mn and a compound containing Eu, and a compound containing Al, and the first calcined product whose content is 10% by mass or more and 90% by mass or less relative to the total amount of the second mixture, in which a compound containing Mg may be optionally mixed, to second heat treatment to give a second calcined product.

    LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR MANUFACTURING SAME
    10.
    发明申请
    LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR MANUFACTURING SAME 有权
    液晶显示装置及其制造方法

    公开(公告)号：US20150268492A1

    公开(公告)日：2015-09-24

    申请号：US14659897

    申请日：2015-03-17

    Applicant: DAI NIPPON PRINTING CO., LTD. ,  NICHIA CORPORATION

    Inventor： Kazuyuki HINO ,  Seiji TAWARAYA ,  Atsushi YAMAMOTO ,  Tomokazu YOSHIDA ,  Saiki YAMAMOTO

    IPC: G02F1/1335

    CPC classification number: G02F1/1336 ,  C09K11/025 ,  C09K11/617 ,  G02F1/133514 ,  G02F1/133516 ,  G02F1/133617 ,  G02F2001/133614

    Abstract: Provided is a liquid crystal display device which exhibits power saving property and high display quality and is capable of suppressing the time-dependent degradation in display quality. The above problem is solved by providing a liquid crystal display device comprising a liquid crystal cell unit including a color filter having a transparent substrate and a plurality of coloring layers formed on the transparent substrate, a counter substrate and a liquid crystal layer formed between the color filter and the counter substrate and a backlight unit including a light emitting device having a blue light emitting element, and a red fluorescent substance and a green fluorescent substance, and the plurality of coloring layers has a blue coloring layer containing a color material of a specific triarylmethane-based compound and the red fluorescent substance is a surface-treated M12[M21-xMn4+xF6] (for example, M1 represents K+ and M2 represents Si).

    Abstract translation: 本发明提供一种液晶显示装置，其具有省电性和高显示质量，并且能够抑制显示质量的时间依赖性劣化。 上述问题是通过提供一种液晶显示装置来解决的，该液晶显示装置包括一个液晶单元单元，该液晶单元包括具有透明基板的滤色器和在该透明基板上形成的多个着色层，相对基板和形成在该颜色之间的液晶层 过滤器和对置基板以及包括具有蓝色发光元件的发光器件和红色荧光物质和绿色荧光物质的背光单元，并且所述多个着色层具有蓝色着色层，该着色层含有特定 三芳基甲烷系化合物和红色荧光物质是经表面处理的M12 [M21-xMn4 + xF6]（例如，M1表示K +，M2表示Si）。

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