JP2007099878A5 - - Google Patents

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JP2007099878A5
JP2007099878A5 JP2005290570A JP2005290570A JP2007099878A5 JP 2007099878 A5 JP2007099878 A5 JP 2007099878A5 JP 2005290570 A JP2005290570 A JP 2005290570A JP 2005290570 A JP2005290570 A JP 2005290570A JP 2007099878 A5 JP2007099878 A5 JP 2007099878A5
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Japan
Prior art keywords
light
emitting device
wavelength
phosphor
general formula
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JP2005290570A
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Japanese (ja)
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JP2007099878A (en
JP4972904B2 (en
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Priority claimed from JP2005290570A external-priority patent/JP4972904B2/en
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Description

以下、本発明の実施の形態について詳細に説明するが、本発明は以下の実施の形態に限
定されるものではなく、その要旨の範囲内で種々変形して実施することができる。なお、本明細書において「〜」を用いて表される数値範囲は、「〜」の前後に記載される数値を下限値および上限値として含む範囲を意味する。
本発明の蛍光体は、下記一般式（１）の化学組成を有する結晶相を含有することを特徴とする。 Will be described below in detail embodiments of the present invention, the invention is not to be limited to the following embodiments may be modified in various ways within the scope of the invention. In the present specification, a numerical range represented by using “to” means a range including numerical values described before and after “to” as a lower limit value and an upper limit value.
The phosphor of the present invention contains a crystal phase having a chemical composition represented by the following general formula (1).

Claims (6)

下記一般式（１）で表される化学組成を有する結晶相を含有し、波長４００ｎｍの光に対する反射率をＲ（４００）、波長６２５ｎｍの光に対する反射率をＲ（６２５）としたとき、下記式（２）及び（３）を満足することを特徴とする蛍光体。
（Ｌｎ１−ｘＥｕｘ）２Ｏ２Ｓ ・・（１）
（一般式（１）において、Ｌｎは、Ｓｃ、Ｙ、Ｌａ、Ｇｄ、Ｌｕ及びＢｉから選ばれる少なくとも一種の元素を表し、ｘは、０．０５≦ｘ≦０．１５を満足する数である。）
Ｒ（４００）≦４０％ ・・（２）
Ｒ（６２５）／Ｒ（４００）≧２ ・・（３） When a crystal phase having a chemical composition represented by the following general formula (1) is contained , the reflectance for light with a wavelength of 400 nm is R (400), and the reflectance for light with a wavelength of 625 nm is R (625), A phosphor satisfying the formulas (2) and (3) .
(Ln 1-x Eu x ) 2 O 2 S (1)
(In General Formula (1), Ln represents at least one element selected from Sc, Y, La, Gd, Lu, and Bi, and x is a number that satisfies 0.05 ≦ x ≦ 0.15. .)
R (400) ≦ 40% ・ ・ (2)
R (625) / R (400) ≧ 2 (3) Ｌｎは、少なくともＬａを含有し、Ｌａ全体に対するＬａの含有量が５０モル％以上であることを特徴とする請求項１に記載の蛍光体。  The phosphor according to claim 1, wherein Ln contains at least La, and the content of La with respect to the entire La is 50 mol% or more. メジアン径Ｄ５０が１５μｍ以上であることを特徴とする請求項１又は２のいずれか１項に記載の蛍光体。   The phosphor according to any one of claims 1 and 2, wherein a median diameter D50 is 15 µm or more. ピーク波長が３５０ｎｍ〜４１５ｎｍである光を発生する第１の発光体と、当該第１の発光体からの光の照射によって可視光を発生する第２の発光体とを有する発光装置において、第２の発光体が請求項１乃至３のいずれか１項に記載の蛍光体を含有することを特徴とする発光装置。   In a light emitting device having a first light emitter that generates light having a peak wavelength of 350 nm to 415 nm and a second light emitter that generates visible light by irradiation of light from the first light emitter, A light emitting device comprising: the phosphor according to claim 1. 請求項４に記載の発光装置を含むことを特徴とする画像表示装置。   An image display device comprising the light-emitting device according to claim 4. 請求項４に記載の発光装置を含むことを特徴とする照明装置。   An illuminating device comprising the light emitting device according to claim 4.
JP2005290570A 2005-10-03 2005-10-03 Phosphor, method for manufacturing the phosphor, light-emitting device using the phosphor, image display device, and illumination device Expired - Fee Related JP4972904B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005290570A JP4972904B2 (en) 2005-10-03 2005-10-03 Phosphor, method for manufacturing the phosphor, light-emitting device using the phosphor, image display device, and illumination device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005290570A JP4972904B2 (en) 2005-10-03 2005-10-03 Phosphor, method for manufacturing the phosphor, light-emitting device using the phosphor, image display device, and illumination device

Publications (3)

Publication Number Publication Date
JP2007099878A JP2007099878A (en) 2007-04-19
JP2007099878A5 true JP2007099878A5 (en) 2008-11-06
JP4972904B2 JP4972904B2 (en) 2012-07-11

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JP2005290570A Expired - Fee Related JP4972904B2 (en) 2005-10-03 2005-10-03 Phosphor, method for manufacturing the phosphor, light-emitting device using the phosphor, image display device, and illumination device

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110182072A1 (en) 2007-06-29 2011-07-28 Mitsubishi Chemical Corporation Phosphor, production method of phosphor, phosphor-containing composition, and light emitting device
JP2009199872A (en) * 2008-02-21 2009-09-03 Toyoda Gosei Co Ltd Light source device
WO2009107535A1 (en) * 2008-02-25 2009-09-03 株式会社東芝 White led lamp, backlight, light emitting device, display device and lighting device
CN102792473B (en) * 2010-03-12 2015-11-25 株式会社东芝 White light illumination device
JP6244857B2 (en) * 2013-11-26 2017-12-13 日亜化学工業株式会社 Light emitting device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4905627B2 (en) * 2005-04-25 2012-03-28 株式会社東芝 Green phosphor, white LED, backlight using the same, and liquid crystal display device
KR20070119750A (en) * 2005-04-26 2007-12-20 가부시끼가이샤 도시바 White led, and backlight and liquid crystal display device using the same

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