JPWO2011083671A1 - 蛍光体、発光装置およびそれを用いた液晶表示装置 - Google Patents
蛍光体、発光装置およびそれを用いた液晶表示装置 Download PDFInfo
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 30
- 229910052693 Europium Inorganic materials 0.000 claims abstract description 21
- 229910003564 SiAlON Inorganic materials 0.000 claims abstract description 21
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 150000004767 nitrides Chemical class 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 7
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical group [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052738 indium Inorganic materials 0.000 claims description 6
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 5
- 229910052727 yttrium Inorganic materials 0.000 claims description 5
- 229910052788 barium Inorganic materials 0.000 claims description 4
- 229910052712 strontium Inorganic materials 0.000 claims description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052746 lanthanum Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052706 scandium Inorganic materials 0.000 claims description 3
- 229910002601 GaN Inorganic materials 0.000 claims description 2
- 229910052765 Lutetium Inorganic materials 0.000 claims description 2
- 238000002835 absorbance Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 15
- 239000013078 crystal Substances 0.000 description 14
- 102100032047 Alsin Human genes 0.000 description 8
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- 238000011161 development Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- GEIAQOFPUVMAGM-UHFFFAOYSA-N ZrO Inorganic materials [Zr]=O GEIAQOFPUVMAGM-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
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- 230000001771 impaired effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 239000001301 oxygen Substances 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
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- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
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Abstract
Description
本発明の緑色系発光蛍光体は、一般式(A)中、0.01≦a≦0.2であることが好ましい。
上記一般式(A)中、aの値は、0.005≦a≦0.4であり、b+c=12であり、d+e=16である。上記一般式(A)中、aの値が0.005未満であると、十分な明るさが得られないという不具合があり、またaの値が0.4を超えると、濃度消光などにより、明るさが大きく低下するという不具合がある。なお、特性の安定性、母体の均質性から、上記一般式(A)中のaの値は、0.01≦a≦0.2であるのが好ましい。
上記一般式(B)中、MIはMg、Ca、SrおよびBaから選ばれる少なくとも1種のアルカリ土類金属元素を示す。また上記一般式(B)中、MIIはAl、Ga、In、Sc、Y、La、GdおよびLuから選ばれる少なくとも1種の3価の金属元素を示す。中でも、より一層高効率に赤色光を発光することができることから、MIIはAl、GaおよびInから選ばれる少なくとも1種の元素であることが好ましい。また上記一般式(B)中、xの値は、0.001≦x≦0.10であり、0.005≦x≦0.05であるのが好ましい。xの値が0.001未満であると、十分な明るさが得られない傾向にあり、xの値が0.10を超えると、濃度消光などにより、明るさが大きく低下するという傾向にあるためである。
発光素子として、450nmにピーク波長を有する窒化ガリウム(GaN)系半導体を用いた。波長変換部には、Eu0.05Si11.55Al0.45O0.35N15.65(β型SiAlON)なる組成を有する緑色系発光蛍光体であり、平均粒度(d1)が11.3μm、メディアン径(50%D)が18.6μm、50%D/d1=1.65、600nmにおける吸収率が5.9%である特性値を有するものを用いた。なお、この蛍光体は主として、Al濃度(c)を0.50に制御することによって、調製されたものである。この蛍光体を、所定の割合にて媒質としての熱硬化型のシリコーン樹脂製の封止材中に分散させて分散し、発光素子を封止して、波長変換部を作製し、実施例1の発光装置を作製した。このようにして作製した実施例1の発光装置について、初期および5000時間後の明るさを測定した。なお、明るさは順電流(IF)30mAにて点灯し、発光装置からの光出力(光電流)を測定した。
表2に示すような種々の平均粒度(d1)、メディアン径(50%D)、50%D/d1値、600nmにおける吸収率を有する蛍光体を用いたこと以外は実施例1と同様にして、それぞれ実施例2、3、比較例2、3の発光装置を作製した。実施例1と同様にして測定した特性(明るさ)の結果を表3に示す。表3から、実施例2、3の発光装置は、比較例2、3の発光装置に比し、著しく明るくかつ明るさの変動が小さいことが分かる。
発光素子として、460nmにピーク波長を有する窒化ガリウム(GaN)系半導体を用いた。波長変換部には、Eu0.05Si11.55Al0.45O0.35N15.65(β型SiAlON)なる組成を有する緑色系発光蛍光体であり、平均粒度(d1)が11.3μm、メディアン径(50%D)が18.6μm、50%D/d1=1.65、600nmにおける吸収率が5.9%である特性値を有するものと、(Ca0.99Eu0.01)AlSiN3(D50値:12.8μm)なる組成を有する2価のユーロピウム付活窒化物赤色系発光蛍光体とを用いた。この蛍光体および赤色系発光蛍光体を、所定の割合にて媒質としての熱硬化型のシリコーン樹脂製の封止材中に分散させて分散し、発光素子を封止して、波長変換部を作製し、実施例4の発光装置を作製した。このようにして作製した実施例4の発光装置について、初期および5000時間後の明るさおよび色度を測定した。なお、明るさは順電流(IF)30mAにて点灯し、発光装置からの光出力(光電流)を測定し、色度はMCPD−2000(大塚電子製)を用い、測定した。
表5に示すような種々の平均粒度(d1)、メディアン径(50%D)、50%D/d1値、600nmにおける吸収率を有するβ型SiAlON蛍光体を用いたこと以外は実施例4と同様にして、それぞれ実施例5〜9、比較例5〜9の発光装置を作製した。実施例4と同様にして測定した特性(明るさおよび色度)の評価結果を表6に示す。表6から、実施例5〜9の発光装置は、比較例5〜9の発光装置に比し、著しく明るく、かつ明るさおよび色度の変動が小さいことが分かる。
Claims (12)
- 一般式(A):EuaSibAlcOdNe
(一般式(A)中、0.005≦a≦0.4、b+c=12、d+e=16を満足する数である。)
で実質的に表され、平均粒度(d1)(空気透過法)が9〜16μmであり、粒度分布でのメディアン径(50%D)が12.5〜35μmであり、50%D/d1=1.4〜2.2であり、かつ600nmにおける吸収率が8.0%以下であるβ型SiAlONである、2価のユーロピウム付活酸窒化物緑色系発光蛍光体。 - 10μm≦d1≦13μm、50%D/d1=1.6〜2.0かつ600nmにおける吸収率が7.0%以下である、請求項1に記載の蛍光体。
- 一般式(A)中、c≧0.3である、請求項1に記載の蛍光体。
- 一般式(A)中、0.01≦a≦0.2である、請求項1に記載の蛍光体。
- ピーク波長が430〜480nmの一次光を発する窒化ガリウム系半導体である発光素子と、前記一次光の一部を吸収して、一次光の波長よりも長い波長を有する二次光を発する波長変換部とを備えた発光装置であって、前記波長変換部は、
一般式(A):EuaSibAlcOdNe
(一般式(A)中、0.005≦a≦0.4、b+c=12、d+e=16を満足する数である。)
で実質的に表され、平均粒度(d1)(空気透過法)が9〜16μmであり、粒度分布でのメディアン径(50%D)が12.5〜35μmであり、50%D/d1=1.4〜2.2であり、かつ600nmにおける吸収率が8.0%以下であるβ型SiAlONである、2価のユーロピウム付活酸窒化物緑色系発光蛍光体を含む、発光装置。 - 蛍光体が、10μm≦d1≦13μm、50%D/d1=1.6〜2.0かつ600nmにおける吸収率が7.0%以下である、請求項5に記載の発光装置。
- 一般式(A)中、c≧0.3である、請求項5に記載の発光装置。
- 一般式(A)中、0.01≦a≦0.2である、請求項5に記載の発光装置。
- 一般式(B):(MI1-xEux)MIISiN3
(一般式(B)中、MIはMg、Ca、SrおよびBaから選ばれる少なくとも1種のアルカリ土類金属元素を示し、MIIはAl、Ga、In、Sc、Y、La、GdおよびLuから選ばれる少なくとも1種の3価の金属元素を示し、0.001≦x≦0.10を満足する数である。)
で実質的に表される2価のユーロピウム付活窒化物赤色系発光蛍光体を波長変換部に含む、請求項5に記載の発光装置。 - 一般式(B)中、MIIはAl、GaおよびInから選ばれる少なくとも1種の元素である、請求項5に記載の発光装置。
- 請求項5に記載の発光装置を点光源として複数含むバックライト光源装置。
- 液晶パネルと、
液晶パネルの背面に配置された請求項11に記載のバックライト光源装置とを備える、液晶表示装置。
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US8237348B2 (en) | 2008-03-03 | 2012-08-07 | Sharp Kabushiki Kaisha | Light-emitting device |
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CA3072755C (en) | 2017-08-18 | 2024-04-30 | Thorlabs, Inc. | Broadband light source based on crystalline phosphor |
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US6608332B2 (en) | 1996-07-29 | 2003-08-19 | Nichia Kagaku Kogyo Kabushiki Kaisha | Light emitting device and display |
JP3609709B2 (ja) | 2000-09-29 | 2005-01-12 | 株式会社シチズン電子 | 発光ダイオード |
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JP3921545B2 (ja) | 2004-03-12 | 2007-05-30 | 独立行政法人物質・材料研究機構 | 蛍光体とその製造方法 |
JP4517783B2 (ja) | 2004-08-31 | 2010-08-04 | 日亜化学工業株式会社 | 希土類硼アルミン酸塩蛍光体及びそれを用いた発光装置 |
JP5086641B2 (ja) | 2004-09-22 | 2012-11-28 | 株式会社東芝 | 発光装置とそれを用いたバックライトおよび液晶表示装置 |
JP4934792B2 (ja) * | 2005-08-04 | 2012-05-16 | Dowaエレクトロニクス株式会社 | 蛍光体及びその製造方法、並びに当該蛍光体を用いた発光装置 |
WO2007066733A1 (ja) * | 2005-12-08 | 2007-06-14 | National Institute For Materials Science | 蛍光体とその製造方法および発光器具 |
JP4238269B2 (ja) | 2006-02-02 | 2009-03-18 | 三菱化学株式会社 | 複合酸窒化物蛍光体、それを用いた発光装置、画像表示装置、照明装置及び蛍光体含有組成物、並びに、複合酸窒化物 |
KR20090018085A (ko) | 2006-05-10 | 2009-02-19 | 덴끼 가가꾸 고교 가부시키가이샤 | 사이알론 형광체 및 그 제조 방법 및 그것을 이용한 조명기구 및 발광소자 |
JP2007308593A (ja) * | 2006-05-18 | 2007-11-29 | Denki Kagaku Kogyo Kk | サイアロン蛍光体の製造方法、サイアロン蛍光体、照明器具 |
JP5151980B2 (ja) | 2006-07-05 | 2013-02-27 | 宇部興産株式会社 | サイアロン系酸窒化物蛍光体およびその製造方法 |
JP2008120938A (ja) * | 2006-11-14 | 2008-05-29 | Sharp Corp | 蛍光体およびその製造方法、ならびに半導体発光装置および画像表示装置 |
TWI357927B (en) | 2006-11-20 | 2012-02-11 | Denki Kagaku Kogyo Kk | Fluorescent substance and manufacturing method the |
JP5367218B2 (ja) | 2006-11-24 | 2013-12-11 | シャープ株式会社 | 蛍光体の製造方法および発光装置の製造方法 |
EP2175006B1 (en) | 2007-07-09 | 2013-07-24 | Sharp Kabushiki Kaisha | Group of phosphor particles, and light-emitting device using the same |
JP2009019163A (ja) * | 2007-07-13 | 2009-01-29 | Sharp Corp | 発光装置用蛍光体粒子集合体、発光装置、および液晶表示用バックライト装置 |
JP2009092253A (ja) | 2007-10-04 | 2009-04-30 | Masaji Furukawa | 二重煙突燃焼器具 |
CN101821356B (zh) * | 2007-10-10 | 2013-11-06 | 宇部兴产株式会社 | β-硅铝氧氮陶瓷荧光体粉末及其制造方法 |
JP2009167338A (ja) * | 2008-01-18 | 2009-07-30 | Sharp Corp | 波長変換部材およびこれを備える発光装置、ならびに蛍光体 |
JP5589002B2 (ja) * | 2010-01-08 | 2014-09-10 | シャープ株式会社 | 蛍光体、発光装置およびそれを用いた液晶表示装置 |
JP4740379B1 (ja) | 2010-02-25 | 2011-08-03 | 電気化学工業株式会社 | β型サイアロン蛍光体、その用途及びβ型サイアロン蛍光体の製造方法 |
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