JP2016020486A - 黄色発光蛍光体及びそれを用いた発光素子パッケージ - Google Patents
黄色発光蛍光体及びそれを用いた発光素子パッケージ Download PDFInfo
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Abstract
Description
110,120、210、220 リードフレーム
130,240 発光素子
140,250 ワイヤ
150,260 光透過性樹脂
170、171、172,270、271、272 蛍光体
200 表面実装型発光素子パッケージ
230 パッケージボディー
Claims (20)
- BaYSi4N7:Eu、Ba3Si6O12N2:Eu、CaSi2O2N2:Eu、SrYSi4N7:Eu、Caを金属成分として有するα型SiAlON(Ca−α−SiAlON:Yb)、Lu3Al5O12:Ce、SrSi2O2N2:Eu、及びβ型SiAlON:Euのうちの少なくともいずれか1つを含み、中心波長が510〜550nmの帯域に位置する光を放出する第1蛍光体と、
Liを金属成分として有するα型SiAlON(Li−α−SiAlON:Eu)、及びCaを金属成分として有するα型SiAlON(Ca−α−SiAlON:Eu)のうちの少なくともいずれか1つを含み、前記第1蛍光体と混合されて、中心波長が560〜600nmの帯域に位置する光を発光する第2蛍光体と、
CaAlSiN3:Eu、(Sr,Ca)AlSiN3:Eu、Sr2Si5N8:Eu、K2SiF6:Mn、La3Si6N11:Ce、SrAlSiN3:Eu、SrCN2:Eu、Ca2Si5N8:Eu、Ba2Si5N8:Eu、SrAlSi4N7:Eu、及び(Sr,Ba)SiN2:Euのうちの少なくともいずれか1つを含み、前記第1及び第2蛍光体と混合されて、中心波長が610〜630nmの帯域に位置する光を発光し、550nmの波長での光吸収率が50%以下である第3蛍光体とを含んで構成される、黄色発光蛍光体。 - 前記第2蛍光体は、Liを金属成分として有するα型SiAlON(Li−α−SiAlON:Eu)である、請求項1に記載の黄色発光蛍光体。
- 前記第1蛍光体は、化学式Lu3Al5O12:Ceで表される蛍光体である、請求項1に記載の黄色発光蛍光体。
- 前記第1蛍光体は、前記第1蛍光体乃至第3蛍光体の合計を100wt%としたとき、62〜75.8wt%の含量を有する、請求項1に記載の黄色発光蛍光体。
- 前記第2蛍光体は、前記第1蛍光体乃至第3蛍光体の合計を100wt%としたとき、20〜35wt%の含量を有する、請求項1に記載の黄色発光蛍光体。
- 前記第3蛍光体は、前記第1蛍光体乃至第3蛍光体の合計を100wt%としたとき、3〜4.2wt%の含量を有する、請求項1に記載の黄色発光蛍光体。
- 前記第2蛍光体に対する第3蛍光体の割合は、8.6〜21.0%である、請求項1に記載の黄色発光蛍光体。
- 前記第3蛍光体は、(Sr,Ca)AlSiN3:Euで表される蛍光体である、請求項1に記載の黄色発光蛍光体。
- 前記黄色発光蛍光体は、480nm〜780nmの波長帯域の発光スペクトルの半値幅が120nm以上である、請求項1に記載の黄色発光蛍光体。
- 黄色発光蛍光体であって、
BaYSi4N7:Eu、Ba3Si6O12N2:Eu、CaSi2O2N2:Eu、SrYSi4N7:Eu、Caを金属成分として有するα型SiAlON(Ca−α−SiAlON:Yb)、Lu3Al5O12:Ce、SrSi2O2N2:Eu、及びβ型SiAlON:Euのうちの少なくともいずれか1つを含み、中心波長が510〜550nmの帯域に位置する光を放出する第1蛍光体と、
Liを金属成分として有するα型SiAlON(Li−α−SiAlON:Eu)、及びCaを金属成分として有するα型SiAlON(Ca−α−SiAlON:Eu)のうちの少なくともいずれか1つを含み、中心波長が560〜600nmの帯域に位置する光を発光する第2蛍光体と、
CaAlSiN3:Eu、(Sr,Ca)AlSiN3:Eu、Sr2Si5N8:Eu、K2SiF6:Mn、La3Si6N11:Ce、SrAlSiN3:Eu、SrCN2:Eu、Ca2Si5N8:Eu、Ba2Si5N8:Eu、SrAlSi4N7:Eu、及び(Sr,Ba)SiN2:Euのうちの少なくともいずれか1つを含み、中心波長が610〜630nmの帯域に位置する光を発光する第3蛍光体とを含み、
前記第1乃至第3蛍光体の混合物は、近紫外線または青色励起光によって励起されて、480〜780nmの波長帯域に中心波長が位置するスペクトルの光を発光し、前記スペクトルの半値幅は120nm以上である、黄色発光蛍光体。 - 前記第3蛍光体は、前記励起光による光の吸収を最小化するように設計された、請求項11に記載の黄色発光蛍光体。
- 前記第3蛍光体は、550nmの波長での光吸収率が50%以下である、請求項11に記載の黄色発光蛍光体。
- 前記第1蛍光体は、前記第1蛍光体乃至第3蛍光体の合計を100wt%としたとき、62〜75.8wt%の含量を有する、請求項11に記載の黄色発光蛍光体。
- 前記第2蛍光体は、前記第1蛍光体乃至第3蛍光体の合計を100wt%としたとき、20〜35wt%の含量を有する、請求項11に記載の黄色発光蛍光体。
- 前記第3蛍光体は、前記第1蛍光体乃至第3蛍光体の合計を100wt%としたとき、3〜4.2wt%の含量を有する、請求項11に記載の黄色発光蛍光体。
- 黄色発光蛍光体であって、
化学式Lu3Al5O12:Ceで表される蛍光体を含み、中心波長が510〜550nmの帯域に位置する光を放出する第1蛍光体と、
Liを金属成分として有するα型SiAlON(Li−α−SiAlON:Eu)を含み、中心波長が560〜600nmの帯域に位置する光を発光する第2蛍光体と、
(Sr,Ca)AlSiN3:Euで表される蛍光体を含み、中心波長が610〜630nmの帯域に位置する光を発光する第3蛍光体とを含み、
前記第1蛍光体、第2蛍光体及び第3蛍光体の重量比は、前記第1蛍光体乃至第3蛍光体の合計を100wt%としたとき、それぞれ62〜75.8wt%、20〜35wt%及び3〜4.2wt%である、黄色発光蛍光体。 - 前記第3蛍光体は、550nmの波長での光吸収率が50%以下である、請求項17に記載の黄色発光蛍光体。
- 請求項1、11及び17のいずれか一項に記載の黄色発光蛍光体と、
前記黄色発光蛍光体を励起させる近紫外線または青色励起光を発光する発光素子とを含む、発光素子パッケージ。
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CN105255494B (zh) | 2018-06-29 |
TW201602313A (zh) | 2016-01-16 |
US9321958B2 (en) | 2016-04-26 |
JP5956655B2 (ja) | 2016-07-27 |
EP2975100A1 (en) | 2016-01-20 |
US20160009990A1 (en) | 2016-01-14 |
TWI567167B (zh) | 2017-01-21 |
EP2975100B1 (en) | 2017-03-29 |
KR101467808B1 (ko) | 2014-12-03 |
CN105255494A (zh) | 2016-01-20 |
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