Light-emitting device comprising an EU(II)-activated phosphor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-029/22
H01L-029/02
H01L-029/227
H01L-033/00
C09K-011/02
C09K-011/08
C09K-011/77
출원번호
US-0531034
(2003-10-07)
우선권정보
EP-02022898(2002-10-14)
국제출원번호
PCT/IB03/004403
(2003-10-07)
§371/§102 date
20050412
(20050412)
국제공개번호
WO04/036962
(2004-04-29)
발명자
/ 주소
Schmidt,Peter
J체stel,Thomas
Mayr,Walter
Bausen,Hans Dieter
Schnick,Wolfgang
H철ppe,Henning
출원인 / 주소
Koninklijke Philips Electronics N.V.
인용정보
피인용 횟수 :
13인용 특허 :
6
초록▼
The invention concerns a light emitting device comprising a light emitting structure capable of emitting primary light of a wavelength less then 480 nm and a luminescent screen comprising a phosphor of general formula (Sr1-a-bCabBac MgdZne)SixNyOz:Eua, wherein 0.002≦a≦0.2, 0.0≦ b
The invention concerns a light emitting device comprising a light emitting structure capable of emitting primary light of a wavelength less then 480 nm and a luminescent screen comprising a phosphor of general formula (Sr1-a-bCabBac MgdZne)SixNyOz:Eua, wherein 0.002≦a≦0.2, 0.0≦ b≦0.25, 0.0≦c≦0.25, 0. 0≦d≦0.25, 0.0≦e≦0. 25, 1.5≦x≦2.5, 1.5≦ y≦2.5 and 1.5≦z≦2.5. The invention also concerns a luminescent screen comprising a phosphor of general formula (Sr1-a-bCabBacMgd Zne)SixNyOz:Eua, wherein 0. 002≦a≦0.2, 0.0≦b≦ 0.25, 0.0≦c≦0.25, 0.0≦ d≦0.25, 0.0≦e≦0.25, 1. 5≦x≦2.5, 1.5≦y≦2. 5 and 1.5≦z≦2.5. The invention also concerns a phosphor of general formula (Sr1-a-bCabBac MgdZne)SixNyOz:Eua, wherein 0.002≦a≦0.2, 0.0≦ b≦0.25, 0.0≦c≦0.25, 0. 0≦d≦0.25, 0.0≦e≦0. 25, 1.5≦x≦2.5, 1.5≦ y≦2.5 and 1.5 <z<2.5.
대표청구항▼
The invention claimed is: 1. A light emitting device comprising a light emitting structure capable of emitting primary light of a wavelength less then 480 nm and a luminescent screen comprising a phosphor of general formula (Sr1-a-bCabBacMgdZne)Si xNyOz:Eua, wherein 0.002≦ a≦0.2, 0.0
The invention claimed is: 1. A light emitting device comprising a light emitting structure capable of emitting primary light of a wavelength less then 480 nm and a luminescent screen comprising a phosphor of general formula (Sr1-a-bCabBacMgdZne)Si xNyOz:Eua, wherein 0.002≦ a≦0.2, 0.0≦b≦0.25, 0. 0≦c≦0.25, 0.0≦d≦0. 25, 0.0≦e≦0.25, 1.5≦ x≦2.5, 1.5≦y≦2.5 and 1.5< z<2.5. 2. The light emitting device according to claim 1, wherein the light emitting structure capable of emitting primary light of a wavelength from 450 nm to 480 nm. 3. The light-emitting device according to claim 1, wherein the light emitting structure is a blue-emitting LED. 4. The light-emitting device according to claim 1, wherein the phosphor is comprised in a thin film layer. 5. The light emitting device according to claim 1, wherein the luminescent screen comprises a green phosphor of general formula (Sr1-a-bCabBacMgdZne)Si xNyOz:Eua, wherein 0.002≦ a≦0.2, 0.0≦b≦0.25, 0. 0≦c≦0.25, 0.0≦d≦0. 25, 0.0≦e≦0.25, 1.5≦ x≦2.5, 1.5≦y≦2.5 and 1.5< z<2.5 and a red phosphor. 6. The light emitting device according to claim 5, wherein the red phosphor is selected from the group of (Sr1-x-yBa xCay)S:Eu wherein 0≦x<1 and 0≦y<1; CaS:Ce,Cl; Li2Sr SiO4:Eu; (Sr1-xCax)SiO4:Eu wherein 0≦x< 1; (Y1-xGdx)3(Al1-yGay) 5O12;Ce wherein 0≦x<1 and 0≦ y<1 and (Sr1-x-yBaxCay)2Si 5N8:Eu wherein 0≦x<1 and 0≦ y<1. 7. The light-emitting device according to claim 1, wherein the device is a lamp. 8. A luminescent screen comprising a phosphor of general formula (Sr1-a-bCabBacMgdZne) SixNyOz:Eua, wherein 0. 002≦a≦0.2, 0.0≦b≦ 0.25, 0.0≦c≦0.25, 0.0≦ d≦0.25, 0.0≦e≦0.25, 1. 5≦x≦2.5, 1.5≦y≦2. 5 and 1.5<z<2.5. 9. A phosphor of general formula (Sr1-a-bCab BacMgdZne)SixNyOz :Eua, wherein 0.002≦a≦0.2, 0. 0≦b≦0.25, 0.0≦c≦0. 25, 0.0≦d≦0.25, 0.0≦ e≦0.25, 1.5≦x≦2.5, 1. 5≦y≦2.5 and 1.5<z<2.5. 10. A phosphor according to claim 9, wherein 1. 9≦x≦2.1, 1.9≦y≦2. 1 and 1.9<z<2.1. 11. A phosphor according to claim 9, of general formula Sr 1-aSi2N2O2:Eua.
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