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US 9,328,286 B2Granted
Phosphor and light emitting device
AssigneesLG Innotek Co., Ltd., Force4 Corp.
InventorsChoong Youl Kim, Joong In An, Seung Hyok Park, Ho Shin Yoon, Chang Hee Lee
Life of this patent
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Abstract
A phosphor and a light emitting device containing the phosphor are provided. According to an embodiment, the phosphor is expressed in a chemical formula of LxMyCz1Nz2:Aa where L is at least one of an alkaline earth metal, a transition metal, Zn, Cd, Al, Ga, In, Ti, Ge, and Sn; M is at least one of B, Si, P, S, F, Cl, I, and Se; and A is at least one of an alkaline rare earth metal and the transition metal, and where 0<x≦5, 0≦y≦5, 1≦z1≦10, 1≦z2≦10, and 0<a≦1.
Claims8
A phosphor expressed in a following chemical formula:
- LxMyCz1Nz2:Aa
- where L is at least one selected from the group consisting of an alkaline earth metal, a transition metal, Zn, Cd, Al, Ga, In, Ti, Ge, and Sn;
- M is at least one selected from the group consisting of B, Si, P, S, F, Cl, I, and Se;
- C is carbon;
- N is nitrogen, and A is at least one selected from the group consisting of an alkaline rare earth metal and the transition metal,
- where 0<x≦5, y=0, 1≦z1≦10, 1≦z2≦10, and 0<a≦1 and
- wherein the phosphor is a cyan-based phosphor, and wherein the chemical formula is expressed as Ba(CN)2:Eu2+.
4 more elements
A light emitting device comprising:
- a light emitting diode chip;
- a substrate supporting the light emitting diode chip;
- at least one electrode or conductive layer electrically connected to the light emitting diode chip;
- and
- a first phosphor on the light emitting diode chip,
- wherein the first phosphor is expressed in a following chemical formula:
- LxMyCz1Nz2:A
- where L is at least one selected from the group consisting of an alkaline earth metal, a transition metal, Zn, Cd, Al, Ga, In, Ti, Ge, and Sn;
- M is at least one selected from the group consisting of B, Si, P, S, F, Cl, I, and Se;
- C is carbon;
- N is nitrogen, and A is at least one selected from the group consisting of an alkaline rare earth metal and the transition metal,
- where 0<x≦5, y=0, 1≦z1≦10, 1≦z2≦10, and 0<a≦1 and
- wherein the phosphor is a cyan-based phosphor, and
- wherein the chemical formula is expressed as Ba(CN)2:Eu2+.
11 more elements
Dependencies are inferred from the claim text.