Back to results
US 8,026,659 B2Granted
Wavelength converting material and use of same
AssigneeEpistar Corporation
InventorsYu-Sheng Tang, Ru-Shi Liu, Shu-Fen Hu, Chien-Yuan Wang
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeEpistar Corporation
InventorsYu-Sheng Tang, Ru-Shi Liu, Shu-Fen Hu, Chien-Yuan Wang
Estimating the term…
This invention discloses a wavelength converting material. The wavelength converting material comprises a metal haloaluminate compound phosphor with a chemical formula Mw-pAlyOzXq:Rp, wherein M is at least one element selected from the group of Be, Mg, Ca, Sr, Ba and Zn; X is at least one element selected from the group of F, Cl, Br, and I; R is one or more elements selected from the group of the transition metals and at least one element selected from the lanthanide series. Because the emitting wavelength of the metal haloaluminate compound phosphor is 550˜650 nm which is from the green to the red light spectrum, the white light mixed by the converted light of the metal haloaluminate phosphor and the blue light has better color rendering index. Besides, this invention also discloses the optoelectronic devices comprising the metal haloaluminate compound phosphor.
A wavelength converting material comprising metal haloaluminate compound, wherein the metal haloaluminate compound is excited to radiate light with wavelength between 550 nm and 650 nm.
An optoelectronic device comprising:
An optoelectronic device comprising:
Dependencies are inferred from the claim text.