The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 2011
Filed:
Apr. 28, 2009
Yu-sheng Tang, Kaohsiung County, TW;
Ru-shi Liu, Taipei County, TW;
Shu-fen HU, Taipei County, TW;
Chien-yuan Wang, Kaohsiung County, TW;
Yu-Sheng Tang, Kaohsiung County, TW;
Ru-Shi Liu, Taipei County, TW;
Shu-Fen Hu, Taipei County, TW;
Chien-Yuan Wang, Kaohsiung County, TW;
Epistar Corporation, Hsinchu, TW;
Abstract
This invention discloses a wavelength converting material. The wavelength converting material comprises a metal haloaluminate compound phosphor with a chemical formula MAlOX:R, 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.