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:
Jul. 20, 2010
Filed:
Jun. 14, 2007
Teng-ming Chen, Hsinchu, TW;
Yi-chen Chiu, Hsinchu, TW;
Teng-Ming Chen, Hsinchu, TW;
Yi-Chen Chiu, Hsinchu, TW;
National Chiao-Tung University, Hsinchu, TW;
Abstract
This invention relates to a green phosphor and a process for producing the same, wherein the phosphor is represented by a chemical formula: M(TbLa)SiO, where M includes at least one of Ca and Sr, and 0<x<1, and is obtained by mixing at proper ratios and calcining at a high temperature in an oxygen-containing atmosphere. When the produced phosphor is excited by a near ultra-violet light of 378 nm, a green light having its main peak at 541 nm is emitted, and the x and y values of its CIE coordinate are in respective ranges of (0.34-0.37) and (0.52-0.55). The method for producing the phosphor includes steps of weighing and mixing the ingredient powder, and calcining in the oxygen-containing atmosphere at high temperature to form the phospher.