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. 26, 2006
Filed:
Apr. 17, 2003
James Alexander Robert Stiles, Toronto, CA;
John Wesley Moore, Richmond Hill, CA;
Vincent Joseph Alfred Pugliese, Oakville, CA;
Hiroki Hamada, Osaka, JP;
Isao Yoshida, Ibaraki, JP;
James Alexander Robert Stiles, Toronto, CA;
John Wesley Moore, Richmond Hill, CA;
Vincent Joseph Alfred Pugliese, Oakville, CA;
Hiroki Hamada, Osaka, JP;
Isao Yoshida, Ibaraki, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
iFire Technology Inc., Fort Saskatchewan, CA;
Abstract
A thin film phosphor for an electroluminescent device, the phosphor being selected from the group consisting of thioaluminates, thiogallates and thioindates having at least one cation selected from elements of Groups IIA and IIB of the Periodic Table of Elements. The phosphor being activated by a rare earth metal and containing oxygen as a partial substitute for a portion of the sulphur in the crystal lattice of the thiogallate, thioindate or thioaluminate. The phosphor is a single phase homogeneous compound and provides improved luminance stability. An electroluminescent device comprising the thin film phosphor is also described and methods of making the phosphor of the invention.