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:
May. 19, 2009
Filed:
Aug. 27, 2003
Guo Liu, Brampton, CA;
Alexander Kosyachkov, Mississauga, CA;
Yue (Helen) Xu, Burlington, CA;
James Alexander Stiles, Toronto, CA;
Guo Liu, Brampton, CA;
Alexander Kosyachkov, Mississauga, CA;
Yue (Helen) Xu, Burlington, CA;
James Alexander Stiles, Toronto, CA;
Ifire IP Corporation, Fort Saskatchewan, Alberta, CA;
Abstract
An improved fine grained zinc sulfide phosphor is provided for use in ac electroluminescent displays. The fine-grained zinc sulfide phosphor film exhibits improved luminance and may be used in conjunction with a structure or substance to minimize or prevent reaction of the fine grained phosphor with oxygen. The invention is particularly applicable to zinc sulfide phosphors used in electroluminescent displays that employ thick dielectric layers subject to high processing temperatures to form and activate the phosphor films.