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:
Oct. 10, 2000
Filed:
Jan. 28, 1999
Do Soon Park, Daejeon, KR;
Ha Kyun Jung, Daejeon, KR;
Abstract
The present invention relates to a novel phosphor of green luminescence and more particularly, to the phosphor of green luminescence containing Tb(terbium) as an activator and a perovskite-structure(CaSnO.sub.3) as a host compound, which may emit a luminescent spectrum in the visible range, when excited by electron beam. Since the phosphor of green luminescence of this invention has better emission intensity than the conventional phosphors, it has been widely applicable to the display industry including an electronic display such as cathode-ray tube and field emission display, in spite of the fact the use of Tb, a high-priced rare earth element, is minimized without any sulfur(S) in its chemical composition.