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. 02, 2003
Filed:
May. 30, 2001
Yoshihiko Yano, Chuo-ku, JP;
Tomoyuki Oike, Chuo-ku, JP;
TDK Corporation, Tokyo, JP;
Abstract
The invention has for its object to provide a phosphor thin film which can dispense with any filter and has satisfactory color purity, is particularly well fit for RGB full-color Els, and simplifies a full-color EL panel production process, thereby providing a phosphor thin film which is less susceptible to luminance variations and can be produced in improved yields and so at lower costs and its fabrication process as well as an EL panel. This is achieved by the provision of a phosphor thin film comprising a matrix material containing as a main component an alkali earth aluminate that is an oxide, with sulfur added to the matrix material, and further containing an element that provides a luminescentce center.