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:
Mar. 31, 2009
Filed:
Oct. 10, 2003
Hikaru Nishitani, Nara, JP;
Yukihiro Morita, Hirakata, JP;
Masatoshi Kitagawa, Hirakata, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A plasma display panel having a dielectric protection layer () including MgO and phosphorlayers (R,G,B) for red, green, and blue respectively wherein none of the phosphor layers contain any member of the group consisting of Group IV elements, transition metals, alkali metals, and alkaline earth metals, or wherein all the phosphor layers each contain a specific amount of one or more members of the group consisting of Group IV group elements, transition metals, alkali metals and alkaline earth metals. In such a plasma display panel, changes over the course of time in the impedance of the dielectric protection layer () is suppressed, and the phosphor layers are uniform with respect to the directional characteristics of the changes of the impedances, which results in suppression of occurrence of black noise.