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:
Apr. 08, 2014
Filed:
Nov. 28, 2008
Minoru Hasegawa, Fujisawa, JP;
Shinya Fukuta, Yokohama, JP;
Keiichi Betsui, Yokohama, JP;
Yasunobu Hashimoto, Kawasaki, JP;
Minoru Hasegawa, Fujisawa, JP;
Shinya Fukuta, Yokohama, JP;
Keiichi Betsui, Yokohama, JP;
Yasunobu Hashimoto, Kawasaki, JP;
Hitachi Consumer Electronics Co., Ltd., Tokyo, JP;
Abstract
A protective film () having a high secondary-emission coefficient is formed on a dielectric layer () so as to lower the discharge voltage of a plasma display panel. When the protective film () is exposed to the air, it will transform or become cloudy, or the secondary-emission coefficient will lower. To prevent this problem, an inert film () is formed on the surface of the protective film (). As the inert film (), a film of a metal oxide such as SiOand a film of a metal such as Tb are simultaneously formed. Thus, an inert film () excellent in barrier property against oxygen and water in the air and enabling easy sputtering from near the discharge electrode at the aging step can be obtained. With this, a plasma display panel exhibiting a low discharge voltage can be realized.