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:
Jul. 09, 2013
Filed:
Feb. 15, 2011
Toshiaki Onimaru, Ibaraki, JP;
Hiroshi Sakurai, Takatsuki, JP;
Yo Hibino, Ibaraki, JP;
Toshiyuki Akiyama, Ibaraki, JP;
Yoichi Shintani, Ibaraki, JP;
Toshiaki Onimaru, Ibaraki, JP;
Hiroshi Sakurai, Takatsuki, JP;
Yo Hibino, Ibaraki, JP;
Toshiyuki Akiyama, Ibaraki, JP;
Yoichi Shintani, Ibaraki, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A forming method of a protective film made of oxide containing any one of calcium oxide (CaO), strontium oxide (SrO) and barium oxide (BaO) and having a higher band gap than that of magnesium oxide (MgO) (higher than 7.9 eV) is provided. By adjusting a time constant of a protective film to a predetermined value or larger, the voltage drop time is adjusted so as to be usable for a plasma display panel. At this time, the time constant τ(=C×R) defined by the discharge capacitance C and the protective film resistance R is referenced.