Electric lamp and discharge devices – With gas or vapor – Three or more electrode discharge device
Reexamination Certificate
2011-04-26
2011-04-26
Won, Bumsuk (Department: 2889)
Electric lamp and discharge devices
With gas or vapor
Three or more electrode discharge device
C313S586000
Reexamination Certificate
active
07932676
ABSTRACT:
The present invention provides a plasma display panel (PDP) with a protective film improved so as to achieve a lower discharge starting voltage. A surface portion of the protective film16substantially is composed of magnesium (Mg), aluminum (Al), nitrogen (N), and oxygen (O). The protective film16is formed so that in the surface portion of the protective film16, a ratio of the number of atoms of the aluminum to a total of the number of atoms of the magnesium and the number of atoms of the aluminum is at least 2.1% but not more than 66.5%, a ratio of the number of atoms of the nitrogen to a total of the number of atoms of the nitrogen and the number of atoms of the oxygen is at least 1.2% but not more than 17.2%, and a ratio of the total of the number of atoms of the nitrogen and the number of atoms of the oxygen to the total of the number of atoms of the magnesium and the number of atoms of the aluminum is at least 1.0 but not more than 1.35.
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Fukui Yusuke
Honda Yosuke
Nishitani Mikihiko
Okafuji Michiko
Sakai Masahiro
Hamre Schumann Mueller & Larson P.C.
Panasonic Corporation
Won Bumsuk
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