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AssigneeHitachi Consumer Electronics Co., Ltd.
InventorsMinoru Hasegawa, Shinya Fukuta, Keiichi Betsui, Yasunobu Hashimoto
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A protective film (6) having a high secondary-emission coefficient is formed on a dielectric layer (5) so as to lower the discharge voltage of a plasma display panel. When the protective film (6) 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 (60) is formed on the surface of the protective film (6). As the inert film (60), a film of a metal oxide such as SiO2 and a film of a metal such as Tb are simultaneously formed. Thus, an inert film (60) 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.
A plasma display panel comprising:
A method of manufacturing a plasma display panel including a front substrate on which a dielectric layer is formed to cover first discharge electrodes and second discharge electrodes, a protective film is formed to cover the dielectric layer and an inert film is formed on the protective film, and a back substrate on which a dielectric layer is formed to cover address electrodes and partition walls are formed on the dielectric layer, the front and back substrates being sealed together by a sealing material formed along a periphery, the method comprising the steps of:
Dependencies are inferred from the claim text.