Panasonic Corporation

Masashi Gotou

Jun Hashimoto

Takuji Tsujita

Eiji Takeda

Yasuyuki Noguchi

Ryuichi Murai

Hiroyuki Kado

Takayuki Shimamura

Yukihiro Morita

Kyohei Yoshino

A plasma display panel has high definition, high luminance, and low power consumption. In the plasma display panel, the front panel is provided thereon with display electrodes, a dielectric layer, and a protective layer. The display electrodes are formed on the front glass substrate. The dielectric layer coats the display electrodes, and the protective layer is formed on the dielectric layer. The rear panel is provided thereon with address electrodes and barrier ribs for partitioning the discharge space in the direction crossing to the display electrodes. The front and rear panels are opposed to each other with a discharge space therebetween filled with a discharge gas. The protective layer on the dielectric layer includes an underlying film, and aggregated particles adhered on the underlying film, the aggregated particles being formed by aggregating crystal grains of magnesium oxide. The underlying film contains metal oxides composed of at least two oxides selected from magnesium oxide, calcium oxide, strontium oxide, and barium oxide. According to an X-ray diffraction analysis of the surface of the underlying film, in a specific plane direction, the metal oxides have a diffraction angle peak between the minimum and maximum diffraction angles of simple substances of the oxides composing the metal oxides.

Plasma display panel having high luminance display and capable of being driven with low voltage

A method for producing a plasma display panel having a base layer including metallic oxides and agglomerated particles dispersed on the base layer includes the following steps of: forming the base layer on the dielectric layer; spreading an organic solvent in which the agglomerated particles are dispersed on the base layer to form a coating layer thereon; drying the coating layer under a reduced pressure to form an organic solvent coating film on at least the base layer; disposing the rear plate and the front plate on which the coating film is formed so as to face each other; heating the front plate and the rear plate facing each other to evaporate the coating film, dispersing the agglomerated particles on the base layer, and removing components of the evaporated coating film from the discharge space; and sealing the rear plate and the front plate from which the coating film is evaporated to each other.

Method for producing plasma display panel

A PDP includes a front panel including display electrode () formed on glass substrate (), dielectric layer () covering display electrode (), and protective layer () formed on dielectric layer (); and a rear panel opposing to the front panel to form a discharge space filled with discharge gas, and including an address electrode formed along a direction intersecting with display electrode (), and a barrier rib partitioning the discharge space, wherein protective layer () is formed of a metal oxide made of magnesium oxide and calcium oxide and contains aluminum, and a diffraction angle where a peak of the metal oxide occurs exists between a diffraction angle where a peak of the magnesium oxide occurs and a diffraction angle where a peak of the calcium oxide occurs in an X-ray diffraction analysis on a surface of protective layer ().

Plasma display panel having a plurality of aggregated particles attached to a protective layer at a face confronting a discharge space formed between a first substrate and a second substrate

A plasma display panel (PDP), which is capable of performing a display with a high brightness and having a low power consumption, includes a front panel having display electrodes formed, a dielectric layer covering the display electrodes, and a protective layer formed on the dielectric layer. Further, the PDP includes rear panel having address electrodes formed along a direction intersecting the display electrodes, and barrier ribs. The front and rear panels form, therebetween, a discharge space portioned by the barrier ribs and filled with discharge gas. A protective layer is formed of a metal oxide of MgO and CaO, such that an X-ray diffraction analysis on a surface of the protective layer indicates that the metal oxide has a peak between a diffraction angle where a peak of MgO occurs and a diffraction angle where a peak of CaO occurs along an identical orientation of the MgO peak.

Plasma display panel capable of displaying a video having high brightness while requiring a low driving voltage

A high definition plasma display panel which can display a video of a higher brightness and yet can be driven at a low power consumption is realized. To this end, a plasma display panel includes front panel including display electrode formed on glass substrate, dielectric layercovering display electrode, and protective layer formed on dielectric layer; and a rear panel opposing to front panel to form a discharge space filled with discharge gas, and including an address electrode formed along a direction intersecting with display electrode, and a barrier rib partitioning the discharge space. Protective layer is formed of a metal oxide made of magnesium oxide and calcium oxide and contains silicon. In an X-ray diffraction analysis on a surface of protective layer, a diffraction angle where a peak of the metal oxide occurs exists between a diffraction angle where a peak of the magnesium oxide occurs and a diffraction angle where a peak of the calcium oxide occurs.

Low power consumption plasma display panel

In a panel unit, a discharge gas is filled into a discharge space. A protective layeris provided in a partial region (a front panelside) facing the inner space, and a phosphor layeris provided in a counter region (a back panelside) which holds the discharge space. The discharge gas is set at a total pressure of not less than 1.50&#xd7;10[Pa] and not more than 6.66&#xd7;10[Pa], and comprises an Xe gas as a first gas component and an Ar gas as a second gas component and is free from an Ne gas, provided that the Ne gas may be contained in the discharge gas at a partial pressure ratio of not more than 0.5[%] based on the total pressure.

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Osaka, Japan

Masashi Gotou