Kyocera Corporation

Masashi Kato

Kazuo Watada

Hisamitsu Sakai

Kiyohiro Sakasegawa

Koji Hamada

Toshikazu Kishino

Akihiko Takahashi

Kouji Hamada

Yasuhito Muramoto

Junji Hatanaka

Yasuhiko Nishioka

Tetsuya Maeda

Spacers used in a picture display device are formed of a sintered product having a structure in which at least one kind of metal selected from the group consisting of Si, Zn, Al, Sn, Cu and Mg is dispersed in a glass. In the picture display device using spacers, therefore, the spacers are effectively prevented from being electrically charged and, besides, trouble such as distortion in the displayed picture caused by the electric charge in the spacers is effectively prevented, too. In producing the spacers by firing, further, the volume expands due to the oxidation of the metal component, whereby shrinkage due to firing is effectively relaxed, making it possible to produce the spacers maintaining a high dimensional precision. Besides, the spacers are effectively prevented from being deformed by the shrinkage caused by firing.

Spacers used for picture display devices and a method of producing the same

In a plasma display device comprising a pair of opposing insulating substrates and a plurality of light emitting cells formed from partition walls which divide the space between the insulating substrates while a plurality of electrodes are formed in the light emitting cells and the inner space is filled with a discharge gas and plasma being generated by applying a voltage selectively between the electrodes so that the fluorescent substances formed on the inner walls of the light emitting cells emit light as light emitting elements, wherein sizes of the light emitting cells of different colors are made different according to the luminance of the fluorescent substance of the corresponding color. That is, cells which emit light of a color of luminance lower than the other cells are made with larger opening to obtain equally high luminance for all the three primary colors, thereby mitigating the deviation in the luminance among the fluorescent substances and achieving full-color display of high image quality with high color purity.

Plasma display device

A plasma display substrate comprising a rear plate and a plurality of partitions for forming display cells between every two adjacent partitions on one of the surfaces of the rear plate, wherein the partitions are molded independently of the rear plate with the mixture of ceramic or glass powder and a binder inclusive of organic additives and solvents are formed in a desired shape and a desired disposition on one of the surfaces of the rear plate made of ceramics or glass, and integrally joined to the rear plate. According to the substrate, the display cells have improved dimensional accuracy, particularly, the partitions having highly accurate flat side surfaces with no deformation and having a predetermined height can be formed easily. This disclosure also provides a method of producing the same.

Plasma display substrate and a production method thereof

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Kokubu, Japan

Masashi Kato