Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Matsushita Electric Co., Ltd.

Masaki Aoki Et Al.

Yasuhisa Ishikura

Masaki Aoki

Yutaka Nishimura

Katsuyoshi Yamashita

Eiji Fujii

Hideo Torii

Ryuichi Murai

Hiroyuki Kawamura

Mitsuhiro Ohtani

Hiroyoshi Tanaka

Takashi Inami

Hiroyuki Kado

Takaaki Tanaka

Shinya Fujiwara

Naoki Kosugi

Kinzo Nonomura

Kanako Miyashita

Fumio Yamazaki

Masahide Yamauchi

Yasuyuki Akata

Shigeo Haruki

Utaro Miyagawa

Syunsuke Nishimura

Yasuko Nishimura

Emi Kawahara

The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760 Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectric glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation. The protecting layer, which may be formed by using thermal Chemical Vapor Deposition (CVD) method, plasma enhanced CVD method, or a vapor deposition method with irradiation of ion or electron beam, will have a high sputtering resistance and effectively protect the dielectrics glass layer. Such a protecting layer contributes to the improvement of the panel life.

Method of producing plasma display panel with protective layer of an alkaline earth oxide

A PDP operates with high luminous efficiency and reproduces colors faithfully. When sealing the PDP, a sealant layer ( ) is formed around the facing main surfaces of the front panel ( ) and the back panel ( ). Protrusions ( ) and depressions ( ) are formed in parts of the sealant layer ( ) to produce gaps ( ) at the periphery of the PDP. The heating performed to soften the sealant layer ( ) is conducted in a dry gas atmosphere. As a result, moisture passes from the inner space of the PDP through the gaps ( ) and out of the PDP, thereby reducing the heat deterioration in the blue phosphor layer ( ).

Manufacturing method for a plasma display panel with superior luminescence

The object of the present invention is to provide a high-intensity, reliable plasma display panel even when the cell structure is fine by resolving the problems such as a low visible light transmittance and low voltage endurance of a dielectric glass layer. The object is realized by forming the dielectric glass layer in the manner given below. A glass paste including a glass powder is applied on the front glass substrate or the back glass substrate, according to a screen printing method, a die coating method, a spray coating method, a spin coating method, or a blade coating method, on each of which electrodes have been formed, and the glass powder in the applied glass paste is fired. The average particle diameter of the glass powder is 0.1 to 1.5 &mgr;m and the maximum particle diameter is equal to or smaller than three times the average particle diameter.

Manufacturing method of plasma display panel that includes adielectric glass layer having small particle sizes

Method of producing plasma display panel with protective layer of an

The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectrics glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation. The protecting layer, which may be formed by using thermal Chemical Vapor Deposition (CVD) method, plasma enhanced CVD method, or a vapor deposition method with irradiation of ion or electron beam, will have a high sputtering resistance and effectively protect the dielectrics glass layer. Such a protecting layer contributes to the improvement of the panel life.

Plasma display panel with protective layer of an alkaline earth oxide

The present invention concerns a cathode ray display tube in which the layers of a scattered electrons suppressing material are formed on the surface of a metal back layer on a phosphor layer and the inner surface of a funnel part. Each of the scattered electrons suppressing material layers on the surface of the metal back layer and on the inner surface of the funnel part is formed with an amount per unit area within specific ranges. The scattered electrons suppressing material layer is provided to form a laminated layer which is composed of lamina shaped graphite particles with a diameter which is ten times or more as large as a thickness and an average particle size in terms of spherical volume not more than 2 .mu.m. The scattered electrons suppressing material layers reduce unnecessary light emission due to scattered electrons and improve the contrast of a display image. A projection display system providing a display image with high contrast can be constituted by using the cathode display tubes.

Monochromatic cathode ray tube having scattered electron suppressing

An electron beam display device which has high contrast and excellent image quality, by eliminating halation due to re-collision of the electrons in the fluorescent element area. The electron beam display device includes a face glass on which an image is formed, a cathode for emitting electron beams, a fluorescent element layer on the face glass and facing the cathode, with which layer electron beams collide to emit light for forming an image on the face glass, an aluminum layer as anode on the fluorescent element layer, and a carbon layer on the aluminum layer, having a thickness sufficient to prevent electrons, reflected in the aluminum anode layer by collision of electron beams with the aluminum anode layer, from coming back into the face glass.

Electron beam display device and production thereof

Growing community of inventors

Katano, Japan

Yasuhisa Ishikura