Patents by Inventor Yasue Sato
Yasue Sato has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7511425Abstract: In an image display apparatus composed of a vacuum container having an electron source composed of multiple electron-emitting devices and a phosphor film that is irradiated with an electron from the electron source to emit light for display, an ion pump for exhausting the vacuum container through a communicating path by virtue of an action of a magnetism forming portion is arranged. A magnetic shielding member is arranged in a space where the ion pump and the electron-emitting devices are in communication with each other, whereby an influence of a magnetic field generated by the magnetism forming portion on the trajectory of an electron emitted from any one of the electron-emitting devices and display luminance unevenness incidental to the influence are removed.Type: GrantFiled: August 25, 2005Date of Patent: March 31, 2009Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Hisanori Tsuda, Masaru Kamio, Ihachiro Gofuku, Yasue Sato, Yoshiyuki Shimada, Hiromasa Mitani, Kazuyuki Seino, Takashi Nishimura
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Patent number: 7446467Abstract: An image display apparatus for forming an image in an image displaying region provided with a vacuum chamber having an electron source substrate and an image forming substrate has an ion pump for evacuating the vacuum chamber by an action of a magnet-filed-forming portion through an aperture portion formed in the electron source substrate or an image displaying substrate, wherein the magnet-filed-forming portion is arranged so that a shadow formed by perpendicularly projecting the magnet-filed-forming portion onto the electron source substrate or the image forming substrate can be located outside the image displaying region.Type: GrantFiled: August 15, 2005Date of Patent: November 4, 2008Assignee: Canon Kabushiki KaishaInventors: Hisanori Tsuda, Masaru Kamio, Ihachiro Gofuku, Yasue Sato
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Patent number: 7439661Abstract: It is an object of the present invention to provide an image display apparatus in which the change over time of its electron source characteristics is small, and in which uneven brightness and color shift of an image is almost unnoticeable. To achieve this object, the present invention is directed to an image display apparatus containing an electron source substrate having a plurality of electron-emitting devices arrayed thereon, an image forming substrate arranged so as to face the electron source substrate and having a phosphor film and an anode electrode film, and magnetic field generating means, wherein a component parallel to the electron source substrate of a magnetic flux density of a magnetic field generated by the magnetic field generating means is not greater than 0.01 Tesla at any location of the electron-emitting devices.Type: GrantFiled: August 18, 2005Date of Patent: October 21, 2008Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Yasue Sato, Masaru Kamio, Ihachiro Gofuku, Hisanori Tsuda, Tomoko Narusawa, Yoshiyuki Shimada, Hiromasa Mitani, Kazuyuki Seino, Takashi Nishimura
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Publication number: 20080174227Abstract: In order to be capable of high-precision gas measurement and evaluating influences of a gas on an electron source, and to predict a life of an image display device with high precision for a short period of time, there is provided a sealed container which is capable of maintaining an inside thereof to a lower pressure than an atmospheric pressure, and is used for an image display device including in the inside: a phosphor; an electron-emitting device for causing the phosphor to emit light; and a getter, the sealed container including an exhaust pipe having a breakable vacuum isolating member on at least one side of the image display device.Type: ApplicationFiled: August 6, 2007Publication date: July 24, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Masaru Kamio, Yasue Sato, Kazuyuki Seino, Hiromasa Mitani
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Patent number: 7326097Abstract: A method and an apparatus of manufacturing an image displaying apparatus including an electron source substrate and a phosphor substrate. The electron source substrate is provided with an electron emitting element formed by covering with a container and by applying a voltage to an electronic conductor on the substrate. While, the phosphor substrate is provided with a phosphor thereon. The substrates are subjected to a getter processing and to a seal bonding process under a vacuum condition through a processing chamber, to complete an image forming apparatus. An improvement resides in miniaturizing and simplifying operation, and in greater manufacture speed and mass production.Type: GrantFiled: August 9, 2004Date of Patent: February 5, 2008Assignee: Canon Kabushiki KaishaInventors: Ichiro Nomura, Kohei Nakata, Tetsuya Kaneko, Toshihiko Miyazaki, Yasue Sato, Toshikazu Ohnishi
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Patent number: 7308819Abstract: A gas measuring method performs a gas measurement inside a sealed container provided with a pair of plates and an exhaust pipe having a breakable vacuum isolating member on at least one of the plates. The method includes the steps of connecting the sealed container to a gas measuring apparatus through the exhaust pipe, and breaking the breakable vacuum isolating member.Type: GrantFiled: May 4, 2006Date of Patent: December 18, 2007Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Masaru Kamio, Yasue Sato, Kazuyuki Seino, Hiromasa Mitani
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Patent number: 7301269Abstract: Provided is an image display apparatus, including: a vacuum container which includes an electron source and an anode electrode opposed to the electron source; and an ion pump arranged so as to communicate through the vacuum container, in which: an ion pump container is composed of a non-electroconductive material; and an electroconductive film is formed on an external surface of the vacuum container on a side on which the ion pump container is mounted or on an internal surface of the ion pump container. The image display apparatus achieves: a reduction in weight of the ion pump; an improvement in compatibility to the vacuum container; and the prevention of an adverse effect of discharge inside the ion pump on image display.Type: GrantFiled: August 25, 2005Date of Patent: November 27, 2007Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Ihachiro Gofuku, Masaru Kamio, Hisanori Tsuda, Yasue Sato, Yoshiyuki Shimada, Hiromasa Mitani, Kazuyuki Seino, Takashi Nishimura
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Patent number: 7279846Abstract: Provided is an image display apparatus including: a vacuum container having an electron source enclosed therein for displaying an image; an ion pump communicating with the vacuum container for discharging air therefrom and decreasing pressure therein; and a resistor connected in series with the ion pump with respect to a power supply for driving the ion pump. Even if internal resistance of the ion pump undergoes order-of-magnitude changes according to its operating state, current consumption can be suppressed and the ion pump can be driven efficiently.Type: GrantFiled: August 17, 2005Date of Patent: October 9, 2007Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Ihachiro Gofuku, Masaru Kamio, Hisanori Tsuda, Yasue Sato, Yoshiyuki Shimada, Hiromasa Mitani, Kazuyuki Seino, Takashi Nishimura
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Patent number: 7189427Abstract: This invention provides an electron source manufacturing apparatus which can be easily downsized and operated. The electron source manufacturing apparatus includes a support member for supporting a substrate (10) having a conductor (11), a vessel (12) which has a gas inlet port (15) and a gas exhaust port (16) and covers a partial region of the surface of the substrate (10); a gas inlet unit (24) connected to the gas inlet port (15) to introduce gas into the vessel, an exhaust unit (26) connected to the gas exhaust port to evacuate the interior of the vessel, and a voltage application unit (32) for applying a voltage to the conductor.Type: GrantFiled: February 10, 2004Date of Patent: March 13, 2007Assignee: Canon Kabushiki KaishaInventors: Toshihiko Takeda, Masaru Kamio, Masataka Yamashita, Yasue Sato, Hitoshi Oda, Keisuke Yamamoto, Miki Tamura, Hideshi Kawasaki, Kazuhiro Jindai
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Publication number: 20060208626Abstract: In order to be capable of high-precision gas measurement and evaluating influences of a gas on an electron source, and to predict a life of an image display device with high precision for a short period of time, there is provided a sealed container which is capable of maintaining an inside thereof to a lower pressure than an atmospheric pressure, and is used for an image display device including in the inside: a phosphor; an electron-emitting device for causing the phosphor to emit light; and a getter, the sealed container including an exhaust pipe having a breakable vacuum isolating member on at least one side of the image display device.Type: ApplicationFiled: May 4, 2006Publication date: September 21, 2006Applicants: CANON KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventors: Masaru Kamio, Yasue Sato, Kazuyuki Seino, Hiromasa Mitani
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Patent number: 7108573Abstract: In order to be capable of high-precision gas measurement and evaluating influences of a gas on an electron source, and to predict a life of an image display device with high precision for a short period of time, there is provided a sealed container which is capable of maintaining an inside thereof to a lower pressure than an atmospheric pressure, and is used for an image display device including in the inside: a phosphor; an electron-emitting device for causing the phosphor to emit light; and a getter, the sealed container including an exhaust pipe having a breakable vacuum isolating member on at least one side of the image display device.Type: GrantFiled: October 14, 2003Date of Patent: September 19, 2006Assignees: Canon Kabushiki Kaisha, Kabushiki Kaisha ToshibaInventors: Masaru Kamio, Yasue Sato, Kazuyuki Seino, Hiromasa Mitani
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Publication number: 20060055637Abstract: Provided is an image display apparatus including: a vacuum container having an electron source enclosed therein for displaying an image; an ion pump communicating with the vacuum container for discharging air therefrom and decreasing pressure therein; and a resistor connected in series with the ion pump with respect to a power supply for driving the ion pump. Even if internal resistance of the ion pump undergoes order-of-magnitude changes according to its operating state, current consumption can be suppressed and the ion pump can be driven efficiently.Type: ApplicationFiled: August 17, 2005Publication date: March 16, 2006Applicants: CANON KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventors: Ihachiro Gofuku, Masaru Kamio, Hisanori Tsuda, Yasue Sato, Yoshiyuki Shimada, Hiromasa Mitani, Kazuyuki Seino, Takashi Nishimura
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Publication number: 20060049734Abstract: It is an object of the present invention to provide an image display apparatus in which the change over time of its electron source characteristics is small, and in which uneven brightness and color shift of an image is almost unnoticeable. To achieve this object, the present invention is directed to an image display apparatus containing an electron source substrate having a plurality of electron-emitting devices arrayed thereon, an image forming substrate arranged so as to face the electron source substrate and having a phosphor film and an anode electrode film, and magnetic field generating means, wherein a component parallel to the electron source substrate of a magnetic flux density of a magnetic field generated by the magnetic field generating means is not greater than 0.01 Tesla at any location of the electron-emitting devices.Type: ApplicationFiled: August 18, 2005Publication date: March 9, 2006Applicants: CANON KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventors: Yasue Sato, Masaru Kamio, Ihachiro Gofuku, Hisanori Tsuda, Tomoko Narusawa, Yoshiyuki Shimada, Hiromasa Mitani, Kazuyuki Seino, Takashi Nishimura
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Publication number: 20060043866Abstract: In an image display apparatus composed of a vacuum container having an electron source composed of multiple electron-emitting devices and a phosphor film that is irradiated with an electron from the electron source to emit light for display, an ion pump for exhausting the vacuum container through a communicating path by virtue of an action of a magnetism forming portion is arranged. A magnetic shielding member is arranged in a space where the ion pump and the electron-emitting devices are in communication with each other, whereby an influence of a magnetic field generated by the magnetism forming portion on the trajectory of an electron emitted from any one of the electron-emitting devices and display luminance unevenness incidental to the influence are removed.Type: ApplicationFiled: August 25, 2005Publication date: March 2, 2006Applicants: CANON KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBAInventors: Hisanori Tsuda, Masaru Kamio, Ihachiro Gofuku, Yasue Sato, Yoshiyuki Shimada, Hiromasa Mitani, Kazuyuki Seino, Takashi Nishimura
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Publication number: 20060043865Abstract: Provided is an image display apparatus, including: a vacuum container which includes an electron source and an anode electrode opposed to the electron source; and an ion pump arranged so as to communicate through the vacuum container, in which: an ion pump container is composed of a non-electroconductive material; and an electroconductive film is formed on an external surface of the vacuum container on a side on which the ion pump container is mounted or on an internal surface of the ion pump container. The image display apparatus achieves: a reduction in weight of the ion pump; an improvement in compatibility to the vacuum container; and the prevention of an adverse effect of discharge inside the ion pump on image display.Type: ApplicationFiled: August 25, 2005Publication date: March 2, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Ihachiro Gofuku, Masaru Kamio, Hisanori Tsuda, Yasue Sato, Yoshiyuki Shimada, Hiromasa Mitani, Kazuyuki Seino, Takashi Nishimura
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Publication number: 20060043870Abstract: An image display apparatus for forming an image in an image displaying region provided with a vacuum chamber having an electron source substrate and an image forming substrate has an ion pump for evacuating the vacuum chamber by an action of a magnet-filed-forming portion through an aperture portion formed in the electron source substrate or an image displaying substrate, wherein the magnet-filed-forming portion is arranged so that a shadow formed by perpendicularly projecting the magnet-filed-forming portion onto the electron source substrate or the image forming substrate can be located outside the image displaying region.Type: ApplicationFiled: August 15, 2005Publication date: March 2, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Hisanori Tsuda, Masaru Kamio, Ihachiro Gofuku, Yasue Sato
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Publication number: 20060043871Abstract: An image display apparatus is provided with a vacuum chamber consisting of an electron source substrate and an image display substrate, and an ion pump which is attached to an electron-emitting substrate or the image display substrate and exhausts air from the vacuum chamber by the action of a magnet, wherein the magnet is attached and fixed to the substrate to which the ion pump has been attached. Thereby, the image display apparatus prevents the magnet from applying an excessive force to the ion pump by its weight, and acquires a stable structure without causing a vacuum leak.Type: ApplicationFiled: August 17, 2005Publication date: March 2, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Masaru Kamio, Ihachiro Gofuku, Hisanori Tsuda, Yasue Sato
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Patent number: 6867537Abstract: An image-forming apparatus has a rear plate including electron-emitting devices formed thereon, a face plate including a fluorescent film formed thereon and being disposed to face the rear plate, flat plate spacers disposed between the rear plate and the face plate, and an outer frame surrounding peripheral edges of the rear plate and the face plate. Electrons emitted from the electron-emitting devices are irradiated to the fluorescent film to thereby display an image under condition where an inner space of a container constructed by the rear plate, the face plate and the outer frame is evacuated through a vent tube into a depressurized state. The vent tube is attached to a side of the outer frame that is positioned across an imaginary extension of the flat-plate spacer in the longitudinal direction thereof, or to the face plate or the rear plate in the vicinity of that side of the outer frame.Type: GrantFiled: July 28, 1999Date of Patent: March 15, 2005Assignee: Canon Kabushiki KaishaInventors: Yasue Sato, Shinichi Kawate, Kazuyuki Ueda
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Patent number: 6848961Abstract: A method and an apparatus of manufacturing an image displaying apparatus having an electron source substrate and a phosphor substrate. The electron source substrate is provided with an electron emitting element formed by covering with a container and by applying a voltage to an electronic conductor on the substrate. While, the phosphor substrate is provided with a phosphor thereon. The substrates are subjected to a getter processing and to a seal bonding process under a vacuum condition through a processing chamber, to complete an image forming apparatus. An improvement resides in miniaturizing and simplifying operation, and in greater manufacture speed and mass production.Type: GrantFiled: March 16, 2001Date of Patent: February 1, 2005Assignee: Canon Kabushiki KaishaInventors: Ichiro Nomura, Kohei Nakata, Tetsuya Kaneko, Toshihiko Miyazaki, Yasue Sato, Toshikazu Ohnishi
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Publication number: 20050017634Abstract: In order to be capable of high-precision gas measurement and evaluating influences of a gas on an electron source, and to predict a life of an image display device with high precision for a short period of time, there is provided a sealed container which is capable of maintaining an inside thereof to a lower pressure than an atmospheric pressure, and is used for an image display device including in the inside: a phosphor; an electron-emitting device for causing the phosphor to emit light; and a getter, the sealed container including an exhaust pipe having a breakable vacuum isolating member on at least one side of the image display device.Type: ApplicationFiled: October 14, 2003Publication date: January 27, 2005Applicant: Canon Kabushiki KaishaInventors: Masaru Kamio, Yasue Sato, Kazuyuki Seino, Hiromasa Mitani