With Start Up, Flashing Or Aging Patents (Class 445/6)
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Patent number: 7040943Abstract: A method for aging an organic electroluminescence display element where the integration value with respect to an applied voltage and a voltage application time in a reverse direction is at least twice as much as in a forward direction.Type: GrantFiled: November 10, 2003Date of Patent: May 9, 2006Assignee: OPTREX CorporationInventors: Akira Takahashi, Naoki Kato, Shinji Kobune
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Patent number: 7037162Abstract: An optical fiber code holding structure, includes: an optical adapter and an optical fiber code holding member. An optical connector of an optical fiber is connected to an optical adapter. The optical connector is attached to an end of an optical fiber code of the optical fiber. The optical fiber code holding member has a light shielding device shielding lights emitted from the optical adapter and a holding device holding the optical fiber code.Type: GrantFiled: May 29, 2002Date of Patent: May 2, 2006Assignee: NEC CorporationInventors: Shintaro Fujioka, Hiroshi Ootani, Yoshinori Nakamura, Hisakazu Meguro
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Patent number: 7034449Abstract: An image display apparatus is provided, in which the generation of discharge can be suppressed and a preferable display image can be obtained. A method of manufacturing an image display apparatus having an airtight container including a rear plate having a plurality of electron-emitting devices and a face plate which is located opposite to the rear plate and has a phosphor and an electroconductive film, includes the steps of, (A) disposing the rear plate having the plurality of electron-emitting devices and the face plate having the phosphor and the electroconductive film such that the rear plate and the face plate are opposite to each other and arranging a plurality of plate shaped spacers between the rear plate and the face plate to assemble the airtight container, and (B) applying an electric field between the rear plate and the face plate in a state that the airtight container is slanted such that a longitudinal direction of the plate-shaped spacers is not perpendicular to a gravitational direction.Type: GrantFiled: July 23, 2004Date of Patent: April 25, 2006Assignee: Canon Kabushiki KaishaInventors: Norihiro Suzuki, Yoichi Ando
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Patent number: 7021981Abstract: A method for manufacturing an electron emission element comprising, between its electrodes, a conductive film having an electron emission section. The method comprising the steps of forming a gap in the conductive film located between the electrodes, and applying a voltage between the electrodes in an atmosphere that has an aromatic compound with a polarity or a polar group and in which the partial pressure ratio of water to the aromatic compound is 100 or less.Type: GrantFiled: December 13, 2001Date of Patent: April 4, 2006Assignee: Canon Kabushiki KaishaInventors: Toshikazu Onishi, Yoshikazu Banno, Michiyo Nishimura, Toshihiko Takeda, Keisuke Yamamoto, Tomoko Maruyama
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Patent number: 6986694Abstract: In a method for removing impurities of a plasma display panel capable of shortening panel aging time by removing impurities of an upper and a lower substrates under vacuum gas circumstances, the method includes fabricating an upper substrate and a lower substrate; removing impurities of the upper and lower substrates by using at least one of a plasma-cleaning process in which a discharge is performed under vacuum gas circumstances and a heating process in which heating is performed; assembling the impurities removed upper and lower substrates; exhausting gas inside the assembled upper and lower substrates and injecting a discharge gas; and aging the discharge gas injected-plasma display panel.Type: GrantFiled: December 31, 2002Date of Patent: January 17, 2006Assignee: LG Electronics Inc.Inventor: Jae-Sang Chung
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Patent number: 6984159Abstract: A PDP with superior light-emitting characteristics and color reproduction is achieved by setting the chromaticity coordinate y (the CIE color specification) of light to 0.08 or less, more preferably to 0.07 or less, or 0.06 or less, enabling the color temperature of light to be set to 7,000 K or more, and further to 8,000 K or more, 9,000 K or more, or 10,000 K or more. The PDP is manufactured by a method in which the processes for heating the fluorescent substances such as the fluorescent substance baking, sealing material temporary baking, bonding, and exhausting processes are performed in the dry gas atmosphere, or in an atmosphere in which a dry gas is circulated at a pressure lower than the atmospheric pressure.Type: GrantFiled: June 15, 1999Date of Patent: January 10, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki, Kanako Miyashita
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Patent number: 6975286Abstract: A method for aging process in a PDP which is able to determine an ending time of the aging process comprises the steps of: starting the aging process by supplying source voltage to the PDP; and defining the aging ending time through change of current waveform by monitoring the change of current waveform applied to the panel, and thereby problems such that discharge characteristics of the panel become unstable due to the lack of aging time and phosphor is deteriorated and processing tack-time is reduced due to over-aging can be solved.Type: GrantFiled: October 3, 2002Date of Patent: December 13, 2005Assignee: LG Electronics Inc.Inventor: Byung Joon Rhee
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Patent number: 6960111Abstract: The present invention provides a method of manufacturing an electron source which exhibits improved uniformity of electron emitting devices and electron emission properties, and a method of manufacturing an image forming apparatus which exhibits an excellent display quality for a long time. An electron source having a plurality of electron emitting devices is manufactured by disposing a plurality of units, each comprising a pair of electrodes and a polymer film for connecting the electrodes, on a substrate, disposing a plurality of wirings for connection to the pair of electrodes of the plurality of each unit, and decreasing the resistances of all polymer films respectively of the units. A next step includes applying a voltage to films formed by decreasing the resistances of the polymer films, through the wirings, to form a gap in each of the films formed by decreasing the resistance of the polymer films.Type: GrantFiled: October 23, 2002Date of Patent: November 1, 2005Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Takegami, Hironobu Mizuno
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Patent number: 6945838Abstract: A knocking treatment method in a flat-type display device in which a first substrate provided with a first electrode and a second substrate provided with a second electrode are disposed with a vacuum space interposed between the first and second substrates and the first substrate and the second substrate are bonded to each other in their circumferential portions, the method comprising applying to the first electrode a pulse voltage V1 higher than a voltage to be applied to the second electrode to remove a projection present in the first electrode by field evaporation.Type: GrantFiled: January 24, 2002Date of Patent: September 20, 2005Assignee: Sony CorporationInventors: Morikazu Konishi, Koichi Iida
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Patent number: 6936972Abstract: An electron-emitting element is provided, including an electric field applying portion composed of a dielectric, a first electrode formed on one surface of the electric field applying portion, and a second electrode formed on the surface and forming a slit in cooperation with the first electrode, and which is formed on a substrate.Type: GrantFiled: November 1, 2002Date of Patent: August 30, 2005Assignee: NGK Insulators, Ltd.Inventors: Yukihisa Takeuchi, Tsutomu Nanataki, Iwao Ohwada, Tomoya Horiuchi
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Patent number: 6929522Abstract: In a method of manufacturing an electron source, a plurality of row wirings, a plurality of column wirings, and a plurality of pairs of conductive films arranged in a matrix by the plurality of row and column wirings, are formed on a substrate, each pair of conductive films being formed through a gap. After then, a row wiring is selected among the plurality of row wirings in the presence of an activation substance source, and a substantially same constant voltage is applied to each of a plurality of pairs of conductive films connected to the selected row wiring, while a predetermined voltage is applied to at least specific pairs of conductive films among a plurality of pairs of conductive films connected to unselected row wirings of the plurality of row wirings.Type: GrantFiled: December 21, 1999Date of Patent: August 16, 2005Assignee: Canon Kabushiki KaishaInventor: Tsuyoshi Takegami
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Patent number: 6930446Abstract: A method is provided for manufacturing a field emission device, the method including operating the field emission device in a pressure of at most about 10?8 Torr for a selected period of time to evacuate outgassed materials and sealing the field emission device.Type: GrantFiled: August 31, 1999Date of Patent: August 16, 2005Assignee: Micron Technology, Inc.Inventor: Behnam Moradi
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Patent number: 6908356Abstract: An electron-emitting device comprises a pair of oppositely disposed electrodes and an electroconductive film arranged between the electrodes and including a high resistance region. The high resistance region has a deposit containing carbon as a principal ingredient. The electron-emitting device can be used for an electron source of an image-forming apparatus of the flat panel type.Type: GrantFiled: July 10, 2003Date of Patent: June 21, 2005Assignee: Canon Kabushiki KaishaInventors: Toshikazu Ohnishi, Masato Yamanobe, Ichiro Nomura, Hidetoshi Suzuki, Yoshikazu Banno, Takeo Ono, Masanori Mitome
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Patent number: 6890231Abstract: An electron-emitting device comprises a pair of oppositely disposed electrodes and an electroconductive film arranged between the electrodes and including a high resistance region. The high resistance region has a deposit containing carbon as a principal ingredient. The electron-emitting device can be used for an electron source of an image-forming apparatus of the flat panel type.Type: GrantFiled: February 12, 2004Date of Patent: May 10, 2005Assignee: Canon Kabushiki KaishaInventors: Toshikazu Ohnishi, Masato Yamanobe, Ichiro Nomura, Hidetoshi Suzuki, Yoshikazu Banno, Takeo Ono, Masanori Mitome
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Patent number: 6890230Abstract: A field emission source comprising a first conductive region, a layer of nanotubes deposited on the first conductive region, and a second conductive region placed over and spaced from the nanotube coated first conductive region. After the device structure is fabricated, a laser beam is used to dislodge one end of the nanotube from the first conductive surface and an electric field is simultaneously applied to point the freed end of the nanotube at the second conductive region.Type: GrantFiled: August 28, 2001Date of Patent: May 10, 2005Assignee: Motorola, Inc.Inventors: Johann Trujillo, Albert Alec Talin, Kenneth Andrew Dean, Curtis D. Moyer
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Patent number: 6890229Abstract: A method for adjusting characteristics of an electron source having a plurality of electron-emitting devices, and a method for manufacturing the electron source include the step of applying a pulse of a voltage for adjustment to an electron-emitting device to be adjusted one or more times according to a characteristic of the electron-emitting device, wherein the voltage for adjustment is selected from a plurality of voltages having discrete values according to the characteristic of the electron-emitting device, and a number of applying times of the pulse is determined according to the characteristic of the electron-emitting device and the selected voltage.Type: GrantFiled: February 10, 2004Date of Patent: May 10, 2005Assignee: Canon Kabushiki KaishaInventors: Shuji Aoki, Takahiro Oguchi
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Patent number: 6878028Abstract: A method of fabricating an electron source constituted by a plurality of x-direction wirings arranged on a substrate, a plurality of y-direction wirings crossing the x-direction wirings, an insulating layer for electrically insulating the x- and y-direction wirings, and a plurality of conductive films each of which is electrically connected to the x- and y-direction wirings and has a gap, comprises a conductive film formation step of forming a plurality of conductive films to be connected to the pluralities of x- and y-direction wirings, a grouping step of dividing all the x-direction wirings into a plurality of groups, and a forming step of sequentially performing, for all the groups, a step of simultaneously applying a voltage to all wirings assigned to the same group, thereby forming gaps in the plurality of conductive films. The grouping step includes the steps of assigning a plurality of wirings to each group, and arranging wirings constituting a group between wirings constituting other groups.Type: GrantFiled: March 10, 2000Date of Patent: April 12, 2005Assignee: Canon Kabushiki KaishaInventors: Akira Fujii, Fumio Kishi, Hisaaki Kawade, Yoichi Ando
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Patent number: 6878027Abstract: A method for producing an electron source in which plural electron emission devices are connected in a matrix by plural row wirings and plural column wirings, the row wirings of a number m(=a×b×c) are divided into groups G1 to Ga of a number a, and the row wirings in each group are divided into sub groups SG1 to SGb of a number b, each containing the row wirings of a number c. The deposition process is executed by voltage application by selecting the row wirings of SG1 in succession and commonly to all the groups, and such deposition process is thereafter similarly executed on the sub groups starting from SG2, whereby the deposition process for all the elements is executed by executing the deposition process for each sub group by b times.Type: GrantFiled: February 24, 2000Date of Patent: April 12, 2005Assignee: Canon Kabushiki KaishaInventor: Hideshi Kawasaki
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Patent number: 6872112Abstract: To attain an increase in production speed and suitable for mass production in a substrate processing operation such as film formation requiring a hermetic atmosphere. A substrate processing method for performing a predetermined processing on a substrate is provided, which includes the steps of: arranging a surface of the substrate to be processed in a hermetic atmosphere; evacuating said hermetic atmosphere; and performing a predetermined processing on the substrate, in which the processing step is conducted after moving the evacuated hermetic atmosphere from the station for evacuation to a ifferent station.Type: GrantFiled: May 23, 2002Date of Patent: March 29, 2005Assignee: Canon Kabushiki KaishaInventor: Jiro Ota
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Patent number: 6873097Abstract: Inert gas provided at a suitable level inside a hermetically sealed cathode-ray tube display, typically of the flat-panel type, enables the display's electron-emitting device (20) to be automatically cleaned during display operation subsequent to final display sealing. Upon being struck by electrons emitted by the electron-emitting device, atoms (68) of the inert gas ionize to produce positively charged ions (124) which travel backward to the electron-emitting device and dislodge overlying contaminant material (130 and 132). A getter (26) collects dislodged contaminant. A reservoir (28) provides inert gas to replace inert gas lost during the cleaning process.Type: GrantFiled: June 28, 2001Date of Patent: March 29, 2005Assignees: Candescent Technologies Corporation, Candescent Intellectual Property Services, Inc.Inventors: Shiyou Pei, Colin D. Stanners, Frederick K. Byers
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Patent number: 6856080Abstract: A vacuum tube having its anode/collector coated with carbonized resin plus pyrocarbon material to reduce out-gassing and secondary electron emission and the method of coating the anode/collector.Type: GrantFiled: August 28, 2001Date of Patent: February 15, 2005Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Donald A. Shiffler, Jr., Michael D. Haworth
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Patent number: 6851997Abstract: The present invention relates to a process for depositing a calcium getter thin film inside a system operating under vacuum. The process comprises the steps of introducing into the system under vacuum at least one evaporable getter device with an air-stable calcium compound. The system is evacuated until a pressure value P1 is reached. The system is then heated up to the calcium evaporation temperature of the stable compound. The system evacuation continues until a pressure value P2, which is lower than P1, is reached and the system is sealed. In a preferred embodiment, the heating step separates the two evacuation steps.Type: GrantFiled: November 14, 2002Date of Patent: February 8, 2005Assignee: SAES Getters S.p.A.Inventors: Corrado Carretti, Giorgio Longoni
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Patent number: 6851995Abstract: It relates to a method of manufacturing an electron source. In an activation process, a set value of an activation gas partial pressure is switched at multi-stages and an application of a compensation voltage is not conducted for a predetermined period after switching of the set value. Alternatively, the activation is repeated plural times while a row wiring or a column wiring is switched, and the application of the compensation voltage is not conducted for the predetermined period after switching of the row wiring or the column wiring. Thus, activation processing can be uniformly performed for all electron emitting devices.Type: GrantFiled: September 26, 2002Date of Patent: February 8, 2005Assignee: Canon Kabushiki KaishaInventors: Tsuyoshi Takegami, Hisaaki Kawade, Takahiro Oguchi, Kazuhiro Jindai
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Patent number: 6846213Abstract: An electron source/image display device manufacturing apparatus according to this invention includes (A) a support which supports a substrate having a first major surface and a second major surface on which a conductor is arranged, and includes a plurality of electrostatic chucks each having a conductive member, (B) a vessel which has a gas inlet port and an exhaust port, and covers part of the first major surface, (C) a valve connected to the inlet port to introduce gas into the vessel, (D) an exhaust system connected to the exhaust port to exhaust the gas from the vessel, and (E) a power supply for applying a predetermined potential difference between the conductor and the conductive member. This apparatus arrangement enables easy, stable processing in the “forming” and “activation” steps.Type: GrantFiled: March 5, 2001Date of Patent: January 25, 2005Assignee: Canon Kabushiki KaishaInventor: Yasue Sato
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Patent number: 6840832Abstract: An image display apparatus is provided, in which the generation of discharge can be suppressed and a preferable display image can be obtained. A method of manufacturing an image display apparatus having an airtight container including a rear plate having a plurality of electron-emitting devices and a face plate which is located opposite to the rear plate and has a phosphor and an electroconductive film, includes the steps of, (A) disposing the rear plate having the plurality of electron-emitting devices and the face plate having the phosphor and the electroconductive film such that the rear plate and the face plate are opposite to each other and arranging a plurality of plate shaped spacers between the rear plate and the face plate to assemble the airtight container, and (B) applying an electric field between the rear plate and the face plate in a state that the airtight container is slanted such that a longitudinal direction of the plate-shaped spacers is not perpendicular to a gravitational direction.Type: GrantFiled: June 28, 2001Date of Patent: January 11, 2005Assignee: Canon Kabushiki KaishaInventors: Norihiro Suzuki, Yoichi Ando
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Patent number: 6837768Abstract: A method of fabricating an electron source includes the steps of fixing a first sealing member to a substrate disposed with an electroconductive member, the first sealing member surrounding the electroconductive member excepting a portion of the electroconductive member, abutting a chamber on the first sealing member to cover the electroconductive member excepting the portion of the electroconductive member and form a hermetically sealed atmosphere between the substrate and the chamber, supplying power to the portion of the electroconductive member to give part of the electroconductive member covered with the chamber an electron-emitting function, and removing the chamber from the substrate.Type: GrantFiled: March 4, 2002Date of Patent: January 4, 2005Assignee: Canon Kabushiki KaishaInventor: Junji Kawasaki
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Patent number: 6835110Abstract: To provide a method for manufacturing an electron source having electron-emitting devices with excellent electron-emitting property arranged on a substrate and enabling an image-forming apparatus capable of displaying an image with high brightness and uniformity to be enhanced in terms of screen size and production scale. The method for manufacturing the electron source includes a step of disposing a plurality of units and a plurality of wirings connected to the plurality of units on a substrate, each unit including a polymer film and a pair of electrodes with the polymer film interposed therebetween, and a step of forming electron-emitting devices from the plurality of units by repeatedly performing a process including a selecting substep of selecting a desired number of units from the plurality of units, a resistance-reducing substep of reducing resistance of the polymer films of the selected units and a gap-forming substep of forming a gap in each of the films formed by the resistance-reducing substep.Type: GrantFiled: August 7, 2002Date of Patent: December 28, 2004Assignee: Canon Kabushiki KaishaInventors: Hironobu Mizuno, Masaharu Naka, Koki Nukanobu
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Patent number: 6827619Abstract: In an electron emitting device, an electron source and an image forming apparatus making use of it, and producing methods of them, an organic film is present on a pair of conductive films forming the electron emitting device. This organic film is placed in an area on the conductive films. This prevents occurrence of leak paths between the conductive films, which used to occur because of change of the organic film on the substrate into a conductor where the organic film existed on the substrate outside the area of the conductive films, and prevents decrease in electron emission efficiency.Type: GrantFiled: September 25, 2002Date of Patent: December 7, 2004Assignee: Canon Kabushiki KaishaInventors: Hitoshi Oda, Takashi Iwaki
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Publication number: 20040242110Abstract: Disclosed is a method of manufacturing plasma display panels for carrying out aging with high productivity. In an aging process for applying a predetermined voltage and driving plasma display panels 21 for display operation, each plasma display panel is set into an aging unit provided with cooling means, and the aging is carried out on the plasma display panel while cooling the plasma display panel by the cooling means provided in the aging unit. This method can thus reduce temperature rise of the panel and prevent the panel from being cracked during the aging process.Type: ApplicationFiled: January 30, 2004Publication date: December 2, 2004Inventors: Akihiro Matsuda, Fumio Sakamoto, Kenji Date, Koji Aoto
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Patent number: 6824437Abstract: A method of manufacturing an electron-emitting device has a step of forming a pair of conductors on a substrate, the conductors being spaced from each other, and an activation process of depositing carbon or carbon compound on at least one side of the pair of conductors in an atmosphere of carbon compound gas. The activation process includes a plurality of processes of two or more stages including a first process and a second process. The first process is executed in an atmosphere of the carbon compound gas having a partial pressure higher than a partial pressure of the gas in the second process, with the second process being the last activation process.Type: GrantFiled: December 17, 2002Date of Patent: November 30, 2004Assignee: Canon Kabushiki KaishaInventors: Kazuhiro Jindai, Toshikazu Ohnishi
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Patent number: 6821180Abstract: This invention provides an electron source manufacturing apparatus and manufacturing method which facilitate downsizing and operation and are suitable for mass production. The electron source manufacturing apparatus includes a support which supports a substrate having conductors formed on it and has a means for adjusting the temperature of the substrate, a vessel which has a gas inlet port and gas exhaust port and covers a partial region on the surface of the substrate, an unit for introducing and exhausting gas into and from the vessel, and an unit for applying a voltage to the conductors. The support has a groove.Type: GrantFiled: June 26, 2001Date of Patent: November 23, 2004Assignee: Canon Kabushiki KaishaInventors: Akihiro Kimura, Kazuhiro Ohki
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Patent number: 6821174Abstract: In a method of manufacturing an image display apparatus, a first member having an electron-emitting device and a second member having a phosphor which is irradiated with an electron emitted from the electron-emitting device to emit light are seal-bonded in a seal bonding chamber in which a vacuum atmosphere is realized. An aging step for the electron-emitting device is performed before the step of seal-bonding.Type: GrantFiled: September 24, 2001Date of Patent: November 23, 2004Assignee: Canon Kabushiki KaishaInventors: Tetsuya Kaneko, Kohei Nakata, Toshihiko Miyazaki
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Patent number: 6802753Abstract: In a manufacturing process of an image forming apparatus (electron beam device) using electron emission elements, particularly, surface conduction type electron emission elements, wirings on an electron source substrate on which the wirings and element electrodes are formed are opposite to electrodes for a face plate, and a given voltage is applied between the wirings and the electrodes to thereby generate a discharge phenomenon in advance, thus removing a protrusion or the like. In this way, when an electric field applying process is conducted on the electron source substrate, a factor such as a protrusion in an electron source which induces a discharge phenomenon in driving an electron beam device represented by an image forming apparatus is removed, thus realizing an image forming apparatus excellent in display characteristic with no defective pixel even in image display for a long period of time.Type: GrantFiled: November 28, 2000Date of Patent: October 12, 2004Assignee: Canon Kabushiki KaishaInventors: Yoichi Ando, Keisuke Yamamoto, Hideshi Kawasaki, Tamaki Kobayashi, Satoshi Mogi, Akira Hayama
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Patent number: 6802752Abstract: An electron-emitting device comprises a pair of oppositely disposed electrodes and an electroconductive film arranged between the electrodes and including a high resistance region. The high resistance region has a deposit containing carbon as a principal ingredient. The electron-emitting device can be used for an electron source of an image-forming apparatus of the flat panel type.Type: GrantFiled: June 14, 1999Date of Patent: October 12, 2004Assignee: Canon Kabushiki KaishaInventors: Toshikazu Ohnishi, Masato Yamanobe, Ichiro Nomura, Hidetoshi Suzuki, Yoshikazu Banno, Takeo Ono, Masanori Mitome
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Patent number: 6783414Abstract: A method for manufacturing a cathode comprises the steps of: a process for applying onto a substrate a fluid mixture comprising polymers or precursors to the polymers, fine particles of electroconductive material or organic metal compound, and solvent; a process for removing the solvent by heating the fluid mixture applied on the substrate, thereby obtaining an electroconductive organic film comprising the polymers and the electroconductive material; and a process for forming a gap at a portion of the electroconductive organic film by applying an electrical current thereto. Accordingly, a simple method for manufacturing cathodes, electron sources, and image forming apparatuses with excellent electron emitting properties can be realized.Type: GrantFiled: January 25, 2002Date of Patent: August 31, 2004Assignee: Canon Kabushiki KaishaInventors: Masato Minami, Takashi Iwaki
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Patent number: 6780073Abstract: A method of manufacturing an electron-emitting device includes a process for forming a pair of electric conductors spaced from each other on a substrate, and an activation process for forming a film of carbon or a carbon compound on at least one of the pair of electric conductors. The activation process is sequentially performed within plural containers having different atmospheres.Type: GrantFiled: April 2, 2002Date of Patent: August 24, 2004Assignee: Canon Kabushiki KaishaInventors: Miki Tamura, Toshikazu Ohnishi, Kazuhiro Jindai
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Patent number: 6761605Abstract: The object of this invention is to provide a plasma display panel in which an aging process essential to the manufacturing process generates minimal phosphor deterioration, enabling a relatively high luminous efficiency and high quality color production to be produced. To achieve this object, the aging process takes place while gas generated inside the panel is evacuated. Alternatively, after completion of the aging process, the phosphor of the whole panel is heated to restore heat deterioration.Type: GrantFiled: August 21, 2001Date of Patent: July 13, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki
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Patent number: 6755709Abstract: In a method of fabricating an electron-emitting device, an activation step is performed in shorter time. The method forms a deposit of carbon or carbon compound on a precursory structure which becomes an electron-emitting region in an electron-emitting device made on a substrate and comprises a first step for depositing carbon or carbon compound in a gas atmosphere which includes a carbon compound of a first molecular weight, and subsequently a second step for depositing carbon or carbon compound in a gas atmosphere which includes a carbon compound of a second molecular weight smaller than the first molecular weight.Type: GrantFiled: May 23, 2002Date of Patent: June 29, 2004Assignee: Canon Kabushiki KaishaInventors: Kazuhiro Jindai, Mineto Yagyu
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Patent number: 6752676Abstract: A method for producing an electron-emitting device having an electroconductive film with an electron-emitting region extending between plural electrodes, includes a step of forming the electron-emitting region in the electroconductive film, including a step of heating the electroconductive film, and a step of energizing the electroconductive film in an atmosphere in which a gas for promoting cohesion of the electroconductive film exists.Type: GrantFiled: February 16, 1999Date of Patent: June 22, 2004Assignee: Canon Kabushiki KaishaInventors: Masataka Yamashita, Hisaaki Kawade, Toshikazu Ohnishi, Tatsuya Iwasaki, Takeo Ono
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Patent number: 6743066Abstract: In an electron source manufacturing method and apparatus, a plurality of electron-emitting devices are commonly connected to a first wiring and to a plurality of second wirings, respectively. A voltage V1 is applied to the plurality of devices connected to the first wiring by the difference between potentials applied to the first wiring and the plurality of second wirings.Type: GrantFiled: February 24, 2000Date of Patent: June 1, 2004Assignee: Canon Kabushiki KaishaInventors: Takahiro Oguchi, Noritake Suzuki
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Publication number: 20040082249Abstract: An electron-emitting device comprises a pair of oppositely disposed electrodes and an electroconductive film arranged between the electrodes and including a high resistance region. The high resistance region has a deposit containing carbon as a principal ingredient. The electron-emitting device can be used for an electron source of an image-forming apparatus of the flat panel type.Type: ApplicationFiled: July 10, 2003Publication date: April 29, 2004Applicant: CANON KABUSHIKI KAISHAInventors: Toshikazu Ohnishi, Masato Yamanobe, Ichiro Nomura, Hidetoshi Suzuki, Yoshikazu Banno, Takeo Ono, Masanori Mitome
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Patent number: 6726520Abstract: 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 21, 2001Date of Patent: April 27, 2004Assignee: 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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Patent number: 6712660Abstract: A method for adjusting characteristics of an electron source having a plurality of electron-emitting devices, and a method for manufacturing the electron source include the step of applying a pulse of a voltage for adjustment to an electron-emitting device to be adjusted one or more times according to a characteristic of the electron-emitting device, wherein the voltage for adjustment is selected from a plurality of voltages having discrete values according to the characteristic of the electron-emitting device, and a number of applying times of the pulse is determined according to the characteristic of the electron-emitting device and the selected voltage.Type: GrantFiled: August 2, 2002Date of Patent: March 30, 2004Assignee: Canon Kabushiki KaishaInventors: Shuji Aoki, Takahiro Oguchi
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Patent number: 6705914Abstract: A high pressure discharge lamp which achieves a long life of at least 3000 hours and in which variations in lamp characteristics are suppressed is disclosed. In the high pressure discharge lamp of the present invention, during manufacturing of an electrode, a covering member 123 having a coil shape and being made of refractory metal is applied on a discharge side end of an electrode rod 122 made of refractory metal so as to cover a circumference of the electrode rod 122 in a vicinity of the discharge side end. The discharge side end 124 on which the covering member 123 is applied is fused into a semi-sphere by intermittently heat fusing the discharge side end according, for instance, to arc discharge or laser irradiation.Type: GrantFiled: April 17, 2001Date of Patent: March 16, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takashi Tsutatani, Yoshiki Kitahara, Toshiyuki Shimizu
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Patent number: 6685522Abstract: Disclosed is a product quality test in a winding step of the entire manufacturing process of a deflection yoke, which is a core part of a display device employing a cathode ray tube such as a color TV or a monitor, and in particular, a winding zig for measuring magnetic fields of a deflection yoke and a magnetic field measuring system of a deflection yoke using the winding zig.Type: GrantFiled: June 8, 2001Date of Patent: February 3, 2004Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: In Jung Yun, Ho Jin Cho, Bong Woo Lee, Byung Hoon Kang, Kwang Yun Choi
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Patent number: 6666738Abstract: The object of this invention is to provide a plasma display panel in which an aging process essential to the manufacturing process generates minimal phosphor deterioration, enabling a relatively high luminous efficiency and high quality color production to be produced. To achieve this object, the aging process takes place while gas generated inside the panel is evacuated. Alternatively, after completion of the aging process, the phosphor of the whole panel is heated to restore heat deterioration.Type: GrantFiled: February 12, 2001Date of Patent: December 23, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroyuki Kado, Mitsuhiro Ohtani, Masaki Aoki
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Patent number: 6645028Abstract: A method for improving uniformity of emission current of a field emission display (100) includes the step of providing a first carbon nanotube (119) and a second carbon nanotube (118), which at least partially define an electron emitter (116). First carbon nantotube (119) is characterized by a first emission current capability and second carbon nanotube (118) is characterized by a second emission current capability, which is less than the first emission current capability. The method further includes the steps of causing first carbon nanotube (119) to be reduced in length at a first rate and, concurrently, causing second carbon nanotube (118) to be reduced in length at a second rate, which is less than the first rate and can be equal to zero, thereby reducing the difference between the second emission current capability and the first emission current capability and, thus, improving uniformity of emission current.Type: GrantFiled: June 7, 2000Date of Patent: November 11, 2003Assignee: Motorola, Inc.Inventors: Kenneth A. Dean, Babu R. Chalamala
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Patent number: 6638128Abstract: An electron is source formed by a plurality of electron-emitting devices provided on a substrate and connected by a wiring. Use of an electron ray manufacturing apparatus having electrical connecting means connected to the wiring at three or more points can uniformize characteristics of a plurality of the electron-emitting devices.Type: GrantFiled: February 23, 2000Date of Patent: October 28, 2003Assignee: Canon Kabushiki KaishaInventor: Noritake Suzuki
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Patent number: 6626718Abstract: A method for manufacturing an electron source includes the steps of covering a substrate provided with a first electrode and a second electrode by a container, introducing a gas composed of a carbon compound into the container, and forming a carbon film by applying a voltage between the first electrode and the second electrode. The relationship 1/(4/Cx−1/Cz)≧Sout≧4Sact−Cin is satisfied, where Cin is the conductance from the gas inlet to the position of the substrate nearest to the gas inlet, Cx is the conductance from the position of the substrate nearest to the gas inlet to the position of the substrate nearest to the gas outlet, Sout is the effective exhaust rate, Sact is the consumption rate of the gas, and Cz is the conductance from the substrate to the gas outlet. An apparatus for manufacturing an electron source and a method for manufacturing an image-forming apparatus are also disclosed.Type: GrantFiled: September 18, 2001Date of Patent: September 30, 2003Assignee: Canon Kabushiki KaishaInventor: Tamayo Hiroki
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Patent number: 6626717Abstract: In a manufacturing step for forming an organic EL element, the organic EL element is provided so as to have an anode and a cathode with a luminescent layer having an organic luminescent material interposed therebetween. Then, an aging treatment is performed. In the aging treatment, a curve of change in luminance with time is measured in driving the organic EL element at constant current. Then, the curve of change in luminance with time is divided into a component having a slowest luminance age-deterioration rate and other components by analyzing the curve and forming a fitting curve having a plurality of members that is fitted to the curve of change in luminance with time. Moreover, the aging treatment is conducted until a luminance of the element becomes approximately equal to an initial value A1 of the component having a slowest luminance age-deterioration rate.Type: GrantFiled: December 21, 2001Date of Patent: September 30, 2003Assignee: Denso CorporationInventors: Koichi Miyashita, Takayoshi Kuriyama, Masahiko Ishii