Patents by Inventor Yoshinobu Sekiguchi
Yoshinobu Sekiguchi 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: 7786495Abstract: A light-emitting element array can be manufactured without the separation of a metal reflection layer. The light-emitting element array includes a plurality of light-emitting element portions provided on a substrate, at least one space of the spaces between adjacent light-emitting element portions being electrically separated from each other, wherein the metal reflection layer is provided on the substrate and under the plurality of light-emitting element portions, and a resistive layer for electrical separation between the light-emitting element portions is provided between the plurality of light-emitting element portions and the metal reflection layer. The plurality of light-emitting element portions are divided into a plurality of blocks. Each of the blocks includes a plurality of light-emitting portions. The electrical separation between the light-emitting portions can be made as electrical separation between adjacent light-emitting element portions in adjacent and different blocks.Type: GrantFiled: October 28, 2008Date of Patent: August 31, 2010Assignee: Canon Kabushiki KaishaInventors: Tetsuya Takeuchi, Makoto Koto, Kenji Yamagata, Yoshinobu Sekiguchi, Takao Yonehara
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Patent number: 7732238Abstract: A solid-state image sensing apparatus having a three-dimensional structure whose manufacturing process can be simplified is provided. A solid-state image sensing apparatus formed by bonding a first member and a second member is provided. The first member has a first surface on the side of the bonding interface between the first member and the second member and a second surface on the opposite side of the bonding interface. The second member has a third surface on the bonding interface side and a fourth surface on the opposite side of the bonding interface. The first member includes photoelectric conversion elements which are formed on the first surface before the first member is bonded to the second member. The second member includes circuit elements which are formed on the third surface before bonding.Type: GrantFiled: May 2, 2006Date of Patent: June 8, 2010Assignee: Canon Kabushiki KaishaInventors: Yoshinobu Sekiguchi, Takao Yonehara
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Publication number: 20100026779Abstract: A novel semiconductor article manufacturing method and the like are provided. A method of manufacturing a semiconductor article having a compound semiconductor multilayer film formed on a semiconductor substrate includes: preparing a member including an etching sacrificial layer (1010), a compound semiconductor multilayer film (1020), an insulating film (2010), and a semiconductor substrate (2000) on a compound semiconductor substrate (1000), and having a first groove (2005) which passes through the semiconductor substrate and the insulating film, and a semiconductor substrate groove (1025) which is a second groove provided in the compound semiconductor multilayer film so as to be connected to the first groove, and bringing an etchant into contact with the etching sacrificial layer through the first groove and then the second groove and etching the etching sacrificial layer to separate the compound semiconductor substrate from the member.Type: ApplicationFiled: October 25, 2007Publication date: February 4, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Takao Yonehara, Kenji Yamagata, Yoshinobu Sekiguchi, Kojiro Nishi
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Publication number: 20090315965Abstract: An LED array having no insulating film between the LED structure and the reflector thereof is manufactured by forming a luminescent layer 1102 and a DBR layer 1103 on a first substrate 100 with an insulating layer 1101 interposed between them, patterning the DBR layer and the luminescent layer to make them show an islands-like profile, bonding the DBR layer and a second substrate 110 with an insulating layer 1111 interposed between them, and separating the first substrate and the luminescent layer from each other.Type: ApplicationFiled: October 24, 2007Publication date: December 24, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Yamagata, Yoshinobu Sekiguchi, Takao Yonehara, Kojiro Nishi
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Patent number: 7550305Abstract: An object of the present invention is to provide a method of forming a light-emitting element at a lower cost than a conventional cost with suppressing the deterioration of the substrate due to thermal distortion in comparison with a conventional method of recycling a substrate and further having an effect equal to that of the method of recycling a substrate.Type: GrantFiled: October 18, 2007Date of Patent: June 23, 2009Assignee: Canon Kabushiki KaishaInventors: Kenji Yamagata, Takao Yonehara, Yoshinobu Sekiguchi, Kojiro Nishi
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Publication number: 20090057693Abstract: A light-emitting element array can be manufactured without the separation of a metal reflection layer. The light-emitting element array includes a plurality of light-emitting element portions provided on a substrate, at least one space of the spaces between adjacent light-emitting element portions being electrically separated from each other, wherein the metal reflection layer is provided on the substrate and under the plurality of light-emitting element portions, and a resistive layer for electrical separation between the light-emitting element portions is provided between the plurality of light-emitting element portions and the metal reflection layer. The plurality of light-emitting element portions are divided into a plurality of blocks. Each of the blocks includes a plurality of light-emitting portions. The electrical separation between the light-emitting portions can be made as electrical separation between adjacent light-emitting element portions in adjacent and different blocks.Type: ApplicationFiled: October 28, 2008Publication date: March 5, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Tetsuya Takeuchi, Makoto Koto, Kenji Yamagata, Yoshinobu Sekiguchi, Takao Yonehara
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Patent number: 7491976Abstract: A light-emitting element array can be manufactured without the separation of a metal reflection layer. The light-emitting element array includes a plurality of light-emitting element portions provided on a substrate, at least one space of the spaces between adjacent light-emitting element portions being electrically separated from each other, wherein the metal reflection layer is provided on the substrate and under the plurality of light-emitting element portions, and a resistive layer for electrical separation between the light-emitting element portions is provided between the plurality of light-emitting element portions and the metal reflection layer. The plurality of light-emitting element portions are divided into a plurality of blocks. Each of the blocks includes a plurality of light-emitting portions. The electrical separation between the light-emitting portions can be made as electrical separation between adjacent light-emitting element portions in adjacent and different blocks.Type: GrantFiled: July 25, 2007Date of Patent: February 17, 2009Assignee: Canon Kabushiki KaishaInventors: Tetsuya Takeuchi, Makoto Koto, Kenji Yamagata, Yoshinobu Sekiguchi, Takao Yonehara
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Publication number: 20090003401Abstract: Provided is a surface emitting laser which can maintain a fundamental transverse mode to obtain higher power while higher-order transverse mode oscillations are suppressed, and a method of manufacturing the surface emitting laser. The surface emitting laser includes: an aperture portion to be a path for injecting a current to an active layer; a current confinement region provided in the vicinity of the aperture portion; and a current injection region which is provided on an opposite side to a light output side with respect to the active layer therebetween, in which a current injection path in the current injection region has a smaller diameter than the aperture portion.Type: ApplicationFiled: June 20, 2008Publication date: January 1, 2009Applicant: CANON KABUSHIKI KAISHAInventor: Yoshinobu Sekiguchi
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Patent number: 7420839Abstract: A magnetization reversal method is disclosed in which an external magnetic field is applied to a magnetoresistive film requiring a strong magnetic film for reversal. A weak magnetic field is applied when magnetically coupled perpendicular magnetic films are used in which the magnetoresistive film has a structure wherein a nonmagnetic film is placed between magnetic films with an easy axis of magnetization along a perpendicular direction to a film plane, and in which said external magnetic field is comprised of magnetic fields from a plurality of directions including a direction of easy magnetization of the magnetic films.Type: GrantFiled: April 24, 2006Date of Patent: September 2, 2008Assignee: Canon Kabushiki KaishaInventors: Takashi Ikeda, Yoshinobu Sekiguchi, Naoki Nishimura
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Publication number: 20080198592Abstract: A light emitting device array chip comprises a light emitting device array having a plurality of light emitting devices arranged two-dimensionally on a substrate. The profile of the light emitting device array chip is a parallelogram with two long sides and two short sides forming an acute or obtuse angle. The light emitting device array has a plurality of blocks arranged along the long sides, and each block has a plurality of segments arranged along the long sides. In each segment, a plurality of light emitting devices are arranged in a plurality of rows along the long sides and also in a plurality of rows along the short sides, and they are connected to a common electrode. At least a single wire is provided for electrically connecting a plurality of light emitting devices selected from different segments, and an electrode pad for wire bonding is formed on the at least single wire. The electrode pad is arranged at the side of the long side of a corner of the acute angles on the array chip.Type: ApplicationFiled: February 14, 2008Publication date: August 21, 2008Applicant: CANON KABUSHIKI KAISHAInventor: Yoshinobu Sekiguchi
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Patent number: 7399693Abstract: This invention provides a semiconductor film manufacturing method using a new separation technique and applications thereof. The semiconductor film manufacturing method of this invention includes a separation layer forming a step of hetero-epitaxially growing a separation layer (2) on a seed substrate (1), a semiconductor film forming step of forming a semiconductor film (3) on the separation layer (2), and a separation step of separating, by using the separation layer (2), the semiconductor film (3) from a composite member (Ia) formed in the semiconductor film forming step.Type: GrantFiled: June 15, 2005Date of Patent: July 15, 2008Assignee: Canon Kabushiki KaishaInventors: Yoshinobu Sekiguchi, Takao Yonehara, Makoto Koto, Masahiro Okuda, Tetsuya Shimada
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Publication number: 20080102545Abstract: An object of the present invention is to provide a method of forming a light-emitting element at a lower cost than a conventional cost with suppressing the deterioration of the substrate due to thermal distortion in comparison with a conventional method of recycling a substrate and further having an effect equal to that of the method of recycling a substrate.Type: ApplicationFiled: October 18, 2007Publication date: May 1, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Kenji YAMAGATA, Takao YONEHARA, Yoshinobu SEKIGUCHI, Kojiro NISHI
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Publication number: 20070262333Abstract: A light-emitting element array can be manufactured without the separation of a metal reflection layer. The light-emitting element array includes a plurality of light-emitting element portions provided on a substrate, at least one space of the spaces between adjacent light-emitting element portions being electrically separated from each other, wherein the metal reflection layer is provided on the substrate and under the plurality of light-emitting element portions, and a resistive layer for electrical separation between the light-emitting element portions is provided between the plurality of light-emitting element portions and the metal reflection layer. The plurality of light-emitting element portions are divided into a plurality of blocks. Each of the blocks includes a plurality of light-emitting portions. The electrical separation between the light-emitting portions can be made as electrical separation between adjacent light-emitting element portions in adjacent and different blocks.Type: ApplicationFiled: July 25, 2007Publication date: November 15, 2007Applicant: Canon Kabushiki KaishaInventors: Tetsuya TAKEUCHI, Makoto Koto, Kenji Yamagata, Yoshinobu Sekiguchi, Takao Yonehara
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Publication number: 20060246688Abstract: This invention provides a semiconductor film manufacturing method using a new separation technique and applications thereof. The semiconductor film manufacturing method of this invention includes a separation layer forming a step of hetero-epitaxially growing a separation layer (2) on a seed substrate (1), a semiconductor film forming step of forming a semiconductor film (3) on the separation layer (2), and a separation step of separating, by using the separation layer (2), the semiconductor film (3) from a composite member (Ia) formed in the semiconductor film forming step.Type: ApplicationFiled: June 15, 2005Publication date: November 2, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Yoshinobu Sekiguchi, Takao Yonehara, Makoto Koto, Masahiro Okuda, Tetsuya Shimada
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Publication number: 20060203539Abstract: A magnetization reversal method is a method of applying an external magnetic field to a magnetoresistive film, in which the magnetoresistive film has a structure wherein a nonmagnetic film is placed between magnetic films with an easy axis of magnetization along a perpendicular direction to a film plane and in which the external magnetic field is comprised of magnetic fields from a plurality of directions including a direction of easy magnetization of the magnetic films.Type: ApplicationFiled: April 24, 2006Publication date: September 14, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Ikeda, Yoshinobu Sekiguchi, Naoki Nishimura
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Publication number: 20060199296Abstract: A solid-state image sensing apparatus having a three-dimensional structure whose manufacturing process can be simplified is provided. A solid-state image sensing apparatus formed by bonding a first member and a second member is provided. The first member has a first surface on the side of the bonding interface between the first member and the second member and a second surface on the opposite side of the bonding interface. The second member has a third surface on the bonding interface side and a fourth surface on the opposite side of the bonding interface. The first member includes photoelectric conversion elements which are formed on the first surface before the first member is bonded to the second member. The second member includes circuit elements which are formed on the third surface before bonding.Type: ApplicationFiled: May 2, 2006Publication date: September 7, 2006Applicant: CANON KABUSHIKI KAISHAInventors: YOSHINOBU SEKIGUCHI, TAKAO YONEHARA
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Patent number: 7035138Abstract: A magnetization reversal method is a method of applying an external magnetic field to a magnetoresistive film, in which the magnetoresistive film has a structure wherein a nonmagnetic film is placed between magnetic films with an easy axis of magnetization along a perpendicular direction to a film plane and in which the external magnetic field is comprised of magnetic fields from a plurality of directions including a direction of easy magnetization of the magnetic films.Type: GrantFiled: September 24, 2001Date of Patent: April 25, 2006Assignee: Canon Kabushiki KaishaInventors: Takashi Ikeda, Yoshinobu Sekiguchi, Naoki Nishimura
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Publication number: 20050121707Abstract: A solid-state image sensing apparatus having a three-dimensional structure whose manufacturing process can be simplified is provided. A solid-state image sensing apparatus formed by bonding a first member (104) and a second member (108) is provided. The first member (104) has a first surface on the side of the bonding interface between the first member (104) and the second member (108) and a second surface on the opposite side of the bonding interface. The second member (108) has a third surface on the bonding interface side and a fourth surface on the opposite side of the bonding interface. The first member (104) includes photoelectric conversion elements (105) which are formed on the first surface before the first member (104) is bonded to the second member (108). The second member (108) includes circuit elements (106) which are formed on the third surface before bonding.Type: ApplicationFiled: January 7, 2005Publication date: June 9, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Yoshinobu Sekiguchi, Takao Yonehara
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Publication number: 20040262722Abstract: A first adhesive member is adhered to a substrate formed with a circuit. After that, the substrate adhered with the first adhesive member is separated into a plurality of chips. Subsequently, an adhesion of a portion of the first adhesive member where desired chips are adhered is decreased, and the desired chips are selectively removed from the first adhesive member.Type: ApplicationFiled: June 9, 2004Publication date: December 30, 2004Applicant: Canon Kabushiki KaishaInventor: Yoshinobu Sekiguchi
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Patent number: 6626719Abstract: An electron-emitting device comprises a pair of oppositely disposed electrodes and an electroconductive film inclusive of an electron-emitting region arranged between the electrodes. The electric resistance of the electroconductive film is reduced after forming the electron-emitting region in the course of manufacturing the electron-emitting device.Type: GrantFiled: January 10, 1997Date of Patent: September 30, 2003Assignee: Canon Kabushiki KaishaInventors: Takeo Ono, Hisaaki Kawade, Yoshinobu Sekiguchi, Yasuhiro Hamamoto, Keisuke Yamamoto, Takeo Tsukamoto, Masato Yamanobe