Patents by Inventor Keiichi Haraguchi
Keiichi Haraguchi 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: 11971633Abstract: An electrode structure includes: a plurality of pixel electrodes arranged separately from each other; and a plurality of dielectric layers laminated in a first direction with respect to the plurality of pixel electrodes, in which the plurality of dielectric layers includes: a first dielectric layer that spreads over the plurality of pixel electrodes in a direction intersecting with the first direction; and a second dielectric layer that includes dielectric material having a refractive index higher than that of the first dielectric layer, sandwiches the first dielectric layer together with the plurality of pixel electrodes, and has a slit at a position overlapping space between pixel electrodes adjacent when viewed from the first direction.Type: GrantFiled: May 15, 2020Date of Patent: April 30, 2024Assignees: SONY SEMICONDUCTOR SOLUTIONS CORPORATION, SONY GROUP CORPORATIONInventors: Takashi Sakairi, Tomoaki Honda, Tsuyoshi Okazaki, Keiichi Maeda, Chiho Araki, Katsunori Dai, Shunsuke Narui, Kunihiko Hikichi, Kouta Fukumoto, Toshiaki Okada, Takuma Matsuno, Yuu Kawaguchi, Yuuji Adachi, Koichi Amari, Hideki Kawaguchi, Seiya Haraguchi, Takayoshi Masaki, Takuya Fujino, Tadayuki Dofuku, Yosuke Takita, Kazuhiro Tamura, Atsushi Tanaka
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Patent number: 8344444Abstract: To provide a technique capable of improving reliability of a semiconductor device having a nonvolatile memory cell by suppressing the reduction of the drive force. A memory cell is configured by a selection pMIS having a selection gate electrode including a conductive film exhibiting a p-type conductivity and a memory pMIS having a memory gate electrode including a conductive film exhibiting a p-type conductivity, and at the time of write, hot electrons are injected into a charge storage layer from the side of a semiconductor substrate 1 and at the time of erase, hot holes are injected into the charge storage layer from the memory gate electrode.Type: GrantFiled: February 3, 2010Date of Patent: January 1, 2013Assignee: Renesas Electronics CorporationInventors: Yoshiyuki Kawashima, Keiichi Haraguchi
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Patent number: 8050066Abstract: The present invention aims to enhance the reliability of a semiconductor device having first through fourth capacitive elements. The first through fourth capacitive elements are disposed over a semiconductor substrate. A series circuit of the first and second capacitive elements and a series circuit of the third and fourth capacitive elements are coupled in parallel between first and second potentials. Lower electrodes of the first and third capacitive elements are respectively formed by a common conductor pattern and coupled to the first potential. Lower electrodes of the second and fourth capacitive elements are respectively formed by a conductor pattern of the same layer as the above conductor pattern and coupled to the second potential. Upper electrodes of the first and second capacitive elements are respectively formed by a common conductor pattern and brought to a floating potential.Type: GrantFiled: April 11, 2008Date of Patent: November 1, 2011Assignee: Renesas Electronics CorporationInventors: Keiichi Haraguchi, Toshikazu Matsui, Satoshi Kamei, Hisanori Ito
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Publication number: 20100200909Abstract: To provide a technique capable of improving reliability of a semiconductor device having a nonvolatile memory cell by suppressing the reduction of the drive force. A memory cell is configured by a selection pMIS having a selection gate electrode including a conductive film exhibiting a p-type conductivity and a memory pMIS having a memory gate electrode including a conductive film exhibiting a p-type conductivity, and at the time of write, hot electrons are injected into a charge storage layer from the side of a semiconductor substrate 1 and at the time of erase, hot holes are injected into the charge storage layer from the memory gate electrode.Type: ApplicationFiled: February 3, 2010Publication date: August 12, 2010Inventors: Yoshiyuki Kawashima, Keiichi Haraguchi
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Publication number: 20080283889Abstract: The present invention aims to enhance the reliability of a semiconductor device having first through fourth capacitive elements. The first through fourth capacitive elements are disposed over a semiconductor substrate. A series circuit of the first and second capacitive elements and a series circuit of the third and fourth capacitive elements are coupled in parallel between first and second potentials. Lower electrodes of the first and third capacitive elements are respectively formed by a common conductor pattern and coupled to the first potential. Lower electrodes of the second and fourth capacitive elements are respectively formed by a conductor pattern of the same layer as the above conductor pattern and coupled to the second potential. Upper electrodes of the first and second capacitive elements are respectively formed by a common conductor pattern and brought to a floating potential.Type: ApplicationFiled: April 11, 2008Publication date: November 20, 2008Inventors: Keiichi HARAGUCHI, Toshikazu Matsui, Satoshi Kamei, Hisanori Ito
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Patent number: 7358129Abstract: A reduction in size nonvolatile semiconductors for use in a memory device and an increase in the capacity thereof are promoted. Each memory cell of a flash memory is provided with a field effect transistor having a first gate insulator film formed on a p-type well, a selector gate which is formed on the first insulator film and has side faces and a top face covered with a silicon oxide film (first insular film), floating gates which are formed in a side-wall form on both sides of the selector gate and which are electrically isolated from the selector gate through the silicon oxide film, a second gate insulator film formed to cover the silicon oxide film and the surface of each of the floating gates, and a control gate formed over the second gate insulator film.Type: GrantFiled: October 19, 2006Date of Patent: April 15, 2008Assignee: Renesas Technology Corp.Inventors: Keiichi Haraguchi, Masataka Kato, Kenji Kanamitsu
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Patent number: 7282411Abstract: An AND flash memory of the type wherein a memory cell is constituted of n-type semiconductor regions (a source and a drain) formed in a p-type well of a semiconductor substrate and three gates (including a floating gate, a control gate and a selective gate) is manufactured. In the manufacture, arsenic (As) is introduced into a p-type well in the vicinity of one of side walls of the selective gate to form n-type semiconductor regions (a source and a drain). Thereafter, to cope with a drain disturb problem, the substrate is thermally treated by use of an ISSG (In-Situ Steam Generation) oxidation method so that a first gate, insulating film disposed in the vicinity of one of side walls, at which the n-type semiconductor regions have been formed, is formed thick.Type: GrantFiled: January 18, 2005Date of Patent: October 16, 2007Assignee: Renesas Technology Corp.Inventors: Kenji Kanamitsu, Takashi Moriyama, Naohiro Hosoda, Keiichi Haraguchi, Tetsuo Adachi
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Patent number: 7180788Abstract: A non-volatile semiconductor memory device provides for higher integration by reducing the area of occupation of direct peripheral circuits, in which the memory cell of an AND type flash memory includes a selection gate, a float gate, a control gate that functions as a word line, and an n-type semiconductor region (source, drain) that functions as a local bit line. A pair of local bit lines adjacent to each other in a memory mat are connected with one global bit line at one end in the direction of the column of the memory mat, and a selection MOS transistor, formed by one enhancement type MOS transistor and one depletion type MOS transistor; is connected in series with each of the pair of local bit lines. One of the local bit lines is selected by turning the selection MOS transistor on/off.Type: GrantFiled: January 7, 2005Date of Patent: February 20, 2007Assignee: Renesas Technology Corp.Inventors: Kenji Kanamitsu, Tetsuo Adachi, Masataka Kato, Keiichi Haraguchi
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Publication number: 20070034935Abstract: A reduction in size nonvolatile semiconductors for use in a memory device and an increase in the capacity thereof are promoted. Each memory cell of a flash memory is provided with a field effect transistor having a first gate insulator film formed on a p-type well, a selector gate which is formed on the first insulator film and has side faces and a top face covered with a silicon oxide film (first insular film), floating gates which are formed in a side-wall form on both sides of the selector gate and which are electrically isolated from the selector gate through the silicon oxide film, a second gate insulator film formed to cover the silicon oxide film and the surface of each of the floating gates, and a control gate formed over the second gate insulator film.Type: ApplicationFiled: October 19, 2006Publication date: February 15, 2007Inventors: Keiichi Haraguchi, Masataka Kato, Kenji Kanamitsu
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Patent number: 7126184Abstract: A reduction in size nonvolatile semiconductors for use in a memory device and an increase in the capacity thereof are promoted. Each memory cell of a flash memory is provided with a field effect transistor having a first gate insulator film formed on a p-type well, a selector gate which is formed on the first insulator film and has side faces and a top face covered with a silicon oxide film (first insular film), floating gates which are formed in a side-wall form on both sides of the selector gate and which are electrically isolated from the selector gate through the silicon oxide film, a second gate insulator film formed to cover the silicon oxide film and the surface of each of the floating gates, and a control gate formed over the second gate insulator film.Type: GrantFiled: June 8, 2005Date of Patent: October 24, 2006Assignee: Renesas Technology Corp.Inventors: Keiichi Haraguchi, Masataka Kato, Kenji Kanamitsu
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Publication number: 20060144272Abstract: A process for producing a water-developable printing plate for use in relief printing, comprising subjecting a solid plate made of a photosensitive resin composition including at least (a) a hydrophilic resin, (b) a hydrophobic resin, (c) a photopolymerizable unsaturated compound and (d) a photopolymerization initiator to at least an exposure step with actinic light, a development step and a post-exposure step, wherein the above described post-exposure step is carried out in a low oxygen concentration environment.Type: ApplicationFiled: February 17, 2004Publication date: July 6, 2006Inventors: Keiichi Haraguchi, Masahiro Yoshida
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Patent number: 7015090Abstract: At least not less than one capacitor formation trench providing an uneven surface is formed on the surface of a capacitor formation region. Thus, the surface area of a capacitor is increased, which enables improvement of the capacitance of the capacitor per unit area. Further, by forming the capacitor formation trench and an element formation trench that are formed in the surface of the semiconductor substrate by the same step, it is possible to simplify the manufacturing process. Whereas, a dielectric film of the capacitor in the capacitor formation region and a high-voltage gate insulating film in a MISFET formation region are formed by the same step; alternatively, the dielectric film of the capacitor in the capacitor formation region and a memory gate interlayer film between a polysilicon layer and a polysilicon layer in the memory cell formation region are formed by the same step.Type: GrantFiled: April 8, 2003Date of Patent: March 21, 2006Assignee: Renesas Technology Corp.Inventors: Tsutomu Okazaki, Daisuke Okada, Yoshihiro Ikeda, Keisuke Tsukamoto, Tatsuya Fukumura, Shoji Shukuri, Keiichi Haraguchi, Koji Kishi
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Publication number: 20060033141Abstract: At least not less than one capacitor formation trench providing an uneven surface is formed on the surface of a capacitor formation region. Thus, the surface area of a capacitor is increased, which enables improvement of the capacitance of the capacitor is increased, which enables improvement of the capacitance of the capacitor per unit area. Further, by forming the capacitor formation trench and an element formation trench that are formed in the surface of the semiconductor substrate by the same step, it is possible to simplify the manufacturing process. Whereas, a dielectric film of the capacitor in the capacitor formation region and a high-voltage insulating film in a MISFET formation region are formed by the same step; alternatively, the dielectric of the capacitor in the capacitor formation region and a memory gate interlayer film between a polysilicon layer and a polysilicon layer in the memory cell formation region are formed by the same step.Type: ApplicationFiled: October 13, 2005Publication date: February 16, 2006Inventors: Tsutomu Okazaki, Daisuke Okada, Yoshihiro Ikeda, Keisuke Tsukamoto, Tatsuya Fukumura, Shoji Shukuri, Keiichi Haraguchi, Koji Kishi
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Publication number: 20050269623Abstract: A reduction in size nonvolatile semiconductors for use in a memory device and an increase in the capacity thereof are promoted. Each memory cell of a flash memory is provided with a field effect transistor having a first gate insulator film formed on a p-type well, a selector gate which is formed on the first insulator film and has side faces and a top face covered with a silicon oxide film (first insular film), floating gates which are formed in a side-wall form on both sides of the selector gate and which are electrically isolated from the selector gate through the silicon oxide film, a second gate insulator film formed to cover the silicon oxide film and the surface of each of the floating gates, and a control gate formed over the second gate insulator film.Type: ApplicationFiled: June 8, 2005Publication date: December 8, 2005Inventors: Keiichi Haraguchi, Masataka Kato, Kenji Kanamitsu
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Publication number: 20050162885Abstract: A non-volatile semiconductor memory device provides for higher integration by reducing the area of occupation of direct peripheral circuits, in which the memory cell of an AND type flash memory includes a selection gate, a float gate, a control gate that functions as a word line, and an n-type semiconductor region (source, drain) that functions as a local bit line. A pair of local bit lines adjacent to each other in a memory mat are connected with one global bit line at one end in the direction of the column of the memory mat, and a selection MOS transistor, formed by one enhancement type MOS transistor and one depletion type MOS transistors is connected in series with each of the pair of local bit lines. One of the local bit lines is selected by turning the selection MOS transistor on/off.Type: ApplicationFiled: January 7, 2005Publication date: July 28, 2005Inventors: Kenji Kanamitsu, Tetsuo Adachi, Masataka Kato, Keiichi Haraguchi
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Publication number: 20050164442Abstract: An AND flash memory of the type wherein a memory cell is constituted of n-type semiconductor regions (a source and a drain) formed in a p-type well of a semiconductor substrate and three gates (including a floating gate, a control gate and a selective gate) is manufactured. In the manufacture, arsenic (As) is introduced into a p-type well in the vicinity of one of side walls of the selective gate to form n-type semiconductor regions (a source and a drain). Thereafter, to cope with a drain disturb problem, the substrate is thermally treated by use of an ISSG (In-Situ Steam Generation) oxidation method so that a first gate,insulating film disposed in the vicinity of one of side walls, at which the n-type semiconductor regions have been formed, is formed thick.Type: ApplicationFiled: January 18, 2005Publication date: July 28, 2005Inventors: Kenji Kanamitsu, Takashi Moriyama, Naohiro Hosoda, Keiichi Haraguchi, Tetsuo Adachi
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Publication number: 20040038492Abstract: The present invention provides a technology which allows the improvement of the capacitor capacitance per unit area, and a technology which allows the simplification of a manufacturing process associated therewith. At least not less than one capacitor formation trench causing the uneven surface is formed on the surface of a capacitor formation region. As a result, the surface area of a capacitor is increased, which enables the improvement of the capacitance of the capacitor per unit area. Further, by forming the capacitor formation trench and an element formation trench formed in the surface of the semiconductor substrate are formed by the same step. As a result, it is possible to simplify the manufacturing process. Whereas, a dielectric film of the capacitor in the capacitor formation region and a high-voltage gate insulating film in a MISFET formation region are formed by the same step.Type: ApplicationFiled: April 8, 2003Publication date: February 26, 2004Inventors: Tsutomu Okazaki, Daisuke Okada, Yoshihiro Ikeda, Keisuke Tsukamoto, Tatsuya Fukumura, Shoji Shukuri, Keiichi Haraguchi, Koji Kishi
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Patent number: 6479215Abstract: A water-developable, photosensitive resin plate for letterpress printing which comprises a photosensitive resin layer and a protective film contacting therewith, wherein the protective film consists of at least two layers, of which one is a surface layer containing a resin having a water absorption of 5% by weight or less and the other is an intermediate layer containing a water-soluble resin in contact with the photosensitive resin layer.Type: GrantFiled: May 26, 2000Date of Patent: November 12, 2002Assignee: Asahi Kasei Kabushiki KaishaInventors: Keiichi Haraguchi, Katsuya Nakano
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Publication number: 20020034706Abstract: A water-developable, photosensitive resin plate for letterpress printing which comprises a photosensitive resin layer and a protective film contacting therewith, wherein the protective film consists of at least two layers, of which one is a surface layer containing a resin having a water absorption of 5% by weight or less and the other is an intermediate layer containing a water-soluble resin in contact with the photosensitive resin layer.Type: ApplicationFiled: May 26, 2000Publication date: March 21, 2002Inventors: KEIICHI HARAGUCHI, KATSUYA NAKANO
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Patent number: 5332910Abstract: A semiconductor light-emitting device includes a plurality of semiconductor rods, each of which has a pn junction. The semiconductor rods are formed on a semiconductor substrate such that the plurality of semiconductor rods are arranged at a distance substantially equal to an integer multiple of the wavelength of light emitted from the semiconductor rod. With such devices, various novel optical devices such as a micro-cavity laser of which the threshold current is extremely small and a coherent light-emitting device having no threshold value can be realized.Type: GrantFiled: November 30, 1993Date of Patent: July 26, 1994Assignee: Hitachi, Ltd.Inventors: Keiichi Haraguchi, Kenji Hiruma, Kensuke Ogawa, Toshio Katsuyama, Ken Yamaguchi, Toshiyuki Usagawa, Masamits Yazawa, Toshiaki Masuhara, Gerard P. Morgan, Hiroshi Kakibayashi