Patents by Inventor Yongfang Li

Yongfang Li 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).

  • Publication number: 20210036250
    Abstract: The present disclosure provides a cathode interface modification material composition, a preparation method and use thereof. In the present disclosure, a uniformly dispersed novel cathode interface modification material composition is obtained by adding a carbon nanomaterial to a cathode interfacial material and dispersing the same in a polar solvent. The cathode interface modification material composition of the present disclosure and the cathode interface modification layer prepared using the cathode interface modification material composition of the present disclosure can be used for the fabrication of various types of organic photoelectric devices.
    Type: Application
    Filed: November 18, 2019
    Publication date: February 4, 2021
    Inventors: Menglan LV, Xiwen CHEN, Yongfang LI
  • Publication number: 20200300981
    Abstract: According to one embodiment, an optical deflection element includes a substrate and three or more electrodes. The substrate has an incidence plane which the laser light enters and an emission plane from which the laser light exits. The three or more electrodes are arranged on the substrate at first intervals in a first direction. Electrodes allow a surface acoustic wave having a first wavelength to be generated in the substrate by applying a voltage thereto. Wiring is provided such that a voltage is selectively applied to the electrodes at an interval between at least two electrodes. The electrodes allow a surface acoustic wave having a second wavelength to be generated in the substrate by applying a voltage selectively at second intervals.
    Type: Application
    Filed: August 30, 2019
    Publication date: September 24, 2020
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi OHNO, Yongfang LI, Hideaki OKANO
  • Publication number: 20200292505
    Abstract: According to one embodiment, a sensor module includes a sensor and a diagnosis circuit. The sensor includes piezoelectric transducers and switches. The piezoelectric transducers have different resonance frequencies. The switches are provided to correspond to the piezoelectric transducers, respectively. Each of the switches outputs an output signal corresponding to a voltage generated by an inverse piezoelectric effect of a corresponding piezoelectric transducer of the piezoelectric transducers. The diagnosis circuit diagnoses, based on a difference in pattern of the output signal, whether vibration has newly occurred in the sensor, and switch an output destination of the output signal of the sensor according to a result of the diagnosis.
    Type: Application
    Filed: August 30, 2019
    Publication date: September 17, 2020
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yongfang Li, Takahiro Omori, Takashi Usui, Osamu Nishimura, Kazuo Watabe
  • Publication number: 20200295250
    Abstract: According to one embodiment, a sensor module includes at least one sensor and at least one switch. The sensor includes a first piezoelectric element. The first piezoelectric element includes a first electrode. The first piezoelectric element is set with a resonance frequency to resonate at a vibration frequency of a detection target. The switch includes a second piezoelectric element. The second piezoelectric element includes a second electrode connected to the first electrode and a third electrode electrically separated from the second electrode.
    Type: Application
    Filed: August 30, 2019
    Publication date: September 17, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yongfang LI, Takahiro Omori, Takashi Usui, Osamu Nishimura, Kazuo Watabe
  • Publication number: 20200191687
    Abstract: A molecular detection apparatus includes a detector. The detector includes: a vibrator having a piezoelectric member that has a first surface and a second surface, a first electrode connected to the first surface, a second electrode connected to the second surface, and a third electrode connected to the second surface and disconnected from the second electrode; a sensitive film overlapping at least one part of the second electrode and at least one part of the third electrode and configured to change a vibration frequency of the vibrator in response to an interaction with target molecules; and a detection electrode to detect the changed vibration frequency.
    Type: Application
    Filed: September 5, 2019
    Publication date: June 18, 2020
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yasushi SHINJO, Yongfang LI, Hirohisa MIYAMOTO, Yutaka NAKAI, Reiko YOSHIMURA
  • Publication number: 20190360880
    Abstract: A vibration sensor according to an embodiment includes a laminated body. The laminated body includes a support layer a first end of which is fixed; a piezoelectric layer on the support layer; an insulating layer disposed between the support layer and the piezoelectric layer; a common electrode disposed on a first principal surface of the piezoelectric layer; a first sensing electrode disposed in a first area on a second principal surface of the piezoelectric layer on the side opposite to the first principal surface; and a drive electrode disposed in a second area different from the first area on the second principal surface of the piezoelectric layer. The first area is located near the first end of the support layer.
    Type: Application
    Filed: February 27, 2019
    Publication date: November 28, 2019
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Yongfang LI
  • Patent number: 10372036
    Abstract: A edge electrode mold according to an embodiment includes a base having a first main surface and one or more protruding structures disposed on the first main surface. The protruding structures include a protrusion projecting from the first main surface of the base, an edge electrode disposed at the protrusion, and an electrolytic hydrophobic film having electrolytic property and hydrophobicity disposed on the upper end surface of a protruding shape including the protrusion and the edge electrode.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: August 6, 2019
    Assignees: Kabushiki Kaisha Toshiba, The University of Tokyo
    Inventors: Yongfang Li, Hiroyuki Fujita
  • Publication number: 20180143530
    Abstract: A edge electrode mold according to an embodiment includes a base having a first main surface and one or more protruding structures disposed on the first main surface. The protruding structures include a protrusion projecting from the first main surface of the base, an edge electrode disposed at the protrusion, a no an electrolytic hydrophobic film having electrolytic property and hydrophobicity disposed on the upper end surface of a protruding shape including the protrusion and the edge electrode.
    Type: Application
    Filed: August 31, 2017
    Publication date: May 24, 2018
    Applicants: Kabushiki Kaisha Toshiba, The University of Tokyo
    Inventors: Yongfang Li, Hiroyuki FUJITA
  • Patent number: 9957630
    Abstract: According to one embodiment, a pattern transfer mold includes a base body, first and second stacked bodies, first and second electrodes. The base body includes a base unit including a first surface, a first protrusion provided on the first surface and having a first side surface, and a second protrusion provided on the first surface, separated from the first protrusion, and having a second side surface opposing the first side surface. The first stacked body is provided on the first side surface, and includes first conductive layers and a first insulating layer. The second stacked body is provided on the second side surface, separated from the first stacked body, and includes second conductive layers and a second insulating layer. The first electrode is electrically connected to at least one of the first conductive layers. The second electrode is electrically connected to at least one of the second conductive layers.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: May 1, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yongfang Li, Ryoichi Inanami, Akiko Mimotogi, Takashi Sato, Masato Saito, Koichi Kokubun
  • Publication number: 20170283975
    Abstract: According to one embodiment, a pattern transfer device includes a substrate, a transfer unit and a controller. The transfer unit is configured to have electrodes and transfer a pattern corresponding to the electrodes with a voltage applied between the substrate and the electrodes. The controller is configured to control humidity between the substrate and the transfer unit.
    Type: Application
    Filed: September 12, 2016
    Publication date: October 5, 2017
    Inventor: Yongfang LI
  • Publication number: 20160118514
    Abstract: According to one embodiment, a solar cell includes a first electrode, a photoelectric conversion film, a second electrode, and a first electret. The photoelectric conversion film is provided on the first electrode. The photoelectric conversion film includes a first semiconductor layer and a second semiconductor layer. The first semiconductor layer is of a first conductivity type. The second semiconductor layer is of a second conductivity type and provided on the first semiconductor layer. The first semiconductor layer and the second semiconductor layer generate a built-in electric field. The second electrode is provided on the photoelectric conversion film. The first electret is arranged with the photoelectric conversion film in a stacking direction of the first semiconductor layer and the second semiconductor layer. The first electret generates an external electric field. The external electric field and the built-in electric field are oriented toward the same side.
    Type: Application
    Filed: October 22, 2015
    Publication date: April 28, 2016
    Inventor: Yongfang LI
  • Patent number: 9224415
    Abstract: According to one embodiment, a microprobe includes a supporting base, an insulating layer, and an electrode layer arrayed in a first direction in this order. A principal surface of the microprobe is formed in a second direction different from the first direction. A step is formed on at least the electrode layer on the principal surface, and the electrode layer is partitioned into a first area and a second area by the step.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: December 29, 2015
    Assignees: Kabushiki Kaisha Toshiba, The University of Tokyo
    Inventors: Yongfang Li, Yasushi Tomizawa, Akihiro Koga, Gen Hashiguchi, Masakazu Sugiyama
  • Patent number: 8988065
    Abstract: According to an embodiment, a microprobe includes a base and a lever. The base includes a first electrode provided on a surface thereof. The lever is supported by the base and includes a second electrode and a third electrode. The second electrode is connected between the first electrode and the third electrode. The third electrode is formed to project from the second electrode in a first direction in a main surface of the lever. A width of the third electrode in a second direction perpendicular to the first direction in the main surface defines a width of an electrical contact area when a scanning operation is performed by use of the third electrode in a third direction perpendicular to the main surface.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: March 24, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yongfang Li, Yasushi Tomizawa
  • Publication number: 20150021191
    Abstract: According to one embodiment, a pattern transfer mold includes a base body, first and second stacked bodies, first and second electrodes. The base body includes a base unit including a first surface, a first protrusion provided on the first surface and having a first side surface, and a second protrusion provided on the first surface, separated from the first protrusion, and having a second side surface opposing the first side surface. The first stacked body is provided on the first side surface, and includes first conductive layers and a first insulating layer. The second stacked body is provided on the second side surface, separated from the first stacked body, and includes second conductive layers and a second insulating layer. The first electrode is electrically connected to at least one of the first conductive layers. The second electrode is electrically connected to at least one of the second conductive layers.
    Type: Application
    Filed: July 18, 2014
    Publication date: January 22, 2015
    Inventors: Yongfang LI, Ryoichi INANAMI, Akiko MIMOTOGI, Takashi SATO, Masato SAITO, Koichi KOKUBUN
  • Publication number: 20140283230
    Abstract: According to an embodiment, a microprobe includes a base and a lever. The base includes a first electrode provided on a surface thereof. The lever is supported by the base and includes a second electrode and a third electrode. The second electrode is connected between the first electrode and the third electrode. The third electrode is formed to project from the second electrode in a first direction in a main surface of the lever. A width of the third electrode in a second direction perpendicular to the first direction in the main surface defines a width of an electrical contact area when a scanning operation is performed by use of the third electrode in a third direction perpendicular to the main surface.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 18, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yongfang Li, Yasushi Tomizawa
  • Patent number: 8331212
    Abstract: According to one embodiment, a MEMS memory microprobe includes a probe tip, a lever, and a base. The probe tip is arranged to oppose a recording medium and is brought into contact with the recording medium to perform recording or reproduction of information when a current or voltage is applied between them. In the probe tip, a plurality of electrodes used in the recording or reproduction and a plurality of support portions which form the probe tip together with the electrodes are alternately arranged, and the electrodes and the support portions form a single plane which opposes the recording medium.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: December 11, 2012
    Assignees: Kabushiki Kaisha Toshiba, The University of Tokyo
    Inventors: Yongfang Li, Yasushi Tomizawa, Gen Hashiguchi, Masakazu Sugiyama
  • Publication number: 20120230079
    Abstract: In one embodiment, an actuator has a movable member, a frame, and first and second electrodes. Each of the first electrodes has a pair of first and second planes perpendicular to a third direction which is orthogonal to the first and the second directions approximately. The second electrodes are provided alternately with the first electrode respectively and with a distance from the first electrode. Each of the second electrodes has a pair of third and fourth planes perpendicular to the third direction. The first and the second planes have a deviation in the third direction with respect to the third and the fourth planes, respectively. The amount of the deviation is larger than a maximum value of the amount of displacement of the movable member in the third direction. The amount of displacement is produced by gravity when a component of the gravity in the third direction is maximum.
    Type: Application
    Filed: September 19, 2011
    Publication date: September 13, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yongfang Li, Yasushi Tomizawa, Hiroaki Nakamura, Akihiro Koga
  • Publication number: 20120062213
    Abstract: According to one embodiment, a microprobe includes a supporting base, an insulating layer, and an electrode layer arrayed in a first direction in this order. A principal surface of the microprobe is formed in a second direction different from the first direction. A step is formed on at least the electrode layer on the principal surface, and the electrode layer is partitioned into a first area and a second area by the step.
    Type: Application
    Filed: March 25, 2011
    Publication date: March 15, 2012
    Inventors: Yongfang Li, Yasushi Tomizawa, Akihiro Koga, Gen Hashiguchi, Masakazu Sugiyama
  • Publication number: 20110194398
    Abstract: According to one embodiment, a MEMS memory microprobe includes a probe tip, a lever, and a base. The probe tip is arranged to oppose a recording medium and is brought into contact with the recording medium to perform recording or reproduction of information when a current or voltage is applied between them. In the probe tip, a plurality of electrodes used in the recording or reproduction and a plurality of support portions which form the probe tip together with the electrodes are alternately arranged, and the electrodes and the support portions form a single plane which opposes the recording medium.
    Type: Application
    Filed: January 28, 2011
    Publication date: August 11, 2011
    Inventors: Yongfang Li, Yasushi Tomizawa, Gen Hashiguchi, Masakazu Sugiyama
  • Publication number: 20110039104
    Abstract: Related are a copper indium sulfide nanoparticle and a preparation method thereof. Copper salts, indium salts and alkane thiol are added to a non-polar organic solvent, and then are heated with stirring under inert gas atmosphere to dissolve until a dark red colloidal solution is obtained. The obtained colloidal solution is cooled to room temperature, and then a polar solvent is added. The copper indium sulfide semiconductor nanoparticles are obtained through centrifugal settling. The obtained copper indium sulfide semiconductor nanoparticles could be further washed and vacuum dried to give copper indium sulfide semiconductor nanoparticle powders. The obtained copper indium sulfide semiconductor nanoparticles have an average particle size of 2 to 10 nm and an emission spectrum of 600 to 800 nm in the near infrared region, quantum efficiency being close to 10%. The yield of the present method is up to 90%.
    Type: Application
    Filed: March 6, 2009
    Publication date: February 17, 2011
    Applicant: BAYER TECHNOLOGY SERVICES GMBH
    Inventors: Haizheng Zhong, Yongfang Li