Patents by Inventor Tetsuya Ueno

Tetsuya Ueno 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).

  • Patent number: 11094254
    Abstract: The present invention discloses a current-driven display device employing an internal compensation scheme and capable of displaying a favorable image with no occurrence of a bright point not included in the original display content. A voltage Vg at a gate terminal of a drive transistor M1 is initialized in a pixel circuit 15 of an organic EL display device before a voltage of a data signal line Dj is written to a holding capacitor C1 via the drive transistor M1 in a diode-connected state. At this time, an initialization voltage Vini is supplied to the gate terminal via a first initialization transistor M4 and a threshold compensation transistor M3. In this manner, a path for initializing the gate terminal of the drive transistor M1 is formed by the first initialization transistor M4 and the threshold compensation transistor M3 connected in series to each other, thereby preventing a voltage reduction at the gate terminal due to leakage current in an off-state transistor.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: August 17, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Tetsuya Ueno
  • Publication number: 20210134232
    Abstract: The present disclosure discloses a current-driven display device that uses an internal compensation method and can display a good-quality image with no bright dots that are not included in intended display content. In a pixel circuit of an organic EL display device, a voltage of a gate terminal of a drive transistor is initialized before the voltage of a data signal line is written to a holding capacitor via the drive transistor in a diode-connected state. A drain terminal of a first initialization transistor is connected to an anode electrode of the organic EL element in another pixel circuit adjacent to the drain terminal in a scanning signal line extension direction. In a reset period, a path for applying an initialization voltage to the gate terminal is formed by a second initialization transistor of the other pixel circuit, an initialization connecting line, and the first initialization transistor of the pixel circuit.
    Type: Application
    Filed: March 29, 2018
    Publication date: May 6, 2021
    Inventor: TETSUYA UENO
  • Publication number: 20210110769
    Abstract: The present disclosure discloses a current-driven display device that uses an internal compensation method and can display a good-quality image with no bright dots that are not included in intended display content. In a pixel circuit of an organic EL display device, a voltage of a gate terminal of a drive transistor is initialized before the voltage of a data signal line is written to a holding capacitor via the diode-connected drive transistors. At this time, an initialization voltage is applied to the gate terminal via a display element initialization transistor, a second light emission control transistor, and a threshold compensation transistor. By initializing the gate terminal with a configuration not including an initialization transistor provided between the gate terminal and an initialization voltage supply line as in the related art, voltage drop at the gate terminal due to leakage current of the transistor in an off state is suppressed.
    Type: Application
    Filed: March 28, 2018
    Publication date: April 15, 2021
    Inventor: TETSUYA UENO
  • Patent number: 10950183
    Abstract: The present application discloses an organic EL display device adopting the SSD method, which enables sufficient charging with a data voltage and sufficient internal compensation in a pixel circuit even in a case that a display image has a higher resolution. There are provided m demultiplexers corresponding to m sets of data signal line groups, each of which is a set including k data signal lines (in this case, k=3). Each demultiplexer turns selection control signals to a low level (active) during a rest period before a scanning signal line is selected. In this case, a white voltage is supplied as a reset voltage from a data-side drive circuit to each data signal line via each demultiplexer. After that, each demultiplexer sequentially turns the selection control signals to an active state for a predetermined period such that the select control signal turns to the active state during the select period for the scanning signal line.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: March 16, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Ueno, Asahi Yamato
  • Publication number: 20210056901
    Abstract: The present invention discloses a current-driven display device employing an internal compensation scheme and capable of displaying a favorable image with no occurrence of a bright point not included in the original display content. A voltage Vg at a gate terminal of a drive transistor M1 is initialized in a pixel circuit 15 of an organic EL display device before a voltage of a data signal line Dj is written to a holding capacitor C1 via the drive transistor M1 in a diode-connected state. At this time, an initialization voltage Vini is supplied to the gate terminal via a first initialization transistor M4 and a threshold compensation transistor M3. In this manner, a path for initializing the gate terminal of the drive transistor M1 is formed by the first initialization transistor M4 and the threshold compensation transistor M3 connected in series to each other, thereby preventing a voltage reduction at the gate terminal due to leakage current in an off-state transistor.
    Type: Application
    Filed: March 28, 2018
    Publication date: February 25, 2021
    Inventor: TETSUYA UENO
  • Publication number: 20210043978
    Abstract: An all-solid-state secondary battery includes: a positive electrode active material layer; a negative electrode active material layer; and a solid electrolyte layer located between the positive electrode active material layer and the negative electrode active material layer, wherein at least one of the positive electrode active material layer and the negative electrode active material layer contains lithium vanadium phosphate, the solid electrolyte layer contains lithium zirconium phosphate, and between the positive electrode active material layer or the negative electrode active material layer containing lithium vanadium phosphate and the solid electrolyte layer, a first intermediate layer, which contains lithium vanadium phosphate containing zirconium and is located on the side of the positive electrode active material layer or the negative electrode active material layer, and a second intermediate layer, which contains lithium zirconium phosphate containing vanadium and is located on the side of the solid
    Type: Application
    Filed: March 22, 2019
    Publication date: February 11, 2021
    Applicant: TDK CORPORATION
    Inventors: Keiko TAKEUCHI, Tetsuya UENO, Gakuho ISOMICHI
  • Publication number: 20210036362
    Abstract: An all-solid-state battery includes a positive electrode current collector layer; a positive electrode active material layer; a negative electrode current collector layer; a negative electrode active material layer; a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer and formed of a solid electrolyte; and at least one of a first intermediate layer formed between the positive electrode current collector layer and the positive electrode active material layer, and a second intermediate layer formed between the negative electrode current collector layer and the negative electrode active material layer.
    Type: Application
    Filed: March 27, 2019
    Publication date: February 4, 2021
    Applicant: TDK CORPORATION
    Inventors: Tetsuya UENO, Gakuho ISOMICHI, Keiko TAKEUCHI
  • Publication number: 20210020112
    Abstract: A first region and a second region do not include sub-pixel circuits. The second region is surrounded by a display area. The first region is surrounded by the second region. When viewed orthogonally to the display area, a plurality of signal lines are provided across the second region. The signal lines include at least either two or more of scanning signal lines, or two or more of data signal lines. The signal lines across the second region run out of an edge of the first region.
    Type: Application
    Filed: April 10, 2018
    Publication date: January 21, 2021
    Inventor: TETSUYA UENO
  • Publication number: 20210005139
    Abstract: The present disclosure discloses a current-driven display device that uses an internal compensation method and can display a good-quality image with no bright dots that are not included in intended display content. In a pixel circuit of an organic EL display device, a gate voltage of a drive transistor is initialized before the voltage of a data signal line is written to a holding capacitor via the diode-connected drive transistor. A first initialization voltage line for initialization of the gate voltage and a second initialization voltage line for initialization of an anode voltage of the organic EL element are connected to the pixel circuit. In the initialization of the gate voltage, a voltage of the first initialization voltage line that is higher than the voltage of the second initialization voltage line is provided to the gate terminal of the drive transistor via the first initialization transistor.
    Type: Application
    Filed: March 28, 2018
    Publication date: January 7, 2021
    Inventor: TETSUYA UENO
  • Publication number: 20200402457
    Abstract: An object of the disclosure is to achieve a current-driven display device able to compensate for a variation in threshold voltage of a drive transistor without causing a variation in luminance. A pixel circuit includes a light-emitting element, a drive transistor, a power supply control transistor, a light emission control transistor, a first writing control transistor, a threshold voltage compensation transistor, a second writing control transistor, an initialization transistor, and a data-holding capacitor. During a data writing period, a scanning signal is active, an initialization voltage is supplied to a first electrode of the data-holding capacitor via the drive transistor, and a data voltage is supplied to a second electrode of the data-holding capacitor.
    Type: Application
    Filed: March 19, 2018
    Publication date: December 24, 2020
    Inventor: TETSUYA UENO
  • Publication number: 20200381774
    Abstract: An all-solid-state battery includes a positive electrode layer including a positive electrode current collector layer and a positive electrode active material layer provided on the positive electrode current collector layer, a negative electrode layer including a negative electrode current collector layer and a negative electrode active material layer provided on the negative electrode current collector layer, and a solid electrolyte layer which is arranged between the positive electrode layer and the negative electrode layer and contains a solid electrolyte, wherein the all-solid-state battery includes a power storage unit in which the positive electrode layer and the negative electrode layer face each other with the solid electrolyte layer therebetween and an exterior unit, and wherein the exterior unit has an ion conductivity of 10?2 S/cm or less.
    Type: Application
    Filed: March 19, 2019
    Publication date: December 3, 2020
    Applicant: TDK CORPORATION
    Inventors: Tetsuya UENO, Gakuho ISOMICHI, Taisuke MASUKO
  • Patent number: 10854917
    Abstract: An active material layer containing a compound represented by a general formula (1): LiaVbAlcTidPeO12 (1), where a, b, c, d, and e in the general formula (1) are numbers satisfying 0.5?a?3.0, 1.20<b?2.00, 0.01?c<0.06, 0.01?d<0.60, and 2.80?e?3.20; and a solid electrolyte layer containing a compound represented by a general formula (2): LifVgAlhTiiPjO12 (2), where f, g, h, i, and j in general formula (2) are numbers satisfying 0.5?f?3.0, 0.01?g<1.00, 0.09<h?0.30, 1.40<i?2.00, and 2.80?j?3.20.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: December 1, 2020
    Assignee: TDK CORPORATION
    Inventors: Hiroshi Sato, Masahiro Oishi, Takeo Tsukada, Gakuho Isomichi, Tetsuya Ueno
  • Patent number: 10770522
    Abstract: An EL device includes a display panel and an imaging element, and the display panel includes a panel substrate and an EL layer, and an imaging hole for guiding light from a subject to the imaging element is formed in the display area to straddle a plurality of scanning signal lines and a plurality of data signal lines when viewed from a direction perpendicular to a display area.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: September 8, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Tetsuya Ueno
  • Publication number: 20200274194
    Abstract: The present invention aims to provide an all-solid-state lithium ion secondary battery having a high reliability which does not have a decrease in battery capacity due to absorption of moisture in the air. The all-solid-state lithium ion secondary battery is provided with a battery body having an electrolyte layer between a positive electrode layer and a negative electrode layer, a pair of terminal electrodes respectively connected to the positive electrode layer and the negative electrode layer at both end portions of the battery body, and a moisture-proof layer disposed on surfaces excluding the surfaces to be the terminal electrodes, wherein the moisture-proof layer contains a cured product of a composition containing a polymer compound and metal compound particles.
    Type: Application
    Filed: March 28, 2018
    Publication date: August 27, 2020
    Applicant: TDK CORPORATION
    Inventors: Hiroaki TAKAHATA, Hisaji OYAKE, Masayuki MUROI, Tetsuya UENO
  • Publication number: 20200262667
    Abstract: A heater of a sheet feeding device warms up a bundle of sheets set in a sheet cassette to dehumidify it. A first terminal makes contact with the topmost sheet. A second terminal makes contact with the bottommost sheet. When judging the necessity for dehumidification, a controller determines a judging resistance value based on the magnitude of a current passing through the bundle of sheets with a detection voltage applied to the first terminal. When the judging resistance value is equal to or lower than a threshold value, the controller operates the heater. When the determined judging resistance value is higher than a threshold value, the controller does not operate the heater.
    Type: Application
    Filed: January 21, 2020
    Publication date: August 20, 2020
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Tetsuya UENO
  • Publication number: 20200075994
    Abstract: A solid electrolyte, in which an occupied impurity level that is formed by a part of elements contained in a mobile ion-containing material being substituted and that is occupied by electrons is included in a band gap of the mobile ion-containing material, and an amount of charge retention per composition formula of the occupied impurity level is equal to or greater than an amount of charge retention of mobile ions per composition formula of the mobile ion-containing material.
    Type: Application
    Filed: March 29, 2018
    Publication date: March 5, 2020
    Applicant: TDK CORPORATION
    Inventors: Takashi SASAKI, Tetsuya UENO, Gakuho ISOMICHI
  • Patent number: 10573710
    Abstract: In the display device, the plurality of display bodies are jointed together and fixed to the elongated flexible circuit board.
    Type: Grant
    Filed: May 29, 2017
    Date of Patent: February 25, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tetsuya Ueno, Ryoh Araki, Asahi Yamato
  • Publication number: 20200035168
    Abstract: The present application discloses an organic EL display device adopting the SSD method, which enables sufficient charging with a data voltage and sufficient internal compensation in a pixel circuit even in a case that a display image has a higher resolution. There are provided m demultiplexers corresponding to m sets of data signal line groups, each of which is a set including k data signal lines (in this case, k=3). Each demultiplexer turns selection control signals to a low level (active) during a rest period before a scanning signal line is selected. In this case, a white voltage is supplied as a reset voltage from a data-side drive circuit to each data signal line via each demultiplexer. After that, each demultiplexer sequentially turns the selection control signals to an active state for a predetermined period such that the select control signal turns to the active state during the select period for the scanning signal line.
    Type: Application
    Filed: March 24, 2017
    Publication date: January 30, 2020
    Inventors: Tetsuya UENO, Asahi YAMATO
  • Publication number: 20200020976
    Abstract: A solid electrolyte according to an embodiment includes a lithium-containing phosphoric acid compound with a cubic crystal structure.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 16, 2020
    Applicant: TDK CORPORATION
    Inventors: Gakuho ISOMICHI, Tetsuya UENO
  • Publication number: 20200020978
    Abstract: This solid electrolyte is a zirconium phosphate-based solid electrolyte in which a part of phosphorous or zirconium that is contained in the solid electrolyte is substituted with an element with a variable valence.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 16, 2020
    Applicant: TDK CORPORATION
    Inventors: Takashi SASAKI, Tetsuya UENO, Gakuho ISOMICHI