Patents by Inventor Hirofumi Nakagawa

Hirofumi Nakagawa 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: 20190384213
    Abstract: A fixing device includes: a fixing member that heats a toner image formed on a recording sheet in order to fix the toner image on the recording sheet; a pressurizing member that nips the recording sheet together with the fixing member to pressurize the toner image on the recording sheet; a heater that heats the pressurizing member; and a hardware processor that controls a heating temperature of the pressurizing member by the heater, wherein the hardware processor acquires setting of glossiness of the toner image and controls the heating temperature to be higher as the glossiness in the setting is lower.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 19, 2019
    Inventors: CHIAKI YAMADA, NAOKI YOSHIE, HIROFUMI NAKAGAWA
  • Patent number: 10403197
    Abstract: A gate driver IC includes: N shift registers which generate a gate signal to be supplied to a display panel substrate, N being a natural number; (N+k) power supply terminals (PA1 to PD1, Pa1, and Pc1) for power supply from outside, k being a natural number; and (N+k) internal lines connected to the (N+k) power supply terminals, wherein N internal lines among the (N+k) internal lines connect, one-to-one, N power supply terminals among the (N+k) power supply terminals and the N shift registers, and k internal lines other than the N internal lines among the (N+k) internal lines connect, one-to-one, k power supply terminals other than the N power supply terminals among the (N+k) power supply terminals and k internal lines selected from among the N internal lines.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: September 3, 2019
    Assignee: JOLED INC.
    Inventor: Hirofumi Nakagawa
  • Publication number: 20190247576
    Abstract: An infusion set (1) includes: a first flow path (10a) having a first connector (11a) and a downstream connector (19); a first open/close valve (12a), a first liquid surface sensor (13a), a second liquid surface sensor (13b), a drip chamber (14), and a variable valve (17) that are provided in this order on the first flow path from the first connector side toward the downstream connector side; a droplet sensor (15) with which the drip chamber is provided; a second flow path (10b) having a second connector (11b); and a second open/close valve (12b) provided on the second flow path. The second flow path is in communication with a portion of the first flow path between the first liquid surface sensor and the second liquid surface sensor. The controller is configured to control the first and second open/close valves and the variable valves based on signals from the first and second liquid surface sensors and the droplet sensor.
    Type: Application
    Filed: October 11, 2017
    Publication date: August 15, 2019
    Inventors: Tadashi OKIYAMA, Hirofumi NAKAGAWA, Masashi KANAI, Yoko HAMABE
  • Patent number: 10235938
    Abstract: A gate driver IC (i.e., gate driver circuit), when set to a first mode by a logic signal of the terminal FNC*, shifts data in the gate driver IC in synchronization with one clock cycle of a clock inputted to the terminal CLK** (clock input terminal), and outputs a selection voltage or a non-selection voltage based on a data position in the gate driver IC; and when set to a second mode by a logic signal of the terminal FNC*, shifts data in the gate driver IC in synchronization with n clock cycles (n is an integer of at least 2) of a clock inputted to the terminal CLK**, and outputs the selection voltage or the non-selection voltage based on the data position in the gate driver IC.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: March 19, 2019
    Assignee: JOLED INC.
    Inventors: Hiroshi Takahara, Hirofumi Nakagawa
  • Patent number: 10043454
    Abstract: A source driver circuit is provided that supplies, to each of pixels arranged in a matrix, an electrical signal corresponding to a pixel signal. The source driver circuit includes a reference voltage generating unit, which includes a plurality of resistors connected in series, and a resistor, for gradation voltage generation that divides an input voltage into voltages of magnitudes. The source driver circuit also includes a gradation voltage generating circuit, which is connected between the plurality of resistors and is also connected between the plurality of resistors and the resistor for gradation voltage generation, that includes an offset-canceling amplifier. The offset-canceling amplifier alternates between an offset extraction state, in which an offset voltage of the offset-canceling amplifier is extracted, and a buffer output state, in which the offset voltage is added to the pixel signal and outputted.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: August 7, 2018
    Assignee: JOLED INC.
    Inventor: Hirofumi Nakagawa
  • Patent number: 9953577
    Abstract: A gate drive integrated circuit includes: clock terminals; a bidirectional buffer that is located between the clock terminals and controls the input-output direction of a clock signal; a connection mode control terminal that receives a connection mode control signal; and a pair of signal direction control terminals that receive a signal direction control signal, wherein the bidirectional buffer fixes the input-output direction of the clock signal to one direction in the case where the logic state of the connection mode control signal is a first logic state, and switches the input-output direction of the clock signal depending on the logic state of the signal direction control signal in the case where the logic state of the connection mode control signal is a second logic state different from the first logic state.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: April 24, 2018
    Assignee: JOLED INC.
    Inventors: Hirofumi Nakagawa, Hiroshi Takahara
  • Patent number: 9823776
    Abstract: According to one embodiment, an electronic apparatus, includes a sensor-equipped display device includes a display device and a sensor configured to detect a contact or proximate position, a display driver configured to output an image display signal to the display device and to output a drive signal to the sensor, a detecting circuit configured to generate, based on the information from the sensor, raw data (Raw data) including three-dimensional information of coordinates of a position on the display device and a physical quantity at the coordinates, and an application processor configured to discriminate whether a part of the region in the display area should be further sensed or not, based on the raw data, and if the part of the region is further sensed, to output the range of the display device to be further sensed and the timing of driving the sensor to the display driver.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: November 21, 2017
    Assignee: Japan Display Inc.
    Inventors: Yoshitoshi Kida, Jouji Yamada, Hirofumi Nakagawa, Michio Yamamoto, Kohei Azumi, Makoto Hayashi, Hiroshi Mizuhashi, Kozo Ikeno
  • Publication number: 20170308207
    Abstract: According to one embodiment, an electronic apparatus includes a sensor-equipped display device including a display device and a sensor which outputs information for detecting a contact position on the display device, a display driver which outputs a driving signal to the sensor based on one setting table, an application processor which outputs a table selection signal specifying a setting table and a sensor setting signal specifying a driving method of the sensor to the display driver, and a sensing circuit which outputs a dataset including three-dimensional information of a coordinate of a position on the display device and a physical quantity at the coordinate to the application processor, and outputs a table selection request signal generated based on the table selection signal, and a control signal which controls driving timing of the sensor to the display driver, the control signal having generated based on the sensor setting signal.
    Type: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Applicant: Japan Display Inc.
    Inventors: Kohei AZUMI, Jouji YAMADA, Hirofumi NAKAGAWA, Michio YAMAMOTO, Makoto HAYASHI, Hiroshi MIZUHASHI, Kozo IKENO, Yoshitoshi KIDA
  • Patent number: 9783429
    Abstract: An object of the present invention is to provide a purification method to give dodecacarbonyl triruthenium (DCR) which serves as a raw material for chemical vapor deposition and does not cause the contamination of a thin film with impurities even when used to form a ruthenium thin film. The present invention relates to a method in which the dissolved oxygen concentration in the solvent is made 0.2 mg/L or less in at least a dissolution stage, and an organic ruthenium compound including DCR as a raw material for chemical vapor deposition is purified by a recrystallization method. The present invention allows a trace amount of impurities to be separated from DCR. When a ruthenium thin film is formed by use of DCR thus obtained, the formed film is hardly contaminated with impurities. Additionally, the purification method of the present invention is also applicable for recovering/purifying DCR after being used for the formation of a ruthenium thin film.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: October 10, 2017
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Hirofumi Nakagawa, Tasuku Ishizaka, Hirofumi Ishida, Akiko Kumakura
  • Patent number: 9773452
    Abstract: An EL display apparatus includes: gate driver ICs (i. e., gate driver circuits); a plurality of pixels; gate signal lines each transmit a selection voltage for selecting a pixel from the pixels and non-selection voltage for placing a pixel in a non-selection state; and TCON. The pixels each include: a driving transistor; an EL element; a first switching transistor; and a second switching transistor. The gate driver ICs each include scanning and outputting buffer circuits which are connected to TCON to which an output signal of each of the scanning and outputting buffer circuits is inputted.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: September 26, 2017
    Assignee: JOLED INC.
    Inventors: Masaru Nishimura, Toshiyuki Kato, Hirofumi Nakagawa
  • Patent number: 9773464
    Abstract: According to one embodiment, a touch detection device includes a plurality of drive electrodes, a plurality of detection electrodes, a display driver which performs a touch scanning drive by supplying a touch drive signal to a target drive electrode to be driven, and a touch driver which transmits and receives a signal to and from the display driver, wherein at least one of the number of pulses of the drive synchronizing signal and a pulse width of each of the pulses of the drive synchronizing signal is determined based on the signal received from the display driver.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: September 26, 2017
    Assignee: Japan Display Inc.
    Inventors: Kohei Azumi, Hirofumi Nakagawa, Hiroshi Mizuhashi, Makoto Hayashi
  • Publication number: 20170263185
    Abstract: A source driver circuit which supplies, to each of pixels arranged in a matrix, an electrical signal corresponding to a pixel signal, the source driver circuit including: a reference voltage generating unit including a plurality of resistors connected in series; a resistor for gradation voltage generation which divides an input voltage into voltages of magnitudes; and a gradation voltage generating circuit which is connected between the plurality of resistors and between the plurality of resistors and the resistor for gradation voltage generation, and includes an offset-canceling amplifier, wherein the offset-canceling amplifier alternates between an offset extraction state in which an offset voltage of the offset-canceling amplifier is extracted and a buffer output state in which the offset voltage is added to the pixel signal and outputted.
    Type: Application
    Filed: September 2, 2015
    Publication date: September 14, 2017
    Applicant: JOLED INC.
    Inventor: Hirofumi NAKAGAWA
  • Patent number: 9746949
    Abstract: According to one embodiment, an electronic device includes a display device includes a plurality of first electrodes arranged in a matrix form, second electrodes opposite to the first electrodes, the second electrodes including a plurality of electrode patterns extending in a first direction and aligned in a second direction to cross the first direction, and third electrodes opposite to the second electrodes, the third electrodes including a plurality of electrode patterns extending in the second direction and aligned in the first direction, a display driver applying a sensor drive signal to the second electrodes, a detection circuit transmitting a detection data including physical quantity data detected from the plurality of electrode patterns of the third electrodes at each time when the sensor drive signal is applied to the second electrodes, and an application processor processing the detection data received from the detection circuit.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: August 29, 2017
    Assignee: Japan Display Inc.
    Inventors: Michio Yamamoto, Jouji Yamada, Hirofumi Nakagawa, Kohei Azumi, Makoto Hayashi, Hiroshi Mizuhashi, Kozo Ikeno, Yoshitoshi Kida
  • Patent number: 9740395
    Abstract: According to one embodiment, an electronic apparatus includes a sensor-integrated display device integrally including a display surface and a sensor surface, a data transfer device, an image data generation module, and a processing module. The data transfer device is configured to generate and output three-dimensional information. The image data generation module is configured to generate three-dimensional image data at a plurality of sensing points on the sensor surface based on the three-dimensional information. The processing module is configured to analyze an operation content of a conductor above the sensor surface based on the image data.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: August 22, 2017
    Assignee: Japan Display Inc.
    Inventors: Jouji Yamada, Hirofumi Nakagawa, Michio Yamamoto, Kohei Azumi, Makoto Hayashi, Hiroshi Mizuhashi, Kozo Ikeno, Yoshitoshi Kida
  • Patent number: 9727180
    Abstract: According to one embodiment, an electronic apparatus includes a sensor-equipped display device including a display device and a sensor which outputs information for detecting a contact position on the display device, a display driver which outputs a driving signal to the sensor based on one setting table, an application processor which outputs a table selection signal specifying a setting table and a sensor setting signal specifying a driving method of the sensor to the display driver, and a sensing circuit which outputs a dataset including three-dimensional information of a coordinate of a position on the display device and a physical quantity at the coordinate to the application processor, and outputs a table selection request signal generated based on the table selection signal, and a control signal which controls driving timing of the sensor to the display driver, the control signal having generated based on the sensor setting signal.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: August 8, 2017
    Assignee: Japan Display Inc.
    Inventors: Kohei Azumi, Jouji Yamada, Hirofumi Nakagawa, Michio Yamamoto, Makoto Hayashi, Hiroshi Mizuhashi, Kozo Ikeno, Yoshitoshi Kida
  • Publication number: 20170115815
    Abstract: According to one embodiment, an electronic apparatus, includes a sensor-equipped display device includes a display device and a sensor configured to detect a contact or proximate position, a display driver configured to output an image display signal to the display device and to output a drive signal to the sensor, a detecting circuit configured to generate, based on the information from the sensor, raw data (Raw data) including three-dimensional information of coordinates of a position on the display device and a physical quantity at the coordinates, and an application processor configured to discriminate whether a part of the region in the display area should be further sensed or not, based on the raw data, and if the part of the region is further sensed, to output the range of the display device to be further sensed and the timing of driving the sensor to the display driver.
    Type: Application
    Filed: January 4, 2017
    Publication date: April 27, 2017
    Applicant: Japan Display Inc.
    Inventors: Yoshitoshi KIDA, Jouji YAMADA, Hirofumi NAKAGAWA, Michio YAMAMOTO, Kohei AZUMI, Makoto HAYASHI, Hiroshi MIZUHASHI, Kozo IKENO
  • Publication number: 20170107118
    Abstract: An object of the present invention is to provide a purification method to give dodecacarbonyl triruthenium (DCR) which serves as a raw material for chemical vapor deposition and does not cause the contamination of a thin film with impurities even when used to form a ruthenium thin film. The present invention relates to a method in which the dissolved oxygen concentration in the solvent is made 0.2 mg/L or less in at least a dissolution stage, and an organic ruthenium compound including DCR as a raw material for chemical vapor deposition is purified by a recrystallization method. The present invention allows a trace amount of impurities to be separated from DCR. When a ruthenium thin film is formed by use of DCR thus obtained, the formed film is hardly contaminated with impurities. Additionally, the purification method of the present invention is also applicable for recovering/purifying DCR after being used for the formation of a ruthenium thin film.
    Type: Application
    Filed: June 2, 2015
    Publication date: April 20, 2017
    Inventors: Hirofumi NAKAGAWA, Tasuku ISHIZAKA, Hirofumi ISHIDA, Akiko KUMAKURA
  • Publication number: 20170083158
    Abstract: A sensor-integrated display panel including an operation surface for performing an input operation and an image display surface which are formed integrally with a sensor as one piece. A data transfer device supplies the sensor-integrated display panel with a drive signal for driving the sensor and outputs sensing data corresponding to a potential of a sensor signal output from the sensor. A contact electrode is provided in a frame formed around the sensor-integrated display panel to vary the potential of the sensor signal when a conductor touches or does not touch to the frame. An application executing device receives and analyzes the sensing data and generates a signal to select an operating function in accordance with an analysis result.
    Type: Application
    Filed: November 29, 2016
    Publication date: March 23, 2017
    Applicant: Japan Display Inc.
    Inventors: Makoto HAYASHI, Jouji YAMADA, Hirofumi NAKAGAWA, Michio YAMAMOTO, Kohei AZUMI, Hiroshi MIZUHASHI, Kozo IKENO, Yoshitoshi KIDA
  • Publication number: 20170076664
    Abstract: A gate driver IC includes: N shift registers which generate a gate signal to be supplied to a display panel substrate, N being a natural number; (N+k) power supply terminals (PA1 to PD1, Pa1, and Pc1) for power supply from outside, k being a natural number; and (N+k) internal lines connected to the (N+k) power supply terminals, wherein N internal lines among the (N+k) internal lines connect, one-to-one, N power supply terminals among the (N+k) power supply terminals and the N shift registers, and k internal lines other than the N internal lines among the (N+k) internal lines connect, one-to-one, k power supply terminals other than the N power supply terminals among the (N+k) power supply terminals and k internal lines selected from among the N internal lines.
    Type: Application
    Filed: December 24, 2014
    Publication date: March 16, 2017
    Applicant: JOLED INC.
    Inventor: Hirofumi NAKAGAWA
  • Patent number: 9576549
    Abstract: According to one embodiment, an electronic apparatus, includes a sensor-equipped display device includes a display device and a sensor configured to detect a contact or proximate position, a display driver configured to output an image display signal to the display device and to output a drive signal to the sensor, a detecting circuit configured to generate, based on the information from the sensor, raw data (Raw data) including three-dimensional information of coordinates of a position on the display device and a physical quantity at the coordinates, and an application processor configured to discriminate whether a part of the region in the display area should be further sensed or not, based on the raw data, and if the part of the region is further sensed, to output the range of the display device to be further sensed and the timing of driving the sensor to the display driver.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: February 21, 2017
    Assignee: Japan Display Inc.
    Inventors: Yoshitoshi Kida, Jouji Yamada, Hirofumi Nakagawa, Michio Yamamoto, Kohei Azumi, Makoto Hayashi, Hiroshi Mizuhashi, Kozo Ikeno