Patents by Inventor Toshiaki Fukushima
Toshiaki Fukushima 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: 9824645Abstract: According to one embodiment, a display device includes first, second, and third interconnects, switch elements, pixel electrodes, a display layer, first, and second color filters, and a controller. The first interconnects extend in a first direction and are arranged in a second direction. The second interconnects extend in the second direction and are arranged in the first direction. The switch elements are electrically connected to the first and second interconnects. The pixel electrodes are electrically connected to the switch elements. The third interconnects extend in the second direction and are arranged in the first direction. The display layer performs an optical operation of light emission or a change of an optical characteristic. The first color filters are of a first color. The second color filters of a second color have a higher visibility than the first color. The controller is electrically connected to the first, second, and third interconnects.Type: GrantFiled: May 11, 2015Date of Patent: November 21, 2017Assignee: Japan Display Inc.Inventors: Hayato Kurasawa, Hiroshi Mizuhashi, Toshiaki Fukushima
-
Patent number: 9798403Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a control circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The control circuit unit is provided in the peripheral region, and includes a first circuit unit including a third line connection line, and a third line switch. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. The first circuit unit is partially disposed between the drive element and the first substrate.Type: GrantFiled: May 12, 2015Date of Patent: October 24, 2017Assignee: Japan Display Inc.Inventors: Hiroshi Mizuhashi, Toshiaki Fukushima, Gen Koide, Yoshiyuki Kii
-
Patent number: 9792865Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.Type: GrantFiled: March 9, 2017Date of Patent: October 17, 2017Assignee: Japan Display Inc.Inventors: Gen Koide, Toshiaki Fukushima
-
Publication number: 20170285825Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The circuit unit is provided in the peripheral region, and is electrically connected to one of the second lines and one of the third lines. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. At least a portion of the circuit unit is disposed between the drive element and the first substrate.Type: ApplicationFiled: June 19, 2017Publication date: October 5, 2017Applicant: Japan Display Inc.Inventors: Hiroshi MIZUHASHI, Tadayoshi KATSUTA, Gen KOIDE, Toshiaki FUKUSHIMA
-
Publication number: 20170278472Abstract: According to one embodiment, a display device includes first interconnects, second interconnects, an electrode layer, pixel electrodes, a display layer and a controller. The first interconnects extend in a first direction and are arranged in a second direction. The second interconnects extend in the second direction and are arranged in the first direction. The electrode layer is aligned with a plane including the first and the second direction, and has openings. The second interconnects include a first signal line of a first color and a second signal line of the first color most proximal to the first signal line. The controller performs a first operation of supplying signals of a first polarity to the first and the second signal lines. The controller performs a second operation of supplying signals of a second polarity to the first and the second signal lines.Type: ApplicationFiled: June 14, 2017Publication date: September 28, 2017Applicant: Japan Display Inc.Inventors: Toshiaki FUKUSHIMA, Hayato Kurasawa, Hiroshi Mizuhashi
-
Patent number: 9746950Abstract: A display device includes a sensor, a display panel, and a plurality of electrodes for a touch sensor. The plurality of electrodes include drive electrodes and detection electrodes. The drive electrodes are also used as common electrodes for display, which are provided in the display panel. An image display operation of the display panel and a driving operation of the electrodes for the touch sensor are performed in a time sharing manner. In the driving operation of the electrodes for the touch sensor, a code division multiplexing (CDM) drive is performed in units of successive common electrodes, and a drive signal which synchronizes with the CDM drive is input to all common electrodes other than successive common electrodes subjected to the CDM drive.Type: GrantFiled: June 3, 2015Date of Patent: August 29, 2017Assignee: Japan Display Inc.Inventors: Toshiaki Fukushima, Koji Noguchi, Hiroshi Mizuhashi, Gen Koide, Tadayoshi Katsuta
-
Publication number: 20170220153Abstract: A display apparatus which can reduce a parasitic capacitance during driving of driving electrodes based on a self-capacitance detecting method is provided. The display apparatus includes: a plurality of connection wires which are formed in a peripheral area and are connected to a plurality of corresponding video signal lines; a video signal line selection circuit which is connected with a plurality of connection wires, selects at least one connection wire and supplies a signal to the video signal lines; self-capacitance detection wires which extend in a direction intersecting an extension direction of the connection wires and intersects the connection wires; common wires which electrically connect the self-capacitance detection wires and drive electrodes; and transistors which are provided between the self-capacitance detection wires and the common wires. Further, the self-capacitance detection wires extend between a display area and the video signal line selection circuit in a plan view.Type: ApplicationFiled: January 19, 2017Publication date: August 3, 2017Inventors: Gen KOIDE, Tadayoshi KATSUTA, Toshiaki FUKUSHIMA, Naoyuki OBINATA
-
Patent number: 9721519Abstract: According to one embodiment, a display device includes first interconnects, second interconnects, an electrode layer, pixel electrodes, a display layer and a controller. The first interconnects extend in a first direction and are arranged in a second direction. The second interconnects extend in the second direction and are arranged in the first direction. The electrode layer is aligned with a plane including the first and the second direction, and has openings. The second interconnects include a first signal line of a first color and a second signal line of the first color most proximal to the first signal line. The controller performs a first operation of supplying signals of a first polarity to the first and the second signal lines. The controller performs a second operation of supplying signals of a second polarity to the first and the second signal lines.Type: GrantFiled: April 20, 2015Date of Patent: August 1, 2017Assignee: Japan Display Inc.Inventors: Toshiaki Fukushima, Hayato Kurasawa, Hiroshi Mizuhashi
-
Publication number: 20170212624Abstract: A display apparatus includes a first pad electrically connected to the drive circuit, a voltage supply line having one end electrically connected to the first pad, a common wire electrically connected to the voltage supply line and the second electrode, a transistor formed between the voltage supply line and the common wire, and a branch wire being a part of the voltage supply line, extending from a branch section, and electrically connected to the first pad. Then, the branch section is located closer to a center of the insulating substrate than the first pad in a plan view.Type: ApplicationFiled: January 17, 2017Publication date: July 27, 2017Inventors: Tadayoshi KATSUTA, Toshiaki FUKUSHIMA, Naoyuki OBINATA, Gen KOIDE
-
Patent number: 9715295Abstract: According to one embodiment, a display device includes first and second substrate units, a display function layer, and a drive element. The first substrate unit includes a first substrate, a display unit, and a circuit unit. The first substrate has a first surface including a display region and a peripheral region. The display unit is provided in the display region, and includes first lines, second lines, switch elements, pixel electrodes, and third lines. The circuit unit is provided in the peripheral region, and is electrically connected to one of the second lines and one of the third lines. The second substrate unit includes a second substrate and fourth lines. The display function layer is provided between the first and second substrate units. The drive element is provided on the peripheral region. At least a portion of the circuit unit is disposed between the drive element and the first substrate.Type: GrantFiled: May 11, 2015Date of Patent: July 25, 2017Assignee: Japan Display Inc.Inventors: Hiroshi Mizuhashi, Tadayoshi Katsuta, Gen Koide, Toshiaki Fukushima
-
Publication number: 20170205945Abstract: To provide a liquid crystal display device with a touch detection function in which any drive method can be adopted.Type: ApplicationFiled: February 1, 2017Publication date: July 20, 2017Inventors: Hiroshi Mizuhashi, Koji Noguchi, Toshiaki Fukushima
-
Publication number: 20170186385Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.Type: ApplicationFiled: March 9, 2017Publication date: June 29, 2017Applicant: Japan Display Inc.Inventors: Gen KOIDE, Toshiaki FUKUSHIMA
-
Patent number: 9690259Abstract: Provided is an electronic timepiece, including: a step motor; a motor driver; a normal drive pulse generation circuit configured to output a normal drive pulse at a designated drive rank; a rotation detection pulse generation circuit configured to output a detection pulse; a rotation detection circuit which comprises at least a first detection mode determination circuit configured to conduct determination in a first detection mode and which is configured to detect rotation or non-rotation of a rotor; a rotation determination counter circuit configured to count a number of times that the rotation has been successively detected by the rotation detection circuit; a first detection mode determination counter circuit configured to count a number of times that a detection signal generated by the detection pulse becomes a predetermined detection pattern in the first detection mode; and a drive rank selection circuit configured to designate a drive rank of the normal drive pulse based on results of the counting conduType: GrantFiled: August 29, 2014Date of Patent: June 27, 2017Assignee: CITIZEN WATCH CO., LTD.Inventors: Yu Takyo, Shogo Sezaki, Toshiaki Fukushima, Daisuke Iri
-
Patent number: 9651841Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.Type: GrantFiled: March 11, 2016Date of Patent: May 16, 2017Assignee: Japan Display Inc.Inventors: Gen Koide, Toshiaki Fukushima
-
Patent number: 9594453Abstract: To provide a liquid crystal display device with a touch detection function in which any drive method can be adopted.Type: GrantFiled: June 17, 2015Date of Patent: March 14, 2017Assignee: Japan Display Inc.Inventors: Hiroshi Mizuhashi, Koji Noguchi, Toshiaki Fukushima
-
Patent number: 9529330Abstract: An oscillating stepping motor can reduce a required rotational angle of a rotor to drive a star wheel, reduce idle driving, cut the loss of energy required for the driving, reduce power consumption even in high-frequency driving, and stably operate. Two star wheels are located so that the tooth tips thereof are not engaged with each other. A rotor shaft includes a rotor pinion having two feed teeth at a certain aperture angle. One of the feed teeth feeds one of the driving wheels by oscillation of the rotor in one direction and the other of the feed teeth feeds the other of the driving wheels by the oscillation of the rotor in the other. The rotor then oscillates within a certain angle range, thereby sequentially rotating output gears in a certain direction by a certain angle.Type: GrantFiled: September 1, 2011Date of Patent: December 27, 2016Assignee: CITIZEN HOLDINGS CO., LTD.Inventors: Toshiaki Fukushima, Akira Shiota, Toshinari Maeda
-
Publication number: 20160357320Abstract: According to an aspect, a display device with a touch detection function includes a display panel and a touch panel. The touch panel includes first electrodes extending in one direction. The display panel includes second electrodes interesting with the first electrodes in planar view and serving as common electrodes that supply a common potential to pixels in a display area. The display panel also includes pixel signal lines and scanning signal lines interesting with each other in planar view. The pixel signal lines and the scanning signal lines are made into a floating state in a touch detection period in which a first drive signal is applied to the first electrodes, and a second drive signal is applied to the second electrodes at predetermined intervals to perform touch detection based on change in voltage of the first electrodes and change in voltage of the second electrodes.Type: ApplicationFiled: June 1, 2016Publication date: December 8, 2016Inventors: Daisuke ITO, Koji NOGUCHI, Hidetoshi KOMATSU, Toshiaki FUKUSHIMA
-
Publication number: 20160349881Abstract: According to one embodiment, a display device comprises pixel electrodes formed in a display area, drive electrodes opposed to the pixel electrodes, first and second line groups formed in a non-display area, a first switch configured to apply a voltage for display or a drive signal to the drive electrodes, and a scanner configured to control the first switch. In the above structure, the first and second line groups are disposed with a space between the first line group and the second line group, and at least a part of the scanner is disposed in the space between the first line group and the second line group.Type: ApplicationFiled: April 28, 2016Publication date: December 1, 2016Applicant: JAPAN DISPLAY INC.Inventors: TOSHIAKI FUKUSHIMA, HIROSHI MIZUHASHI
-
Publication number: 20160266451Abstract: To reduce the area of a portion where a plurality of transistors are provided in a region around a display region and to reduce the area of the region around the display region, a display device includes a first transistor and a second transistor each as a transistor, and the transistor includes a connection wiring that electrically connects a semiconductor film and a source-drain electrode to each other via an opening portion provided in an insulating film. The first transistor and the second transistor are adjacent to each other, and there is a clearance between an end portion, on the side of the second transistor, of the connection wiring in the first transistor and an end portion, on the side of the second transistor, of the opening portion in the first transistor.Type: ApplicationFiled: March 11, 2016Publication date: September 15, 2016Applicant: Japan Display Inc.Inventors: Gen KOIDE, Toshiaki FUKUSHIMA
-
Publication number: 20160216695Abstract: Provided is an electronic timepiece, including: a step motor; a motor driver; a normal drive pulse generation circuit configured to output a normal drive pulse at a designated drive rank; a rotation detection pulse generation circuit configured to output a detection pulse; a rotation detection circuit which comprises at least a first detection mode determination circuit configured to conduct determination in a first detection mode and which is configured to detect rotation or non-rotation of a rotor; a rotation determination counter circuit configured to count a number of times that the rotation has been successively detected by the rotation detection circuit; a first detection mode determination counter circuit configured to count a number of times that a detection signal generated by the detection pulse becomes a predetermined detection pattern in the first detection mode; and a drive rank selection circuit configured to designate a drive rank of the normal drive pulse based on results of the counting conduType: ApplicationFiled: August 29, 2014Publication date: July 28, 2016Inventors: Yu TAKYO, Shogo SEZAKI, Toshiaki FUKUSHIMA, Daisuke IRI