Patents by Inventor Hideaki Shishido

Hideaki Shishido 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).

  • Display device and electronic device
    Patent number: 10541375
    Abstract: A display device with a narrow bezel is provided. The display device includes a pixel circuit and a driver circuit which are provided on the same plane. The driver circuit includes a selection circuit and a buffer circuit. The selection circuit includes a first transistor. The buffer circuit includes a second transistor. The first transistor has a region overlapping with the second transistor. One of a source and a drain of the first transistor is electrically connected to a gate of the second transistor. One of a source and a drain of the second transistor is electrically connected to the pixel circuit.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: January 21, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideaki Shishido, Naoto Kusumoto
  • PULSE SIGNAL OUTPUT CIRCUIT AND SHIFT REGISTER
    Publication number: 20190392914
    Abstract: An object is to provide a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit. A pulse signal output circuit according to one embodiment of the disclosed invention includes first to tenth transistors. The ratio W/L of the channel width W to the channel length L of the first transistor and W/L of the third transistor are each larger than W/L of the sixth transistor. W/L of the fifth transistor is larger than W/L of the sixth transistor. W/L of the fifth transistor is equal to W/L of the seventh transistor. W/L of the third transistor is larger than W/L of the fourth transistor. With such a structure, a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit can be provided.
    Type: Application
    Filed: July 1, 2019
    Publication date: December 26, 2019
    Inventors: Seiko AMANO, Kouhei TOYOTAKA, Hiroyuki MIYAKE, Aya MIYAZAKI, Hideaki SHISHIDO, Koji KUSUNOKI
  • SEMICONDUCTOR DEVICE
    Publication number: 20190386036
    Abstract: A semiconductor device including a capacitor whose charge capacity is increased while improving the aperture ratio is provided. Further, a semiconductor device which consumes less power is provided. A transistor which includes a light-transmitting semiconductor film, a capacitor in which a dielectric film is provided between a pair of electrodes, an insulating film which is provided over the light-transmitting semiconductor film, and a first light-transmitting conductive film which is provided over the insulating film are included. The capacitor includes the first light-transmitting conductive film which serves as one electrode, the insulating film which functions as a dielectric, and a second light-transmitting conductive film which faces the first light-transmitting conductive film with the insulating film positioned therebetween and functions as the other electrode.
    Type: Application
    Filed: August 22, 2019
    Publication date: December 19, 2019
    Inventors: Shunpei YAMAZAKI, Hiroyuki MIYAKE, Hideaki SHISHIDO, Jun KOYAMA
  • DISPLAY DEVICE
    Publication number: 20190355303
    Abstract: In a display element such as an organic EL element, deterioration progresses due to light emission, and emission luminance is lowered even if the same voltage is applied to the display element. Therefore, use over time causes variations in luminance of each pixel, thereby a so-called “image burn-in” phenomenon occurs. Given this factor, the invention provides a display device which can reduce the difference in deterioration of a display element in each pixel and suppress variations in light emission of a display element in a pixel. It is prevented that only a specific pixel has a long accumulated lighting time. For that purpose, a gray scale of a display pattern is changed to prevent the difference in deterioration of display element in pixels from increasing. Alternatively, a specific display pattern is prevented from being fixedly displayed in a specific region.
    Type: Application
    Filed: June 7, 2019
    Publication date: November 21, 2019
    Inventors: Shunpei YAMAZAKI, Hajime KIMURA, Atsushi UMEZAKI, Yasunori YOSHIDA, Hideaki SHISHIDO, Takuya KIMISHIMA, Yasuyuki ARAI
  • LIGHT-EMITTING DISPLAY DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME
    Publication number: 20190355873
    Abstract: An object is to provide a light-emitting display device in which a pixel including a thin film transistor using an oxide semiconductor has a high aperture ratio. The light-emitting display device includes a plurality of pixels each including a thin film transistor and a light-emitting element. The pixel is electrically connected to a first wiring functioning as a scan line. The thin film transistor includes an oxide semiconductor layer over the first wiring with a gate insulating film therebetween. The oxide semiconductor layer is extended beyond the edge of a region where the first wiring is provided. The light-emitting element and the oxide semiconductor layer overlap with each other.
    Type: Application
    Filed: August 5, 2019
    Publication date: November 21, 2019
    Inventors: Ryo ARASAWA, Hideaki SHISHIDO
  • Display device
    Patent number: 10466560
    Abstract: A display device whose power consumption can be reduced is provided. Alternatively, the aperture ratio of a display device is increased. The display device includes a pixel having a first subpixel and a second subpixel. The first subpixel includes a first coloring layer and a first transistor, and the second subpixel includes a second coloring layer and a second transistor. At least regions where channels might be formed in semiconductor layers of the first and second transistors are positioned to overlap with the first coloring layer. The first coloring layer is likely to absorb light with a shorter wavelength than light absorbed by the second coloring layer. The semiconductor layers, electrodes, wirings, and the like included in the transistors transmit visible light.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: November 5, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kensuke Yoshizumi, Hideaki Shishido
  • Display device and electronic device
    Patent number: 10460647
    Abstract: A display device with a narrow bezel is provided. The display device includes a pixel circuit and a driver circuit provided on one plane. The driver circuit includes a selection circuit and a buffer circuit. The buffer circuit includes a first transistor and a second transistor. Sources of the first and second transistors are electrically connected with each other. Drains of the first and second transistors are electrically connected with each other. Gates of the first and second transistors are electrically connected with each other. The first transistor and the second transistor are stacked so that the direction of the current flow in the first transistor is parallel to that in the second transistor.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: October 29, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hideaki Shishido
  • Semiconductor device
    Patent number: 10446584
    Abstract: A semiconductor device including a capacitor whose charge capacity is increased while improving the aperture ratio is provided. Further, a semiconductor device which consumes less power is provided. A transistor which includes a light-transmitting semiconductor film, a capacitor in which a dielectric film is provided between a pair of electrodes, an insulating film which is provided over the light-transmitting semiconductor film, and a first light-transmitting conductive film which is provided over the insulating film are included. The capacitor includes the first light-transmitting conductive film which serves as one electrode, the insulating film which functions as a dielectric, and a second light-transmitting conductive film which faces the first light-transmitting conductive film with the insulating film positioned therebetween and functions as the other electrode.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: October 15, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hiroyuki Miyake, Hideaki Shishido, Jun Koyama
  • Semiconductor device and display device having semiconductor device
    Patent number: 10423254
    Abstract: A semiconductor device including a transistor includes a pixel circuit, a monitor circuit, and a correction circuit. The pixel circuit includes a selection transistor, a driving transistor, and a light-emitting element. The monitor circuit includes a monitor light-emitting element and a monitor transistor. The semiconductor device obtains the value of current flowing to the monitor light-emitting element and the monitor transistor and controls the value of current flowing to the light-emitting element and the driving transistor by the correction circuit.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: September 24, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroyuki Miyake, Hideaki Shishido, Susumu Kawashima, Shunpei Yamazaki
  • ELECTRONIC DEVICE
    Publication number: 20190281222
    Abstract: Provided is an electronic device with high portability, a highly browsable electronic device, or an electronic device having a novel light source that can be used in shooting photographs and video. The electronic device includes a camera and a flexible display portion. The display portion has a first region and a second region. The first region has a function of emitting light to a photographic subject. The second region has a function of displaying an image of the photographic subject shot by the camera. The display portion can be bent so that the first region and the second region face in different directions.
    Type: Application
    Filed: April 15, 2019
    Publication date: September 12, 2019
    Inventors: Shunpei YAMAZAKI, Hideaki SHISHIDO
  • Light-emitting display device having oxide semiconductor layer overlapping with adjacent pixel electrode
    Patent number: 10411158
    Abstract: An object is to provide a light-emitting display device in which a pixel including a thin film transistor using an oxide semiconductor has a high aperture ratio. The light-emitting display device includes a plurality of pixels each including a thin film transistor and a light-emitting element. The pixel is electrically connected to a first wiring functioning as a scan line. The thin film transistor includes an oxide semiconductor layer over the first wiring with a gate insulating film therebetween. The oxide semiconductor layer is extended beyond the edge of a region where the first wiring is provided. The light-emitting element and the oxide semiconductor layer overlap with each other.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: September 10, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryo Arasawa, Hideaki Shishido
  • Pulse signal output circuit and shift register
    Patent number: 10340021
    Abstract: An object is to provide a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit. A pulse signal output circuit according to one embodiment of the disclosed invention includes first to tenth transistors. The ratio W/L of the channel width W to the channel length L of the first transistor and W/L of the third transistor are each larger than W/L of the sixth transistor. W/L of the fifth transistor is larger than W/L of the sixth transistor. W/L of the fifth transistor is equal to W/L of the seventh transistor. W/L of the third transistor is larger than W/L of the fourth transistor. With such a structure, a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit can be provided.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: July 2, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Seiko Amano, Kouhei Toyotaka, Hiroyuki Miyake, Aya Miyazaki, Hideaki Shishido, Koji Kusunoki
  • Display device
    Patent number: 10319298
    Abstract: In a display element such as an organic EL element, deterioration progresses due to light emission, and emission luminance is lowered even if the same voltage is applied to the display element. Therefore, use over time causes variations in luminance of each pixel, thereby a so-called “image burn-in” phenomenon occurs. Given this factor, the invention provides a display device which can reduce the difference in deterioration of a display element in each pixel and suppress variations in light emission of a display element in a pixel. It is prevented that only a specific pixel has a long accumulated lighting time. For that purpose, a gray scale of a display pattern is changed to prevent the difference in deterioration of display element in pixels from increasing. Alternatively, a specific display pattern is prevented from being fixedly displayed in a specific region.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: June 11, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hajime Kimura, Atsushi Umezaki, Yasunori Yoshida, Hideaki Shishido, Takuya Kimishima, Yasuyuki Arai
  • SEMICONDUCTOR DEVICE
    Publication number: 20190165003
    Abstract: A semiconductor device including a capacitor whose charge capacity is increased while improving the aperture ratio is provided. Further, a semiconductor device which consumes less power is provided. A transistor which includes a light-transmitting semiconductor film, a capacitor in which a dielectric film is provided between a pair of electrodes, an insulating film which is provided over the light-transmitting semiconductor film, and a first light-transmitting conductive film which is provided over the insulating film are included. The capacitor includes the first light-transmitting conductive film which serves as one electrode, the insulating film which functions as a dielectric, and a second light-transmitting conductive film which faces the first light-transmitting conductive film with the insulating film positioned therebetween and functions as the other electrode.
    Type: Application
    Filed: January 16, 2019
    Publication date: May 30, 2019
    Inventors: Shunpei YAMAZAKI, Hiroyuki MIYAKE, Hideaki SHISHIDO, Jun KOYAMA
  • Electronic device
    Patent number: 10264184
    Abstract: Provided is an electronic device with high portability, a highly browsable electronic device, or an electronic device having a novel light source that can be used in shooting photographs and video. The electronic device includes a camera and a flexible display portion. The display portion has a first region and a second region. The first region has a function of emitting light to a photographic subject. The second region has a function of displaying an image of the photographic subject shot by the camera. The display portion can be bent so that the first region and the second region face in different directions.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: April 16, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hideaki Shishido
  • Semiconductor device
    Patent number: 10236305
    Abstract: A semiconductor device including a capacitor whose charge capacity is increased while improving the aperture ratio is provided. Further, a semiconductor device which consumes less power is provided. A transistor which includes a light-transmitting semiconductor film, a capacitor in which a dielectric film is provided between a pair of electrodes, an insulating film which is provided over the light-transmitting semiconductor film, and a first light-transmitting conductive film which is provided over the insulating film are included. The capacitor includes the first light-transmitting conductive film which serves as one electrode, the insulating film which functions as a dielectric, and a second light-transmitting conductive film which faces the first light-transmitting conductive film with the insulating film positioned therebetween and functions as the other electrode.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: March 19, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hiroyuki Miyake, Hideaki Shishido, Jun Koyama
  • Display device
    Patent number: 10217772
    Abstract: Provided is a display device with high resolution, high display quality, or high aperture ratio. A pixel includes three subpixels and is electrically connected to two gate lines. One of the gate lines is electrically connected to a gate of a transistor included in each of the two subpixels, and the other gate line is electrically connected to a gate of a transistor included in the other subpixel. Display elements of the three subpixels are arranged in the same direction. Three pixel electrodes of the three subpixels are arranged in the same direction.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: February 26, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideaki Shishido, Hiroyuki Miyake, Kouhei Toyotaka, Makoto Kaneyasu
  • DISPLAY DEVICE, DISPLAY MODULE, AND ELECTRONIC DEVICE
    Publication number: 20190027507
    Abstract: A novel display device or the like in which a transistor connected to a scan line has small gate capacitance is provided. A novel display device or the like in which a scan line has low resistance is provided. A novel display device or the like in which pixels can be arranged with high density is provided. A novel display device or the like that can be manufactured without an increase in cost is provided. In a transistor including a first gate electrode and a second gate electrode, the first gate electrode is formed using a metal material with low resistance and the second gate electrode is formed using a metal oxide material that can reduce oxygen vacancies in an oxide semiconductor layer. The first gate electrode is connected to the scan line, and the second gate electrode is connected to a wiring to which a constant potential is supplied.
    Type: Application
    Filed: September 10, 2018
    Publication date: January 24, 2019
    Inventors: Kouhei TOYOTAKA, Kei TAKAHASHI, Hideaki SHISHIDO, Koji KUSUNOKI
  • Touch panel
    Patent number: 10185449
    Abstract: To provide a thin touch panel, a touch panel with high visibility, a lightweight touch panel, or a touch panel with low power consumption. A pair of conductive layers is included in a capacitive touch sensor. The two conductive layers have a mesh shape including a plurality of openings. Furthermore, the conductive layers are provided to overlap with a region between two display elements in a plan view. Furthermore, the conductive layers included in the touch sensor are provided between two substrates included in the touch panel, and a conductive layer capable of supplying a constant potential is provided between a circuit which drives a display element and the pair of conductive layers.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: January 22, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideaki Shishido, Yoshiharu Hirakata, Daisuke Kubota
  • Input/output device and electronic device
    Patent number: 10139663
    Abstract: An input/output device is provided. The input/output device includes a first pixel electrode, a second pixel electrode, a first common electrode, a second common electrode, a liquid crystal, a first insulating film, a second insulating film, and a transistor. The first common electrode can serve as one electrode of a sensor element. The second common electrode can serve as the other electrode of the sensor element. The transistor includes a first gate, a second gate, and a semiconductor layer. The pixel electrode, the common electrodes, and the second gate are positioned on different planes. The second gate contains one or more kinds of metal elements included in the semiconductor layer. The second gate, the pixel electrode, and the common electrodes preferably contain one or more kinds of metal elements included in the semiconductor layer.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: November 27, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hideaki Shishido, Koji Kusunoki, Kouhei Toyotaka, Kazunori Watanabe, Makoto Kaneyasu