Patents by Inventor Daiichi Suzuki

Daiichi Suzuki 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: 20210409584
    Abstract: The display device includes a liquid crystal panel having pixels, and an imaging device arranged on a backside of the liquid crystal display panel, wherein in an imaging area of the liquid crystal display panel overlapping the imaging device, the pixels are controlled so that black display pixels and white display pixels are alternately lined up in a row direction according to an operation of the imaging device.
    Type: Application
    Filed: September 15, 2021
    Publication date: December 30, 2021
    Applicant: Japan Display Inc.
    Inventors: Tetsuya KOJIMA, Mitsutaka OKITA, Daiichi SUZUKI, Emi HIGANO, Shigesumi ARAKI
  • Publication number: 20210408681
    Abstract: An antenna device includes a strip conductor layer, a radiation conductor layer continuous from the strip conductor layer, a ground conductor layer facing the strip conductor layer and the radiation conductor layer, a liquid crystal layer between the strip conductor layer and the ground conductor layer, and the radiation conductor layer and the ground conductor layer, and an alignment film between the strip conductor layer and the liquid crystal layer, and the radiation conductor layer and the liquid crystal layer. The alignment film includes a first region overlapping the strip conductor layer and a second region overlapping the radiation conductor layer, and the alignment state of liquid crystal molecules of the liquid crystal layer in the first region is different from the alignment state of liquid crystal molecules of the liquid crystal layer in the second region.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Applicant: Japan Display Inc.
    Inventors: Daiichi SUZUKI, Mitsutaka OKITA, Emi HIGANO
  • Publication number: 20210367338
    Abstract: A phased array antenna includes a plurality of antenna elements, a plurality of phase shifters, each of the plurality of phase shifters is connected to each of the plurality of antenna elements, respectively, a phase control circuit for controlling the amount of phase shift of the plurality of phase shifters, and a temperature sensor for detecting the temperature of the plurality of phase shifters. The phase control circuit is configured to control a voltage applied to the plurality of phase shifters based on the temperature detected by the temperature sensor.
    Type: Application
    Filed: August 5, 2021
    Publication date: November 25, 2021
    Applicant: Japan Display Inc.
    Inventor: Daiichi SUZUKI
  • Patent number: 10859869
    Abstract: In one embodiment, a display device comprises a dimming and display panels and an illumination device. The dimming panel includes first and second substrates and a first liquid crystal layer. The display panel includes third and fourth substrates and a second liquid crystal layer. The illumination device irradiates the dimming panel or the display panel with light. In the display device, at least one of the first, second, third and fourth substrates is a rigid substrate, and at least one of the first, second, third and fourth substrates is a flexible substrate.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: December 8, 2020
    Assignee: Japan Display Inc.
    Inventor: Daiichi Suzuki
  • Patent number: 10809573
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: October 20, 2020
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Kojima, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
  • Patent number: 10747058
    Abstract: According to one embodiment, the organic insulating film and the alignment film are provided on the first substrate. The alignment film is located between the liquid crystal layer and the organic insulating film and contacts the liquid crystal layer. The organic insulating film has a restricting portion on an inner side from the sealant and on an outer side from the display area. The restricting portion includes a recess and a projection extending in predetermined directions. The alignment film is formed on the restricting portion.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: August 18, 2020
    Assignee: Japan Display Inc.
    Inventors: Daiichi Suzuki, Hirofumi Wakemoto, Mitsutaka Okita, Tetsuya Kojima
  • Publication number: 20190391421
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.
    Type: Application
    Filed: September 6, 2019
    Publication date: December 26, 2019
    Applicant: Japan Display Inc.
    Inventors: Tetsuya KOJIMA, Hirofumi WAKEMOTO, Mitsutaka OKITA, Daiichi SUZUKI
  • Patent number: 10456710
    Abstract: According to one embodiment, the liquid crystal material processing device includes a syringe containing contents composed of a liquid crystal material and the like, having a distal end portion constituting a first discharge pipe, an agitation mechanism agitating the contents of the syringe, a vacuum chamber having a second discharge pipe penetrating the bottom to connect to the first discharge pipe of the syringe. The agitation mechanism agitates the liquid crystal material and the pure water in the syringe, and purifies the liquid crystal material by causing water-soluble impurities to transfer to the pure water. The agitation mechanism agitates the liquid crystal material remaining in the syringe after the water layer has been discharged. The evacuation mechanism evacuates the vacuum chamber and causes the liquid crystal material to be degassed while the remaining liquid crystal material is agitated.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 29, 2019
    Assignee: Japan Display Inc.
    Inventors: Midori Tsukane, Daiichi Suzuki, Yoshifumi Saeki
  • Patent number: 10451925
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least pan of the alignment film contacts the organic insulating film.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: October 22, 2019
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Kojima, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
  • Patent number: 10317761
    Abstract: A liquid crystal display device according to an aspect of the invention includes a display region having a plurality of sub pixels. The sub pixels each include a pixel electrode and a thin film transistor electrically coupled to the pixel electrode. A transient leak current of each thin film transistor included in the sub pixels at both ends of the display region among the sub pixels provided on a line passing through the center of the display region in plan view is smaller than a transient leak current of each thin film transistor included in the sub pixels in a central portion including the center.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: June 11, 2019
    Assignee: Japan Display Inc.
    Inventors: Yukio Tanaka, Daiichi Suzuki, Takashi Nakamura, Masahiro Tada, Youichi Asakawa
  • Publication number: 20190113786
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least pan of the alignment film contacts the organic insulating film.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 18, 2019
    Applicant: Japan Display Inc.
    Inventors: Tetsuya KOJIMA, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
  • Patent number: 10197858
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: February 5, 2019
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Kojima, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
  • Publication number: 20180341132
    Abstract: In one embodiment, a display device comprises a dimming and display panels and an illumination device. The dimming panel includes first and second substrates and a first liquid crystal layer. The display panel includes third and fourth substrates and a second liquid crystal layer. The illumination device irradiates the dimming panel or the display panel with light. In the display device, at least one of the first, second, third and fourth substrates is a rigid substrate, and at least one of the first, second, third and fourth substrates is a flexible substrate.
    Type: Application
    Filed: April 6, 2018
    Publication date: November 29, 2018
    Applicant: Japan Display Inc.
    Inventor: Daiichi Suzuki
  • Publication number: 20180217423
    Abstract: According to one embodiment, the organic insulating film and the alignment film are provided on the first substrate. The alignment film is located between the liquid crystal layer and the organic insulating film and contacts the liquid crystal layer. The organic insulating film has a restricting portion on an inner side from the sealant and on an outer side from the display area. The restricting portion includes a recess and a projection extending in predetermined directions. The alignment film is formed on the restricting portion.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 2, 2018
    Applicant: Japan Display Inc.
    Inventors: Daiichi SUZUKI, Hirofumi WAKEMOTO, Mitsutaka OKITA, Tetsuya KOJIMA
  • Publication number: 20180217422
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.
    Type: Application
    Filed: January 22, 2018
    Publication date: August 2, 2018
    Applicant: Japan Display Inc.
    Inventors: Tetsuya Kojima, Hirofumi Wakemoto, Mitsutaka Okita, Daiichi Suzuki
  • Patent number: 10031382
    Abstract: According to one embodiment, a liquid crystal display device includes a liquid crystal display panel which includes a pixel electrode, a liquid crystal layer and an alignment film, and a driver. The driver drives the pixel electrode at a drive frequency of 1 to 20 Hz. The alignment film has a resistivity of 5×1014 ?·cm or more.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: July 24, 2018
    Assignee: Japan Display Inc.
    Inventors: Daiichi Suzuki, Yoshifumi Saeki, Yukio Tanaka, Noboru Kunimatsu, Hidehiro Sonoda, Masahiro Kosuge
  • Patent number: 9997120
    Abstract: When an intermittent driving mode is carried out in a TFT using LIPS and ?-Si for a pixel transistor, a flicker easily occurs. A display device includes a TFT including a gate, a source, and a drain; a signal line connected to the source; a pixel capacitance connected to the drain; a first power supply configured to supply a potential that breaks electricity conducted between the source and the drain to the gate; and a switch configured to supply a potential of the first power supply to the gate. The display device includes a scan period and a dwell period. The switch is turned on in the scan period, and the switch is turned off in the dwell period.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: June 12, 2018
    Assignee: Japan Display Inc.
    Inventors: Yukio Tanaka, Daiichi Suzuki, Kenji Nakao
  • Patent number: 9905156
    Abstract: A high-precision display device is capable of suppressing a leak current and operating at a low power consumption. The display device comprises a source power supply for providing a pixel electric potential to each pixel placed on a substrate through a first thin-film transistor; a gate power supply for controlling conductive and nonconductive states of the first thin-film transistor; and a second thin-film transistor disposed between the first thin-film transistor and the gate power supply, the second thin-film transistor being controllable independently of the first thin-film transistor.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: February 27, 2018
    Assignee: Japan Display Inc.
    Inventors: Kenji Nakao, Yukio Tanaka, Daiichi Suzuki
  • Patent number: 9842555
    Abstract: According to one embodiment, a lateral electric-field type of liquid crystal display device includes a display panel and a controller, wherein a frame frequency falls within a range of 1 Hz to 10 Hz, an off-leak current of each of the TFTs has a value of 1×10?15 A or less, a resistivity of a liquid crystal and a resistivity of an alignment film both fall within one of a first range and a second range, the first range being 1×1013 to 5×1013 ?·cm, the second range being 5×1013 to 5×1014 ?·cm, and a relationship of “R1× C1?R2×C2” is satisfied, where R1 is a resistance and C1 is a capacity with respect to each pixel, R2 is a resistance and C2 is a capacity with respect to each pixel.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: December 12, 2017
    Assignee: Japan Display Inc.
    Inventors: Daiichi Suzuki, Yukio Tanaka, Kenji Nakao, Kazuhiro Nishiyama, Shinichi Komura, Shinichiro Oka, Mika Oiwa
  • Patent number: 9824655
    Abstract: According to one embodiment, a display device includes a display panel including a gate line, source lines, and switching elements connected to the gate line and the respective source lines. A gate driver selects the gate line. A source driver supplies an image signal to the source lines. The image signals can be supplied to pixel electrodes through the switching elements. A frame period includes a first scan period in which the gate line is selected, a first hold period subsequent to the first scan period, a second scan period in which the gate line is selected subsequent to the first hold period, and a second hold period subsequent to the second scan period. The first hold period is longer than the second hold period.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: November 21, 2017
    Assignee: Japan Display Inc.
    Inventors: Daiichi Suzuki, Yukio Tanaka, Hirofumi Wakemoto