Patents by Inventor Mitsutaka Okita

Mitsutaka Okita 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: 20220075233
    Abstract: A display device comprises a liquid crystal panel including a plurality of pixels and an imaging device arranged on a back side of the liquid crystal panel. The imaging device has an imaging region overlaps with the imaging device and the other region other than the imaging region in a plan view. A plurality of linear electrodes is arranged separately from each other in the imaging region. Among the plurality of linear electrodes, a first pair of linear electrodes are separated by a first interval and a second pair of linear electrodes are separated by a second interval different from the first interval in a plan view. The first pair of linear electrodes and the second pair of linear electrodes are irregularly arranged.
    Type: Application
    Filed: November 19, 2021
    Publication date: March 10, 2022
    Applicant: Japan Display Inc.
    Inventors: Tetsuya KOJIMA, Mitsutaka OKITA
  • Publication number: 20220037785
    Abstract: According to one embodiment, a method of driving a phased array antenna, includes applying voltages to phase control electrodes in a first period such that radio waves to be emitted from antennas are in a same phase in a first emission direction, and applying the voltages to the phase control electrodes in a second period such that the radio waves to be emitted from the antennas are held in the same phase in the first emission direction. An absolute value of the voltage applied in the second period is different from an absolute value of the voltage applied in the first period, in each of the phase control electrodes.
    Type: Application
    Filed: July 29, 2021
    Publication date: February 3, 2022
    Applicant: Japan Display Inc.
    Inventor: Mitsutaka OKITA
  • 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
  • Patent number: 11209703
    Abstract: A display device comprises a liquid crystal panel including a plurality of pixels and an imaging device arranged on a back side of the liquid crystal panel. The imaging device has an imaging region overlaps with the imaging device and the other region other than the imaging region in a plan view. A plurality of linear electrodes is arranged separately from each other in the imaging region. Among the plurality of linear electrodes, a first pair of linear electrodes are separated by a first interval and a second pair of linear electrodes are separated by a second interval different from the first interval in a plan view. The first pair of linear electrodes and the second pair of linear electrodes are irregularly arranged.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: December 28, 2021
    Assignee: Japan Display Inc.
    Inventors: Tetsuya Kojima, Mitsutaka Okita
  • Publication number: 20210341779
    Abstract: An electronic device includes a liquid crystal display panel having a display region disposed with a plurality of pixels, an image sensor disposed on the back side of the liquid crystal display panel and imaging the front direction through the liquid crystal display panel, and a lighting unit disposed between the liquid crystal display panel and the image sensor. The image sensor is disposed in a region overlapping the display region, and the lighting unit includes an optical modulation element disposed to overlap the display region and a light source for lighting the optical modulation element.
    Type: Application
    Filed: July 15, 2021
    Publication date: November 4, 2021
    Applicant: Japan Display Inc.
    Inventor: Mitsutaka OKITA
  • Publication number: 20210311357
    Abstract: A display device includes a first substrate including a first surface and a second surface on the opposite side with respect to the first surface, a second surface having a third surface opposite the first surface and a fourth surface on the opposite side with respect to the third surface, and a liquid crystal layer disposed between the first substrate and the second substrate, the display device includes a first region and a second region in a plan view, the first substrate includes a first polarizer provided on the second surface and a second polarizer being overlapped with the second region and being laminated with the first polarizer, and the second substrate includes a third polarizer provided on the fourth surface and a fourth polarizer being overlapped with the second region and being laminated with the third polarizer.
    Type: Application
    Filed: March 31, 2021
    Publication date: October 7, 2021
    Applicant: Japan Display Inc.
    Inventors: Mitsutaka OKITA, Shinichi KOMURA
  • Publication number: 20210311353
    Abstract: A display device includes a light shielding layer being on a first substrate, the light shielding layer having an opening; a first region including a first light transmitting portion having a first color material, a second light transmitting portion having a second coloring material, and a third light transmitting portion having a third color material; a second region being surrounded by the first region on the first substrate, the second region including a height adjusting member being in the opening of the light shielding layer; a resin layer being on the first light transmitting portion, the second light transmitting portion, the third light transmitting portion, and the height adjusting member; a second substrate facing the first substrate; and a liquid crystal layer being between the first substrate and the second substrate.
    Type: Application
    Filed: March 26, 2021
    Publication date: October 7, 2021
    Applicant: Japan Display Inc.
    Inventor: Mitsutaka OKITA
  • Publication number: 20210232001
    Abstract: Disclosed is a display device including an array substrate, a liquid crystal layer over the array substrate, a counter substrate over the liquid crystal layer, a first resin film located under the array substrate and having a first opening overlapping with the liquid crystal layer, a first wavelength plate in the first opening, and a first linear polarizing plate located under and overlapping with the first resin film and the first wavelength plate. The first resin film may be in contact with or spaced apart from the first wavelength plate.
    Type: Application
    Filed: December 16, 2020
    Publication date: July 29, 2021
    Applicant: Japan Display Inc.
    Inventors: Tetsuya Kojima, Mitsutaka Okita
  • Publication number: 20210072604
    Abstract: A display device comprises a liquid crystal panel including a plurality of pixels and an imaging device arranged on a back side of the liquid crystal panel. The imaging device has an imaging region overlaps with the imaging device and the other region other than the imaging region in a plan view. A plurality of linear electrodes is arranged separately from each other in the imaging region. Among the plurality of linear electrodes, a first pair of linear electrodes are separated by a first interval and a second pair of linear electrodes are separated by a second interval different from the first interval in a plan view. The first pair of linear electrodes and the second pair of linear electrodes are irregularly arranged.
    Type: Application
    Filed: September 3, 2020
    Publication date: March 11, 2021
    Applicant: Japan Display Inc.
    Inventors: Tetsuya KOJIMA, Mitsutaka OKITA
  • Publication number: 20210065638
    Abstract: According to one embodiment, a display device includes scanning lines, a first signal line crossing the scanning lines, a first pixel electrode electrically connected to the first signal line, and a common electrode opposed to the first pixel electrode. In a frame period having a writing period where the scanning lines are sequentially selected and a holding period where the scanning lines are in an unselected state, polarity of a potential of the first signal line is first polarity in the writing period, and is reversed to second polarity different from the first polarity midway through the holding period.
    Type: Application
    Filed: August 4, 2020
    Publication date: March 4, 2021
    Applicant: Japan Display Inc.
    Inventor: Mitsutaka OKITA
  • Publication number: 20210026172
    Abstract: According to one embodiment, a display device comprises a first A spacer, a second A spacer, a third A spacer and a fourth A spacer. The first A spacer and the third A spacer are on a first substrate. The second A spacer and the fourth A spacer are on a second substrate. At least one of the first and second substrates is a flexible substrate. The first A spacer and the second A spacer are aligned in a first direction. The third A spacer and the fourth A spacer are aligned in a second direction. Side surfaces of the first A spacer and the second A spacer face in the first direction. Side surfaces of the third A spacer and the fourth A spacer face in the second direction.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 28, 2021
    Applicant: Japan Display Inc.
    Inventor: Mitsutaka OKITA
  • Patent number: 10831069
    Abstract: According to one embodiment, a display device comprises a first A spacer, a second A spacer, a third A spacer and a fourth A spacer. The first A spacer and the third A spacer are on a first substrate. The second A spacer and the fourth A spacer are on a second substrate. At least one of the first and second substrates is a flexible substrate. The first A spacer and the second A spacer are aligned in a first direction. The third A spacer and the fourth A spacer are aligned in a second direction. Side surfaces of the first A spacer and the second A spacer face in the first direction. Side surfaces of the third A spacer and the fourth A spacer face in the second direction.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: November 10, 2020
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • 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: 10768495
    Abstract: A display device includes: a plurality of video lines and a plurality of scanning lines provided over an insulating base material; a light shielding film overlapping with the plurality of video lines and the plurality of scanning lines; a pixel electrode and a common electrode provided in a sub-pixel region surrounded by the plurality of video lines and the plurality of scanning lines in plan view; a liquid crystal layer driven by an electric field generated between the pixel electrode and the common electrode; and a first insulating layer provided between the pixel electrode and the common electrode. The common electrode is provided between the first insulating layer and the liquid crystal layer, and has an opening overlapping with the plurality of video lines and the plurality of scanning lines and overlapping with the pixel electrode. In a light transmission region surrounded by the light shielding film, a shape of the pixel electrode is a linear shape without a branching portion.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: September 8, 2020
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • 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: 10466522
    Abstract: If a divided area of common electrode layers is positioned on a source line, a leakage electric field on the source line has an effect on a liquid crystal layer through the divided area of the common electrode layers. A display device includes an array substrate and a counter substrate. The array substrate includes scanning signal wiring layers, video signal wiring layers, pixel electrode layers arranged in a layer higher than the video signal wiring layers, and common electrode layers arranged in a layer higher than the pixel electrode layers. The common electrode layers are arranged in positions covering the video signal wiring layers in a plan view. The common electrode layers are divided in the extending direction of the video signal line.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: November 5, 2019
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita
  • 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: 10409101
    Abstract: There is provided a liquid crystal display device that reduces viewing angle color mixture on a high definition screen. In the liquid crystal display device, a pixel electrode is formed on a region surrounded by scanning lines and picture signal lines. The scanning line is insulated from the picture signal line by a first insulating film. An organic insulating film is formed to cover the picture signal line. The organic insulating film is not formed below the pixel electrode. A common electrode is formed to cover the organic insulating film and the first insulating film. A second insulating film is formed to cover the common electrode. The pixel electrode is formed on the second insulating film. On the organic insulating film, a metal light shielding film is formed as extending in a second direction. The metal light shielding film is in contact with the common electrode.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: September 10, 2019
    Assignee: Japan Display Inc.
    Inventor: Mitsutaka Okita