Patents by Inventor Yoshitaka Ozeki

Yoshitaka Ozeki 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: 11187958
    Abstract: According to one embodiment, a display device includes a scanning line, a semiconductor layer, a first inorganic insulating film located between the scanning line and the semiconductor layer, a first signal line, a second inorganic insulating film having a main surface which contacts the first signal line and located between the semiconductor layer and the first signal line, a capacitance electrode contacting the main surface, a pixel electrode overlapping the capacitance electrode, and a third inorganic insulating film covering the first signal line and the capacitance electrode and located between the first signal line and the pixel electrode and between the capacitance electrode and the pixel electrode.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: November 30, 2021
    Assignee: Japan Display Inc.
    Inventors: Tomoyasu Hirano, Yoshitaka Ozeki, Koji Ishizaki, Takahiro Takeuchi, Koshiro Moriguchi
  • Publication number: 20210356786
    Abstract: According to one embodiment, a display device includes a display panel and a drive circuit. A transistor provided in a pixel portion or a peripheral portion of the display panel includes a semiconductor layer having a first end and a second end, first and second gate electrodes overlapping the semiconductor layer, a source electrode connected to the first end, and a drain electrode connected to the second end. The first and second gate electrodes are disposed in a first layer. The source electrode and the drain electrode are disposed in a second layer. The source electrode is formed to cover at least a first channel region in planar view. The drain electrode is formed to cover at least a second channel region in planar view.
    Type: Application
    Filed: July 30, 2021
    Publication date: November 18, 2021
    Inventor: Yoshitaka OZEKI
  • Patent number: 11150524
    Abstract: According to one embodiment, a display device includes a base substrate, a switching element including a semiconductor layer, a power supply line, a pixel electrode electrically connected to the switching element, a capacitance electrode positioned between the base substrate and the pixel electrode and electrically connected to the power supply line, a first interlayer insulating film positioned between the pixel electrode and the capacitance electrode, a common electrode, and an electrophoretic element positioned between the pixel electrode and the common electrode. An edge of the capacitance electrode overlaps the pixel electrode over the entire periphery thereof.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: October 19, 2021
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Tadayoshi Katsuta, Koji Ishizaki, Takahiro Takeuchi, Koshiro Moriguchi
  • Patent number: 11143922
    Abstract: According to one embodiment, a display device includes a substrate, a switching element provided on the substrate and including a relay electrode, a first electrode provided further away from the substrate than the switching element, a first insulating film provided on the first electrode and having a first thickness, a second electrode provided on the first insulating film, a second insulating film provided on the second electrode and having a second thickness and a third electrode provided on the second insulating film and supplied with a same potential as that of the first electrode. The second thickness is greater than the first thickness.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: October 12, 2021
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Seiji Uejima, Nobutaka Ozaki
  • Patent number: 11126052
    Abstract: According to an aspect, an array substrate includes: a substrate; a light-shielding layer; a first gate electrode; a semiconductor layer; a signal line; and an electrode. A first surface of the substrate is provided with, in sequence, the light-shielding layer, the first gate electrode, the semiconductor layer, the signal line, and the electrode. The semiconductor layer includes a first impurity region electrically coupled to the electrode, a first channel region overlapping the first gate electrode, a second impurity region opposite to the first impurity region with respect to the first channel region, and a first lightly doped drain region between the first impurity region and the first channel region. The light-shielding layer has a first end and a second end opposite to each other. The first end overlaps the first channel region. The light-shielding layer overlaps a boundary between the first channel region and the first lightly doped drain region.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 21, 2021
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Gen Koide, Nobutaka Ozaki
  • Patent number: 11113498
    Abstract: According to one embodiment, a detection device includes a substrate, a drive electrode provided on the substrate, a detection electrode provided on the substrate and capacitively coupling with the drive electrode, and a first thin film transistor and a second thin film transistor, electrically connected to the drive electrode, and the first thin film transistor has a withstand voltage higher than a withstand voltage of the second thin film transistor.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: September 7, 2021
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Hayato Kurasawa, Toshinori Uehara, Koshiro Moriguchi
  • Patent number: 11062111
    Abstract: According to an aspect, a fingerprint detection device includes: a substrate; a plurality of drive electrodes provided on one surface side of the substrate and arranged in a first direction; and a plurality of detection electrodes provided on the one surface side and arranged in a second direction intersecting the first direction. The detection electrodes intersect the drive electrodes in a normal direction of the substrate. Each of the detection electrodes includes: a plurality of first line portions; a plurality of second line portions extending in a direction intersecting the first line portions; and a plurality of bent portions each connecting one of the first line portions and one of the second line portions adjacent to the one of the first line portions to each other.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: July 13, 2021
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Yoshitaka Ozeki, Toshinori Uehara, Yuji Suzuki
  • Patent number: 11054954
    Abstract: According to an aspect, a fingerprint detection device includes: a substrate; a plurality of drive electrodes provided on one surface side of the substrate and arranged in a first direction; a plurality of detection electrodes provided on the one surface side and arranged in a second direction intersecting the first direction; and an insulating layer provided in a normal direction of the substrate between each of the drive electrodes and the corresponding detection electrodes. The detection electrodes intersect the drive electrodes in the normal direction of the substrate. The detection electrodes include: a first metallic layer; and a second metallic layer positioned closer to the one surface than the first metallic layer to the one surface. The first metallic layer has a reflectance of visible light lower than that of the second metallic layer.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: July 6, 2021
    Assignee: Japan Display Inc.
    Inventors: Hayato Kurasawa, Yoshitaka Ozeki, Toshinori Uehara, Yuji Suzuki
  • Publication number: 20210116762
    Abstract: A display device is provided and includes first signal line between first and second pixel areas in first direction; first switching element in first pixel area, first switching element including first relay electrode in first pixel area; second switching element in second pixel area, second switching element including second relay electrode in second pixel area; first pixel electrode in the first pixel area; and second pixel electrode in second pixel area, wherein first pixel electrode includes first connector, second pixel electrode includes second connector, first and second connectors are arranged in first direction with first signal line interposed therebetween, gap width between first connector and first signal line is different from gap width between first signal line and second connector, and gap width between first relay electrode and first signal line is different from gap width between first signal line and second relay electrode.
    Type: Application
    Filed: December 23, 2020
    Publication date: April 22, 2021
    Inventors: Mitsufumi SOGABE, Yoshitaka OZEKI, Nobutaka OZAKI
  • Publication number: 20210026215
    Abstract: According to one embodiment, a display device includes a first conductive layer, a second conductive layer overlapping the first conductive layer, a first capacitive portion located in a same layer as the first conductive layer, a second capacitive portion located in a same layer as the second conductive layer and overlapping the first capacitive portion, a first inorganic insulating film located between the first conductive layer and the second conductive layer and between the first capacitive portion and the second capacitive portion, a drain electrode electrically connected to the second capacitive portion, a pixel electrode electrically connected to the drain electrode.
    Type: Application
    Filed: October 15, 2020
    Publication date: January 28, 2021
    Applicant: Japan Display Inc.
    Inventors: Koji ISHIZAKI, Yoshitaka OZEKI, Takahiro TAKEUCHI, Koshiro MORIGUCHI, Tomoyasu HIRANO
  • Patent number: 10903243
    Abstract: According to one embodiment, there is provided a display device including a basement, a first switching element which is provided on the basement and includes a first semiconductor layer and a first gate electrode, a second switching element which is provided on the basement and includes a second semiconductor layer and a second gate electrode, and a pixel electrode which is electrically connected to the first switching element. A distance between the first semiconductor layer and the first gate electrode is greater than a distance between the second semiconductor layer and the second gate electrode.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: January 26, 2021
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Nobutaka Ozaki, Koshiro Moriguchi, Takahiro Takeuchi, Koji Ishizaki
  • Patent number: 10877322
    Abstract: According to one embodiment, a display device including a first signal line positioned between a first and second pixel area, a common electrode, a first and second switching element, a first and second pixel electrode, wherein the first pixel electrode includes a first connector, the second pixel electrode includes a second connector and a second projection, the common electrode includes an opening, the first and second connector are arranged with the first signal line interposed therebetween, the second projection is disposed in the first direction between the first signal line and the second connector, and a first gap is different from a second gap.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 29, 2020
    Assignee: Japan Display Inc.
    Inventors: Mitsufumi Sogabe, Yoshitaka Ozeki, Nobutaka Ozaki
  • Patent number: 10871698
    Abstract: According to one embodiment, a display device includes a capacitance electrode, a first pixel electrode overlapping the capacitance electrode, a second pixel electrode overlapping the capacitance electrode, a shield layer disposed between the first pixel electrode and the second pixel electrode, a common electrode, and an electrophoretic element disposed between the common electrode and the first pixel electrode and between the common electrode and the shield layer. The first pixel electrode and the second pixel electrode are arranged along a first direction, and the shield layer extends in a second direction which crosses the first direction between the first pixel electrode and the second pixel electrode.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: December 22, 2020
    Assignee: Japan Display Inc.
    Inventors: Takahiro Takeuchi, Yoshitaka Ozeki, Koji Ishizaki, Tomoyasu Hirano, Koshiro Moriguchi
  • Publication number: 20200393717
    Abstract: According to one embodiment, a display device includes a first substrate including a first signal line and a second signal line adjacent to each other along a first direction, an organic insulating film located on the first signal line and the second signal line, and a first spacer located on the organic insulating film and a second substrate opposing the first substrate and including a second spacer opposing the first spacer. The organic insulating film has a through-hole between the first signal line and the second signal line in plan view. The first spacer is provided to overlap the through-hole in plan view and filling the through-hole.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 17, 2020
    Applicant: Japan Display Inc.
    Inventors: Morikazu NOMURA, Yoshitaka OZEKI, Toru KAWAMURA
  • Patent number: 10866474
    Abstract: According to one embodiment, a display device includes a switching element, an organic insulating film which covers the switching element, a reflective film in contact with the organic insulating film, a first transparent conductive film which covers the reflective film, a first capacitance insulating film which covers the first transparent conductive film, a pixel electrode disposed on the first capacitance insulating film and electrically connected to the switching element, an electrophoretic element disposed on the pixel electrode and a common electrode disposed on the electrophoretic element.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 15, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Koji Ishizaki, Takahiro Takeuchi, Koshiro Moriguchi
  • Patent number: 10824041
    Abstract: According to one embodiment, a display device includes a switching element including a source electrode and a drain electrode, an inorganic insulating film in contact with the source electrode and the drain electrode, a metal film in contact with the inorganic insulating film and including an opening in a position superimposed on the drain electrode, a capacitor insulating film covering the metal film, an pixel electrode located on the capacitor insulating film and electrically connected to the drain electrode, an electrophoretic element located on the pixel electrode and a common electrode located on the electrophoretic element, and the metal film includes a forward tapered end portion in the opening.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: November 3, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Koji Ishizaki, Takahiro Takeuchi, Koshiro Moriguchi
  • Publication number: 20200333646
    Abstract: According to one embodiment, a display device includes a substrate, a switching element provided on the substrate and including a relay electrode, a first electrode provided further away from the substrate than the switching element, a first insulating film provided on the first electrode and having a first thickness, a second electrode provided on the first insulating film, a second insulating film provided on the second electrode and having a second thickness and a third electrode provided on the second insulating film and supplied with a same potential as that of the first electrode. The second thickness is greater than the first thickness.
    Type: Application
    Filed: July 6, 2020
    Publication date: October 22, 2020
    Applicant: Japan Display Inc.
    Inventors: Yoshitaka OZEKI, Seiji UEJIMA, Nobutaka OZAKI
  • Patent number: 10795214
    Abstract: According to one embodiment, a display device includes a first substrate including a first signal line and a second signal line adjacent to each other along a first direction, an organic insulating film located on the first signal line and the second signal line, and a first spacer located on the organic insulating film and a second substrate opposing the first substrate and including a second spacer opposing the first spacer. The organic insulating film has a through-hole between the first signal line and the second signal line in plan view. The first spacer is provided to overlap the through-hole in plan view and filling the through-hole.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 6, 2020
    Assignee: Japan Display Inc.
    Inventors: Morikazu Nomura, Yoshitaka Ozeki, Toru Kawamura
  • Patent number: 10747067
    Abstract: According to one embodiment, a display device includes a substrate, a switching element provided on the substrate and including a relay electrode, a first electrode provided further away from the substrate than the switching element, a first insulating film provided on the first electrode and having a first thickness, a second electrode provided on the first insulating film, a second insulating film provided on the second electrode and having a second thickness and a third electrode provided on the second insulating film and supplied with a same potential as that of the first electrode. The second thickness is greater than the first thickness.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: August 18, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshitaka Ozeki, Seiji Uejima, Nobutaka Ozaki
  • Publication number: 20200226343
    Abstract: According to an aspect, a fingerprint detection device includes: a substrate; a plurality of drive electrodes provided on one surface side of the substrate and arranged in a first direction; a plurality of detection electrodes provided on the one surface side and arranged in a second direction intersecting the first direction; and an insulating layer provided in a normal direction of the substrate between each of the drive electrodes and the corresponding detection electrodes. The detection electrodes intersect the drive electrodes in the normal direction of the substrate. The detection electrodes include: a first metallic layer; and a second metallic layer positioned closer to the one surface than the first metallic layer to the one surface. The first metallic layer has a reflectance of visible light lower than that of the second metallic layer.
    Type: Application
    Filed: March 24, 2020
    Publication date: July 16, 2020
    Inventors: Hayato KURASAWA, Yoshitaka OZEKI, Toshinori UEHARA, Yuji SUZUKI