Patents by Inventor Kentaro Okuyama

Kentaro Okuyama 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: 10754180
    Abstract: According to one embodiment, a display device includes a display panel including a first outer surface and a second outer surface which is on a side opposite to the first outer surface, a light-modulating element opposed to the first outer surface, a first optical sensor which measures brightness on a first outer surface side of the display panel, and a controller which controls a transmittance of the light-modulating element on the basis of a measurement result obtained from the first optical sensor.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: August 25, 2020
    Assignee: Japan Display Inc.
    Inventor: Kentaro Okuyama
  • Publication number: 20200257168
    Abstract: A display device according to one aspect of the present invention includes a first substrate including a pixel portion and a terminal portion, a second substrate arranged to face the pixel portion, a first light source device arranged in the terminal portion, and irradiating a first end surface of the second substrate with first light, a liquid crystal layer arranged between the first substrate and the second substrate, and a semiconductor element arranged on a side opposite to a side of the pixel portion across the first light source device, and electrically coupled with the terminal portion, wherein the first light is propagated while reflected between the first substrate and the second substrate, and the liquid crystal layer modulates the propagated first light.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Applicant: Japan Display Inc.
    Inventors: Hiroki SUGIYAMA, Kentaro OKUYAMA, Hideki KANEKO, Hiroshi INAMURA, Manabu MIZUNO
  • Patent number: 10725327
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate including a first end portion and a second end portion located at a position different from the first end portion, a polymer dispersed liquid crystal layer disposed between the first substrate and the second substrate, a light source device located above the first substrate and disposed along the first end portion, and a light-shielding member disposed on at least a part of the second end portion.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 28, 2020
    Assignee: Japan Display Inc.
    Inventors: Yudai Numata, Kentaro Okuyama
  • Patent number: 10714026
    Abstract: According to one embodiment, a display device including a plurality of light sources of different luminous colors, a first substrate, a second substrate opposed to the first substrate, a liquid crystal layer interposed between the first and second substrates, to which light from the light sources enters, a display area on which an image is displayed, and a drive circuit configured to control quantity of light from each of the light sources on the basis of an analyzation result of an image signal used to display the image.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 14, 2020
    Assignee: Japan Display Inc.
    Inventors: Tenfu Nakamura, Kentaro Okuyama, Tae Kurokawa
  • Patent number: 10684510
    Abstract: A display device according to one aspect of the present invention includes a first substrate including a pixel portion and a terminal portion, a second substrate arranged to face the pixel portion, a first light source device arranged in the terminal portion, and irradiating a first end surface of the second substrate with first light, a liquid crystal layer arranged between the first substrate and the second substrate, and a semiconductor element arranged on a side opposite to a side of the pixel portion across the first light source device, and electrically coupled with the terminal portion, wherein the first light is propagated while reflected between the first substrate and the second substrate, and the liquid crystal layer modulates the propagated first light.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: June 16, 2020
    Assignee: Japan Display Inc.
    Inventors: Hiroki Sugiyama, Kentaro Okuyama, Hideki Kaneko, Hiroshi Inamura, Manabu Mizuno
  • Publication number: 20200174294
    Abstract: A display device is provided and includes a display panel including a first substrate, a lower electrode on the first substrate, a second substrate, an upper electrode on the second substrate, and a light modulation layer including liquid crystalline polymers with a striped structure and liquid crystal molecules, the light modulation layer being disposed between the first and second substrates; a light source unit disposed at a side of the display panel; and a light guided structure disposed between the display panel and the light source unit so that the light guided structure guides the incident light from the light source unit into the side of the display panel.
    Type: Application
    Filed: February 6, 2020
    Publication date: June 4, 2020
    Inventors: Kentaro OKUYAMA, Akira SAKAIGAWA
  • Publication number: 20200166796
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer including polymers and liquid crystal molecules, and a light-emitting element. The first substrate includes a transparent substrate, a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, an organic insulating film overlapping the switching element, and a pixel electrode electrically connected to the switching element. A thickness of the organic insulating film located between the transparent substrate and the pixel electrode is less than a thickness of the organic insulating film overlapping the switching element.
    Type: Application
    Filed: November 20, 2019
    Publication date: May 28, 2020
    Applicant: Japan Display Inc.
    Inventors: Kentaro OKUYAMA, Yoshihide OHUE, Hiroki SUGIYAMA, Tomoyuki TADA
  • Publication number: 20200150490
    Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Inventors: Manabu MIZUNO, Kentaro OKUYAMA, Hiroshi INAMURA, Hiroki SUGIYAMA
  • Patent number: 10634953
    Abstract: According to one embodiment, a display device includes a first substrate including a scanning line and a pixel electrode, a second substrate opposed to the first substrate, and a liquid crystal layer held between the first substrate and the second substrate and including streaky polymers and liquid crystal molecules, wherein the liquid crystal layer includes a first area overlapping the scanning line and a second area overlapping the pixel electrode, and the polymers of the first area are denser than the polymers of the second area.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: April 28, 2020
    Assignee: Japan Display Inc.
    Inventors: Kentaro Okuyama, Yudai Numata
  • Patent number: 10571746
    Abstract: A display device including a first substrate including a plurality of reflection electrodes on a front side of the first substrate, the plurality of reflection electrodes including a first reflection electrode and a second reflection electrode which is farther away from a light source than the first reflection electrode; a second substrate including a transparent electrode on a back side of the second substrate; a light modulation layer which includes a polymer dispersed liquid crystal layer containing a liquid crystalline monomer and liquid crystal molecules dispersed in the liquid crystalline monomer, the light modulation layer being disposed between the plurality of reflection electrodes and the transparent electrode; a drive section driving the plurality of reflection electrodes and the transparent electrode, wherein an application time of a first drive voltage applied between the transparent electrode and the first reflection electrode is shorter than an application time of a second drive voltage applied
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: February 25, 2020
    Assignee: Japan Display Inc.
    Inventors: Akira Sakaigawa, Kentaro Okuyama
  • Patent number: 10564465
    Abstract: A display device includes a light modulation layer and a light source. The light modulation layer is disposed between a pair of transparent substrates, has determined refractive index anisotropy, and includes plural light modulation elements which differ in responsiveness to an electric field generated by electrodes formed on a transparent substrate. The light source emits light of a determined color incident on the light modulation layer from a side of the light modulation layer. When the electric field is not generated, the light modulation layer transmits the incident light emitted from the light source. When the electric field is generated, the light modulation layer scatters the incident light and emits scattered light to a transparent substrate.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: February 18, 2020
    Assignee: Japan Display Inc.
    Inventors: Kentaro Okuyama, Akira Sakaigawa
  • Patent number: 10545377
    Abstract: According to an aspect, a display apparatus includes: a first light-transmissive substrate; a second light-transmissive substrate arranged to face the first light-transmissive substrate; a liquid crystal layer including polymer dispersed liquid crystals sealed between the first light-transmissive substrate and the second light-transmissive substrate; at least one light-emitting device arranged to face at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate; and at least one reflector arranged on at least one of a side surface of the first light-transmissive substrate or a side surface of the second light-transmissive substrate, the side surface of the first or second light-transmissive substrate being on an opposite side of the side surface of the first or second light-transmissive substrate to which the at least one light-emitting device faces, and configured to reflect light at the side surface on the opposite side.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: January 28, 2020
    Assignee: Japan Display Inc.
    Inventors: Manabu Mizuno, Kentaro Okuyama, Hiroshi Inamura, Hiroki Sugiyama
  • Publication number: 20200012149
    Abstract: A display device according to one aspect of the present invention includes a first substrate including at least a pixel electrode and a pixel switching circuit portion, a second substrate arranged to face the first substrate, a liquid crystal layer arranged between the first substrate and the second substrate, and configured to modulate light, the light being propagated while reflected between the first substrate and the second substrate, and a reflecting layer arranged over a liquid crystal layer side of the pixel switching circuit portion, partially superimposed with the pixel switching circuit portion, and electrically coupled with the pixel electrode, the reflecting layer having higher reflectance of the light than any members included in the pixel switching circuit portion.
    Type: Application
    Filed: September 16, 2019
    Publication date: January 9, 2020
    Inventors: Manabu MIZUNO, Kentaro OKUYAMA, Hiroshi INAMURA, Hideki KANEKO, Hiroki SUGIYAMA
  • Publication number: 20200012155
    Abstract: A display device according to one aspect of the present invention includes a first substrate including a pixel portion and a terminal portion, a second substrate arranged to face the pixel portion, a first light source device arranged in the terminal portion, and irradiating a first end surface of the second substrate with first light, a liquid crystal layer arranged between the first substrate and the second substrate, and a semiconductor element arranged on a side opposite to a side of the pixel portion across the first light source device, and electrically coupled with the terminal portion, wherein the first light is propagated while reflected between the first substrate and the second substrate, and the liquid crystal layer modulates the propagated first light.
    Type: Application
    Filed: September 17, 2019
    Publication date: January 9, 2020
    Applicant: Japan Display Inc.
    Inventors: Hiroki Sugiyama, Kentaro Okuyama, Hideki Kaneko, Hiroshi Inamura, Manabu Mizuno
  • Patent number: 10509268
    Abstract: According to an aspect, a display device includes: a first translucent substrate; a second translucent substrate facing the first translucent substrate; a liquid crystal layer including polymer dispersed liquid crystal sealed between the first translucent substrate and the second translucent substrate; at least one light emitter facing at least one of a side surface of the first translucent substrate or a side surface of the second translucent substrate; and a display controller that controls transmittance of light passing through the first translucent substrate and the second translucent substrate. A non-light-emitting period in which the at least one light emitter does not emit light is provided between a plurality of light-emitting periods in which the at least one light emitter emits light.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: December 17, 2019
    Assignee: Japan Display Inc.
    Inventors: Tae Kurokawa, Kentaro Okuyama, Takayuki Imai
  • Patent number: 10503013
    Abstract: According to one embodiment, a display device includes a display panel including a display surface, which displays an image by selectively reflecting light entering the display surface, and an illuminating device including an optical modulator provided on a display surface side of the display panel and including a plurality of portions in a major surface thereof and a light source provided on a side surface of the optical modulator, and the illuminating device illuminates the display panel at a predetermined brightness specific for each respective portion with the light entering the optical modulator from the light source.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: December 10, 2019
    Assignee: Japan Display Inc.
    Inventor: Kentaro Okuyama
  • Patent number: 10488728
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate, a liquid crystal layer held between the first and the second substrates, and a light-emitting element including light-emitting portions arranged in a first direction. The first substrate includes first and second wiring lines, and a third wiring line which intersects the first and the second wiring lines. The first and the second wiring lines extend in a second direction. The third wiring line has a first side located on a side close to the light-emitting element. The first side has a first curved portion which is curved between the first and the second wiring lines.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: November 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Yudai Numata, Kentaro Okuyama, Yoshihide Ohue
  • Patent number: 10488574
    Abstract: A display device includes a light source device including a light emission section which emits incident light, a light conversion section which receives the incident light and which converts the intensity of the incident light, and a white light conversion section which converts the light with the converted intensity to white light. With the light source device light emitted from the light conversion section is converted to white light by the white light conversion section. As a result, white light in which chromaticity deviation is reduced is used as a light source. With a display device in which white light is used as backlight light, image quality degradation is reduced.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: November 26, 2019
    Assignee: Japan Display Inc.
    Inventors: Kentaro Okuyama, Akira Sakaigawa
  • Patent number: 10466538
    Abstract: A display device according to one aspect of the present invention includes a first substrate including a pixel portion and a terminal portion, a second substrate arranged to face the pixel portion, a first light source device arranged in the terminal portion, and irradiating a first end surface of the second substrate with first light, a liquid crystal layer arranged between the first substrate and the second substrate, and a semiconductor element arranged on a side opposite to a side of the pixel portion across the first light source device, and electrically coupled with the terminal portion, wherein the first light is propagated while reflected between the first substrate and the second substrate, and the liquid crystal layer modulates the propagated first light.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: November 5, 2019
    Assignee: Japan Display Inc.
    Inventors: Hiroki Sugiyama, Kentaro Okuyama, Hideki Kaneko, Hiroshi Inamura, Manabu Mizuno
  • Publication number: 20190324305
    Abstract: According to one embodiment, a display device includes a first light guide including a first main surface, a second main surface, a first end portion opposed to light-emitting elements, and a second end portion, a first layer which is arranged to be in contact with the first main surface, and a second layer which is arranged to be in contact with the first main surface, and is located between the first layer and the second end portion, wherein the first light guide has a first refractive index, the first layer has a second refractive index lower than the first refractive index, the second layer has a third refractive index higher than the second refractive index, and the first layer is located at a position closer to the first end portion than the second layer.
    Type: Application
    Filed: April 10, 2019
    Publication date: October 24, 2019
    Applicant: Japan Display Inc.
    Inventors: Yudai NUMATA, Kentaro Okuyama