Patents by Inventor Kazunari Sakamoto

Kazunari Sakamoto 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: 11906831
    Abstract: An electro-optical device includes a first substrate, a second substrate bonded to the first substrate, a liquid crystal layer provided between the first substrate and the second substrate, a third substrate provided on an opposite side of the first substrate from the liquid crystal layer, and a frame configured to house the first substrate, the second substrate, and the third substrate. The frame includes a facing surface facing, via an adhesive layer, a first surface on an opposite side of the third substrate from the liquid crystal layer. The third substrate is larger than the first substrate. The frame and only the third substrate among the first substrate, the second substrate, and the third substrate are bonded to each other.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: February 20, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Suguru Uchiyama, Kazunari Sakamoto, Yasuhiro Takeuchi
  • Publication number: 20230036785
    Abstract: An electro-optical device includes a first substrate, a second substrate bonded to the first substrate, a liquid crystal layer provided between the first substrate and the second substrate, a third substrate provided on an opposite side of the first substrate from the liquid crystal layer, and a frame configured to house the first substrate, the second substrate, and the third substrate. The frame includes a facing surface facing, via an adhesive layer, a first surface on an opposite side of the third substrate from the liquid crystal layer. The third substrate is larger than the first substrate. The frame and only the third substrate among the first substrate, the second substrate, and the third substrate are bonded to each other.
    Type: Application
    Filed: July 26, 2022
    Publication date: February 2, 2023
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Suguru UCHIYAMA, Kazunari SAKAMOTO, Yasuhiro TAKEUCHI
  • Patent number: 11460757
    Abstract: A projector according to the present disclosure includes a light source device, a plurality of light modulation devices, a combining prism, a support member, and a projection optical system. A first light modulation device includes a first light modulation panel having a first incident side substrate, a first exit side substrate, and a liquid crystal layer, a frame body which has a first opening part, and surrounds a side surface of the first incident side substrate and a side surface of the first exit side substrate, a second incident side substrate opposed to the first incident side substrate in the first opening part, an incident side member fixed to the second incident side substrate and the frame body, a support target member supported by the support member, and a holding member which is made elastically deformable.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: October 4, 2022
    Inventors: Tomoaki Miyashita, Toshizo Nishi, Takanori Fukuyama, Kazunari Sakamoto, Suguru Uchiyama
  • Publication number: 20210055640
    Abstract: A projector according to the present disclosure includes a light source device, a plurality of light modulation devices, a combining prism, a support member, and a projection optical system. A first light modulation device includes a first light modulation panel having a first incident side substrate, a first exit side substrate, and a liquid crystal layer, a frame body which has a first opening part, and surrounds a side surface of the first incident side substrate and a side surface of the first exit side substrate, a second incident side substrate opposed to the first incident side substrate in the first opening part, an incident side member fixed to the second incident side substrate and the frame body, a support target member supported by the support member, and a holding member which is made elastically deformable.
    Type: Application
    Filed: August 21, 2020
    Publication date: February 25, 2021
    Inventors: Tomoaki MIYASHITA, Toshizo NISHI, Takanori FUKUYAMA, Kazunari SAKAMOTO, Suguru UCHIYAMA
  • Patent number: 10001675
    Abstract: There is provided a liquid crystal device having high reliability, a method of manufacturing a liquid crystal device, and an electronic apparatus. A liquid crystal device includes a seal material for sticking an element substrate and a counter substrate together, an encapsulant for filling an opening region in which the seal material is opened, a liquid crystal layer interposed by the element substrate and the counter substrate, a first inorganic alignment film provided between the element substrate and the liquid crystal layer, and a second inorganic alignment film provided between the counter substrate and the liquid crystal layer, in which at least the first inorganic alignment film is expanded and arranged in a region overlapping with the encapsulant in plan view.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: June 19, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Hideki Kitahara, Kazunari Sakamoto
  • Publication number: 20150370106
    Abstract: There is provided a liquid crystal device having high reliability, a method of manufacturing a liquid crystal device, and an electronic apparatus. A liquid crystal device includes a seal material 14 for sticking an element substrate and a counter substrate together, an encapsulant 17 for filling an opening region in which the seal material 14 is opened, a liquid crystal layer interposed by the element substrate and the counter substrate, a first inorganic alignment film 28 provided between the element substrate and the liquid crystal layer, and a second inorganic alignment film provided between the counter substrate and the liquid crystal layer, in which at least the first inorganic alignment film 28 is expanded and arranged in a region overlapping with the encapsulant 17 in plane view.
    Type: Application
    Filed: February 20, 2014
    Publication date: December 24, 2015
    Inventors: Hideki Kitahara, Kazunari Sakamoto
  • Patent number: 7061564
    Abstract: The invention provides a liquid crystal device including a first substrate and a second substrate opposing each other, a plurality of pixel electrodes disposed on the first substrate in a matrix, drive voltages having opposite polarities with respect to a reference voltage being applied to adjacent pixels, a common electrode disposed on the second substrate, and an electro-optical substance disposed between the first substrate and the second substrate. The device can also include a second alignment layer disposed on the second substrate and subjected to a uniform alignment operation, a first alignment layer formed of an alignment material on the first substrate subjected to alignment operations so that the alignment operation at strip areas and the alignment operation at areas other than the strip areas are different.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: June 13, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Kazunari Sakamoto, Masayuki Yazaki
  • Publication number: 20050007528
    Abstract: The invention provides a liquid crystal device including a first substrate and a second substrate opposing each other, a plurality of pixel electrodes disposed on the first substrate in a matrix, drive voltages having opposite polarities with respect to a reference voltage being applied to adjacent pixels, a common electrode disposed on the second substrate, and an electro-optical substance disposed between the first substrate and the second substrate. The device can also include a second alignment layer disposed on the second substrate and subjected to a uniform alignment operation, a first alignment layer formed of an alignment material on the first substrate subjected to alignment operations so that the alignment operation at strip areas and the alignment operation at areas other than the strip areas are different.
    Type: Application
    Filed: June 4, 2004
    Publication date: January 13, 2005
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazunari Sakamoto, Masayuki Yazaki
  • Patent number: 5115886
    Abstract: The present invention relates to a movable conveyor for construction sites. The platform includes: (a) a stage having two opposite end portions for conveying objects thereon; (b) a pair of elongated arms attached to the respective end portion of the stage, slidable and rotatable with respective to the stage in a horizontal plane; (c) a plurality of holders installed in the arms, the holders being adapted to grasp the structure and to hang therefrom; (d) a driving mechanisms to slide and rotate the elongated arms with respect to the stage and the holders; and (e) controller for sliding and rotating the driving mechanisms and for holders and releasing the holding, whereby the stage is conveyed with respect to the structure.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: May 26, 1992
    Assignees: Iseki Kaihatsu Koki Co., Ltd., Nemoto Kikaku Kogyo Co., Ltd.
    Inventors: Kazunari Sakamoto, Isao Nemoto