Patents by Inventor Youhei Iwai

Youhei Iwai 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: 20240103326
    Abstract: Provided is a mounting structure for a transparent liquid crystal display device that is placed in a glass window in which a periphery of a first glass plate is accommodated in and held by a first frame member. In the mounting structure, the transparent liquid crystal display device is affixed to the first glass plate by a transparent adhesive sheet and has a display region and a terminal region. The terminal region is accommodated in the first frame member, and a light source including an LED and a driver IC are placed in the terminal region. A heat conduction sheet is placed between the light source and the driver IC on one hand and the first frame member on the other hand and is acted upon by pressure by which the heat conduction sheet is pressed against the light source and the driver IC.
    Type: Application
    Filed: September 22, 2023
    Publication date: March 28, 2024
    Inventor: Youhei IWAI
  • Publication number: 20230380063
    Abstract: To mitigate a bending stress in the flexible wiring substrate in a structure, a display panel, to which the flexible wiring substrate connects, is curved along a first direction, and the flexible wiring is bent back to the rear of the display panel. The flexible wiring substrate connects with the display panel at a first region and at a second region; the flexible wiring substrate connects with the wiring substrate at a third region and at a fourth region. The flexible wiring substrate has a narrowest width in the first direction at an intermediate region between the display panel and the wiring substrate. A first wiring group in the flexible wiring substrate connects the first region with the third region or the fourth region, a second wiring group in the flexible wiring substrate connects the second region with another one of the third region or the fourth region.
    Type: Application
    Filed: August 3, 2023
    Publication date: November 23, 2023
    Inventors: Youhei IWAI, Hideaki ABE
  • Patent number: 11762227
    Abstract: The purpose is to form images in a middle of a transparent media. Accordingly, the present invention has a structure as follows. A display device including: a plate shaped display medium, having a first major surface and a second major surface, disposed on the pedestal, in which the display medium includes the liquid crystal display panel, disposed in a first transparent medium of refractive index n1, first LEDs, which supply light to the liquid crystal display panel, are disposed in the pedestal, a second transparent medium of refractive index n2 exists between the first LEDs and the liquid crystal display panel, and n2>n1.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: September 19, 2023
    Assignee: Japan Display Inc.
    Inventors: Youhei Iwai, Michiaki Sakamoto
  • Patent number: 11765829
    Abstract: To mitigate a bending stress in the flexible wiring substrate in a structure, a display panel, to which the flexible wiring substrate connects, is curved along a first direction, and the flexible wiring is bent back to the rear of the display panel. The flexible wiring substrate connects with the display panel at a first region and at a second region; the flexible wiring substrate connects with the wiring substrate at a third region and at a fourth region. The flexible wiring substrate has a narrowest width in the first direction at an intermediate region between the display panel and the wiring substrate. A first wiring group in the flexible wiring substrate connects the first region with the third region or the fourth region, a second wiring group in the flexible wiring substrate connects the second region with another one of the third region or the fourth region.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: September 19, 2023
    Assignee: Japan Display Inc.
    Inventors: Youhei Iwai, Hideaki Abe
  • Patent number: 11665822
    Abstract: An electronic device comprising: a substrate having a curved surface, a printed circuit board, and plural flexible wiring substrates, each of two of the plural flexible substrates has a terminal portion that is connected to the curved surface, the printed circuit board has a cutout between the two flexible wiring substrates.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: May 30, 2023
    Assignee: Japan Display Inc.
    Inventors: Youhei Iwai, Hideaki Abe
  • Publication number: 20220358866
    Abstract: According to one embodiment, a flexible substrate includes a first protective member including a first surface, a line portion including a flexible insulating base located on the first surface and a wiring layer disposed on the insulating base and a second protective member covering the line portion, and the first protective member includes a valley portion and a peak portion in the first surface, and the line portion is formed in a wavy shape and located on the valley portion and the peak portion.
    Type: Application
    Filed: July 21, 2022
    Publication date: November 10, 2022
    Applicant: Japan Display Inc.
    Inventors: Youhei IWAI, Takumi SANO
  • Patent number: 11480838
    Abstract: The purpose of the invention is to realize the display whose screen is seen as floating in the transparent medium. The present invention, for example, takes a following structure. A display device including a transparent display device being fixed in a pedestal including: the transparent display device having a display area and a first transparent medium, the first transparent medium existing between the display area and the pedestal, in which scanning lines and video signal lines are formed in the display area, scanning line lead wires and video signal lead wires are formed in the first transparent medium, and provided an area of the display area is S1, and an area of the first transparent medium is S2, S2/S1 is 0.5 or more.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: October 25, 2022
    Assignee: Japan Display Inc.
    Inventor: Youhei Iwai
  • Publication number: 20220334427
    Abstract: A power supplying structure for a transparent liquid crystal display device attached to a glass slide window which has a window glass and a first frame surrounding the window glass; the glass slide window is disposed in a window frame; in which a display area of the transparent liquid crystal display device overlaps the window glass; an external dimension of the display area of the transparent liquid crystal display device is smaller than an external dimension of the window glass; a light source for supplying light to the display area, a terminal area of the transparent liquid crystal display device, a wiring substrate, and a cable connected to the wiring substrate are housed in the first frame; the cable is connected to a receiving terminal formed in the frame; the receiving terminal can be connected to a power supplying terminal; the power supplying terminal is connected to a power source.
    Type: Application
    Filed: March 23, 2022
    Publication date: October 20, 2022
    Applicant: Japan Display Inc.
    Inventor: Youhei IWAI
  • Patent number: 11342300
    Abstract: The purpose of the invention is to counter measure a disconnection between the driver IC and the terminal when the terminal area of the electronic device is curved. One of the structures is as follows. An electronic device comprising: a driver IC installed in a terminal area, the terminal area being curved, wherein the driver IC has a circuit and plural bumps, the driver IC has a tapered portion formed on an opposite surface from a surface that the plural bumps are formed, the tapered portion overlaps with an outer most bump of the plural bumps.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: May 24, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventors: Youhei Iwai, Hideaki Abe
  • Publication number: 20220132667
    Abstract: An electronic device comprising: a substrate having a curved surface, a printed circuit board, and plural flexible wiring substrates, each of two of the plural flexible substrates has a terminal portion that is connected to the curved surface, the printed circuit board has a cutout between the two flexible wiring substrates.
    Type: Application
    Filed: January 4, 2022
    Publication date: April 28, 2022
    Inventors: Youhei IWAI, Hideaki ABE
  • Patent number: 11252819
    Abstract: An electronic device comprising: a substrate having a curved surface, a printed circuit board, and plural flexible wiring substrates, each of two of the plural flexible substrates has a terminal portion that is connected to the curved surface, the printed circuit board has a cutout between the two flexible wiring substrates.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: February 15, 2022
    Assignee: Japan Display Inc.
    Inventors: Youhei Iwai, Hideaki Abe
  • Publication number: 20210382363
    Abstract: The purpose of the invention is to realize the display whose screen is seen as floating in the transparent medium. The present invention, for example, takes a following structure. A display device including a transparent display device being fixed in a pedestal including: the transparent display device having a display area and a first transparent medium, the first transparent medium existing between the display area and the pedestal, in which scanning lines and video signal lines are formed in the display area, scanning line lead wires and video signal lead wires are formed in the first transparent medium, and provided an area of the display area is S1, and an area of the first transparent medium is S2, S2/S1 is 0.5 or more.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 9, 2021
    Inventor: Youhei Iwai
  • Publication number: 20210341810
    Abstract: The purpose is to form images in a middle of a transparent media. Accordingly, the present invention has a structure as follows. A display device including: a plate shaped display medium, having a first major surface and a second major surface, disposed on the pedestal, in which the display medium includes the liquid crystal display panel, disposed in a first transparent medium of refractive index n1, first LEDs, which supply light to the liquid crystal display panel, are disposed in the pedestal, a second transparent medium of refractive index n2 exists between the first LEDs and the liquid crystal display panel, and n2>n1.
    Type: Application
    Filed: July 12, 2021
    Publication date: November 4, 2021
    Inventors: Youhei IWAI, Michiaki SAKAMOTO
  • Publication number: 20210337667
    Abstract: To mitigate a bending stress in the flexible wiring substrate in a structure, a display panel, to which the flexible wiring substrate connects, is curved along a first direction, and the flexible wiring is bent back to the rear of the display panel. The flexible wiring substrate connects with the display panel at a first region and at a second region; the flexible wiring substrate connects with the wiring substrate at a third region and at a fourth region. The flexible wiring substrate has a narrowest width in the first direction at an intermediate region between the display panel and the wiring substrate. A first wiring group in the flexible wiring substrate connects the first region with the third region or the fourth region, a second wiring group in the flexible wiring substrate connects the second region with another one of the third region or the fourth region.
    Type: Application
    Filed: July 2, 2021
    Publication date: October 28, 2021
    Inventors: Youhei IWAI, Hideaki Abe
  • Publication number: 20210066238
    Abstract: The purpose of the invention is to counter measure a disconnection between the driver IC and the terminal when the terminal area of the electronic device is curved. One of the structures is as follows. An electronic device comprising: a driver IC installed in a terminal area, the terminal area being curved, wherein the driver IC has a circuit and plural bumps, the driver IC has a tapered portion formed on an opposite surface from a surface that the plural bumps are formed, the tapered portion overlaps with an outer most bump of the plural bumps.
    Type: Application
    Filed: August 25, 2020
    Publication date: March 4, 2021
    Applicant: Japan Display Inc.
    Inventors: Youhei IWAI, Hideaki ABE
  • Publication number: 20200413539
    Abstract: An electronic device comprising: a substrate having a curved surface, a printed circuit board, and plural flexible wiring substrates, each of two of the plural flexible substrates has a terminal portion that is connected to the curved surface, the printed circuit board has a cutout between the two flexible wiring substrates.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 31, 2020
    Inventors: Youhei IWAI, Hideaki ABE
  • Patent number: 8866993
    Abstract: In a liquid crystal display device having a display region defined by an area where a TFT substrate and an opposing substrate are superposed on each other, the present invention realizes a structure for avoiding breakage of a mechanically weak terminal section where the TFT substrate only extends. The terminal section where the TFT substrate only extends is mounted on a resin mold. Inside the resin mold, partition walls are formed to accommodate LEDs. By providing two partition walls in a pair at least in a center portion, an external pressure exerted on the center portion of the resin mold is distributed between the two partition walls and a maximum stress exerted on the terminal section of the TFT substrate is reduced.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: October 21, 2014
    Assignee: Japan Display Inc.
    Inventors: Tomio Yaguchi, Youhei Iwai, Hideyuki Ohsaka
  • Publication number: 20120188484
    Abstract: In a liquid crystal display device having a display region defined by an area where a TFT substrate and an opposing substrate are superposed on each other, the present invention realizes a structure for avoiding breakage of a mechanically weak terminal section where the TFT substrate only extends. The terminal section where the TFT substrate only extends is mounted on a resin mold. Inside the resin mold, partition walls are formed to accommodate LEDs. By providing two partition walls in a pair at least in a center portion, an external pressure exerted on the center portion of the resin mold is distributed between the two partition walls and a maximum stress exerted on the terminal section of the TFT substrate is reduced.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 26, 2012
    Inventors: Tomio Yaguchi, Youhei Iwai, Hideyuki Ohsaka