Patents by Inventor Duyi KIM

Duyi KIM 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).

  • Fingerprint recognition optical film, and backlight unit and liquid crystal display device comprising the film optical
    Patent number: 11288486
    Abstract: A fingerprint recognition optical film which transmits an infrared ray (IR) is introduced. The fingerprint recognition optical film may include a base film and a lens pattern layer including a plurality of lenses attached to one surface of the base film. Here, the plurality of lenses in the lens pattern layer are parallelly arranged with a predetermined distance and a flat pattern portion is formed among the lenses to transmit the infrared ray wherein a protrusion direction of the plurality of lenses is arranged to face to a light source.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: March 29, 2022
    Assignee: LMS CO., LTD.
    Inventors: Hyeryong Kim, Sejin Oh, Dongcheol Lee, Janghee Cho, Jinyeon Choi, Duyi Kim, Jeehong Min, Jinhwan Kim, Dongmin Kim, Taejun Lee, Jihoon Lee
  • Optical film for improving light diffusion and preventing brightness deterioration
    Patent number: 11048038
    Abstract: Disclosed is an optical film includes a first prism sheet including a plurality of first prisms arranged on one side of the first prism sheet, a second prism sheet including a plurality of second prisms arranged on one side of the second prism sheet, and a diffuser sheet including a plurality of first protrusions and a plurality of second protrusions arranged on one side of the diffuser sheet. The optical film is prepared to have a height of the first protrusions being greater than a height of the second protrusions. The optical film is further prepared that the first prism sheet, the second prism sheet and the diffuser sheet laminated where the first protrusions of the diffuser sheet is adhered to a side of the first prism sheet where no first prisms are arranged, and the first prisms of the first prism sheet are adhered to a side of the second prism sheet where no second prisms are arranged.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: June 29, 2021
    Assignee: LMS CO., LTD
    Inventors: Dongcheol Lee, Jinyeon Choi, Sejin Oh, Woojong Lee, Minho Kim, Duyi Kim
  • FINGERPRINT RECOGNITION OPTICAL FILM, AND BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE COMPRISING THE FILM OPTICAL
    Publication number: 20200394382
    Abstract: A fingerprint recognition optical film which transmits an infrared ray (IR) is introduced. The fingerprint recognition optical film may include a base film and a lens pattern layer including a plurality of lenses attached to one surface of the base film. Here, the plurality of lenses in the lens pattern layer are parallelly arranged with a predetermined distance and a flat pattern portion is formed among the lenses to transmit the infrared ray wherein a protrusion direction of the plurality of lenses is arranged to face to a light source.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 17, 2020
    Inventors: Hyeryong KIM, Sejin OH, Dongcheol LEE, Janghee CHO, Jinyeon CHOI, Duyi KIM, Jeehong MIN, Jinhwan KIM, Dongmin KIM, Taejun LEE, Jihoon LEE
  • OPTICAL FILM
    Publication number: 20200116919
    Abstract: Disclosed is an optical film includes a first prism sheet including a plurality of first prisms arranged on one side of the first prism sheet, a second prism sheet including a plurality of second prisms arranged on one side of the second prism sheet, and a diffuser sheet including a plurality of first protrusions and a plurality of second protrusions arranged on one side of the diffuser sheet. The optical film is prepared to have a height of the first protrusions being greater than a height of the second protrusions. The optical film is further prepared that the first prism sheet, the second prism sheet and the diffuser sheet laminated where the first protrusions of the diffuser sheet is adhered to a side of the first prism sheet where no first prisms are arranged, and the first prisms of the first prism sheet are adhered to a side of the second prism sheet where no second prisms are arranged.
    Type: Application
    Filed: October 14, 2019
    Publication date: April 16, 2020
    Applicant: LMS Co., Ltd
    Inventors: Dongcheol LEE, Jinyeon CHOI, Sejin OH, Woojong LEE, Minho KIM, Duyi KIM