Patents by Inventor Keun Seo Lim

Keun Seo Lim 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: 11774645
    Abstract: The present invention relates to a diffuser and a method of manufacturing the same, and more particularly, to a diffuser and a method of manufacturing the same, in which light emitted through the diffuser forms an asymmetric light output pattern. A diffuser according to an exemplary embodiment is a diffuser that forms an asymmetric light output pattern by diffusing laser beams received from a laser source, the diffuser including: a base; and a micro lens array disposed on the base, in which the micro lens array has a plurality of micro lenses each comprising a lower surface and a curved surface disposed on the lower surface, and the lower surface has horizontal and vertical lengths different from each other.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: October 3, 2023
    Inventors: Keun-Seo Lim, Gun-Wook Yoon, Shin-Ae Hwang, Seokyoon Yoon
  • Publication number: 20210003750
    Abstract: The present invention relates to a diffuser and a method of manufacturing the same, and more particularly, to a diffuser and a method of manufacturing the same, in which light emitted through the diffuser forms an asymmetric light output pattern. A diffuser according to an exemplary embodiment is a diffuser that forms an asymmetric light output pattern by diffusing laser beams received from a laser source, the diffuser including: a base; and a micro lens array disposed on the base, in which the micro lens array has a plurality of micro lenses each comprising a lower surface and a curved surface disposed on the lower surface, and the lower surface has horizontal and vertical lengths different from each other.
    Type: Application
    Filed: May 29, 2020
    Publication date: January 7, 2021
    Applicant: .
    Inventors: Keun-Seo LIM, Gun-Wook YOON, Shin-Ae HWANG, Seokyoon YOON
  • Patent number: 10803814
    Abstract: A display apparatus may be provided that includes: a transparent display panel; a blind panel which is disposed adjacent to the transparent display panel and includes a plurality of cells that are individually drivable; and a controller which changes an operation mode through an on/off of the transparent display panel and a selective drive of a cell included in the blind panel. As a result, the display apparatus according to the embodiment of the present invention is a transparent display apparatus using the OLED. The display apparatus is able to operate without the external environmental constraints and to operate in various modes including the display function.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: October 13, 2020
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jun-Bo Yoon, Keun Seo Lim
  • Patent number: 10459148
    Abstract: A display device including a light source and a light guide plate may be provided. The light guide plate includes: a light guiding part which guides light incident on a side thereof from the light source by total internal reflection; a fine pattern portion which emits the guided light only to an upper portion of the light guiding part; a guard ring portion which protects the fine pattern portion from the intrusion of impurities; and a light emitting member which is disposed on a top surface of the fine pattern portion and a top surface of the guard ring portion. The light guide plate is formed of a transparent material.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: October 29, 2019
    Assignee: MEMSLUX
    Inventors: Jun-Bo Yoon, Keun-Seo Lim, Shin-Ae Hwang
  • Publication number: 20180301096
    Abstract: A display apparatus may be provided that includes: a transparent display panel; a blind panel which is disposed adjacent to the transparent display panel and includes a plurality of cells that are individually drivable; and a controller which changes an operation mode through an on/off of the transparent display panel and a selective drive of a cell included in the blind panel. As a result, the display apparatus according to the embodiment of the present invention is a transparent display apparatus using the OLED. The display apparatus is able to operate without the external environmental constraints and to operate in various modes including the display function.
    Type: Application
    Filed: July 26, 2017
    Publication date: October 18, 2018
    Applicant: Korea Advanced Institute of Science And Technology
    Inventors: Jun-Bo YOON, Keun Seo Lim