Patents by Inventor Yoon Hyuk Choi

Yoon Hyuk Choi 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: 11925051
    Abstract: A display device includes: a first base having a display area; light-emitting elements on the first base; and an encapsulation layer over the light-emitting elements. The encapsulation layer includes: a first inorganic layer; an organic layer on the first inorganic layer; and a second inorganic layer on the organic layer. The first inorganic layer includes: a first buffer layer on the light-emitting elements; a first barrier layer on the first buffer layer; a first porous layer on the first barrier layer; a second barrier layer on the first porous layer; and a second buffer layer on the second barrier layer. A refractive index of the first buffer layer, the first barrier layer, and the first porous layer are different from one another, and the refractive index of the first porous layer is smaller than the refractive index of the first buffer layer and the first barrier layer.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: March 5, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong Tack Kim, Eung Seok Park, Jae Hyuk Lee, Yoon Hyeung Cho, Dong Uk Choi
  • Publication number: 20100134621
    Abstract: There is provided a camera secondary curved mirror structure which is manufactured by removing a predetermined portion of a circular curved mirror for a camera which is equidistant by a predetermined distance of m/R from each side of a line which passes through the center-point of the circular curved mirror in a vertical direction, to result two curved mirror members; jointing the two curve mirror members together to form a joint line; establishing a cutting line which is perpendicular to the joint line and which is at a predetermined distance n/D from a point where the joint line intersects the circumference of the curved mirror members; and cutting along the cutting line so that a lower portion of the jointed curved mirror members results, to form a curved mirror.
    Type: Application
    Filed: April 2, 2008
    Publication date: June 3, 2010
    Applicant: KOREA EXPRESSWAY CORPORATION
    Inventors: Seong Namkoong, Yoon Hyuk Choi, In Jeong Lee, Joon Young Min, Byung Do Heo