Patents by Inventor Won-il CHOI

Won-il 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).

  • Publication number: 20160239051
    Abstract: A stretchable display device includes a stretchable display that changes between extended and retracted states, a slider surrounding an edge of the stretchable display and having a variable length, and a cover that includes a plurality of unit bodies surrounding an outer surface of the slider.
    Type: Application
    Filed: October 5, 2015
    Publication date: August 18, 2016
    Inventors: Sang Wol LEE, Won IL CHOI
  • Publication number: 20160219696
    Abstract: An electronic device including a stretchable/contractible base and a wiring formed on the base, the wiring being divided into a first region having a shape extending in a proceeding direction and a second region in which the proceeding direction is curved. The wiring includes a first conductive layer and a second conductive layer formed of a material that makes the second conductive layer easier to be curved than the first conductive layer. The first conductive layer is formed in the first region and the second conductive layer is formed in the second region.
    Type: Application
    Filed: June 3, 2015
    Publication date: July 28, 2016
    Inventors: Won Il Choi, Jong Ho Hong
  • Publication number: 20160198567
    Abstract: A stretchable display includes a stretchable substrate including a flat part and a plurality of protrusions protruding above the flat part, a plurality of fixed light emitting devices, each fixed light emitting device being attached to an upper surface of a corresponding protrusion of the plurality of protrusions, a plurality of moving light emitting devices, the moving light emitting devices being positioned among the plurality of protrusions, and a plurality of connection wirings connecting among the plurality of fixed light emitting devices and the plurality of moving light emitting devices.
    Type: Application
    Filed: July 17, 2015
    Publication date: July 7, 2016
    Inventors: Jong Ho HONG, Hye Jin JOO, Won IL CHOI
  • Publication number: 20160066411
    Abstract: A circuit board includes a substrate and conductive patterns disposed inside or on the substrate, in which two neighboring conductive patterns are separated from each other by a gap disposed therebetween, and the conductive pattern includes first cut patterns connected to the gap and disposed toward an inside of the conductive pattern.
    Type: Application
    Filed: January 21, 2015
    Publication date: March 3, 2016
    Inventors: Jong Ho HONG, Hye Jin Joo, Won Il Choi, Soon Sung Ahn, Hyoung Wook Jang
  • Patent number: 8486528
    Abstract: The present invention relates to a process of preparing a biocompatible temperature-sensitive nano-carrier, which comprises the steps of (a) preparing a polymer dispersion comprising a water-soluble biocompatible polymer with photo-crosslinkable functional group(s), (b) preparing a polymer-initiator solution by adding an initiator to the polymer dispersion, and (c) preparing the nano-carrier by irradiating light onto the polymer-initiator solution, wherein the average diameter of the nano-carrier changes depending on temperature, and also relates to a temperature-sensitive nano-carrier. Nano-carriers of the present invention are temperature-sensitive, and their average diameter and pore size reversibly change in response to temperature change. In an embodiment of the present invention, nano-carriers can be prepared via a one-pot single-phase synthesis.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: July 16, 2013
    Assignee: Gwangju Institute of Science and Technology
    Inventors: Gi-yoong Tae, Won-il Choi, Ja-young Kim
  • Publication number: 20130054929
    Abstract: A mobile terminal and an operation method for the same based on memory state changes are provided. The operation method includes detecting a transition between memory states of a memory unit; performing operation control by placing and releasing memory usage restrictions on and from at least one of an application program previously loaded in the memory unit and an application program newly loaded in the memory unit based on the detected memory state transition.
    Type: Application
    Filed: August 23, 2012
    Publication date: February 28, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Kun Hoon BAIK, Woong Suk Cho, Won Il Choi, Jong Hoon Han
  • Publication number: 20090196937
    Abstract: The present invention relates to a process of preparing a biocompatible temperature-sensitive nano-carrier, which comprises the steps of (a) preparing a polymer dispersion comprising a water-soluble biocompatible polymer with photo-crosslinkable functional group(s), (b) preparing a polymer-initiator solution by adding an initiator to the polymer dispersion, and (c) preparing the nano-carrier by irradiating light onto the polymer-initiator solution, wherein the average diameter of the nano-carrier changes depending on temperature, and also relates to a temperature-sensitive nano-carrier. Nano-carriers of the present invention are temperature-sensitive, and their average diameter and pore size reversibly change in response to temperature change. In an embodiment of the present invention, nano-carriers can be prepared via a one-pot single-phase synthesis.
    Type: Application
    Filed: January 16, 2009
    Publication date: August 6, 2009
    Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Gi-yoong TAE, Won-il CHOI, Ja-young KIM