Patents by Inventor Yeon Choi

Yeon 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).

  • METHOD OF CARBON COATING ON NANOPARTICLE AND CARBON COATED NANOPARTICLE PRODUCED BY THE SAME
    Publication number: 20170081248
    Abstract: A method includes: supplying sources or nanoparticles of any one or two or more combinations selected from a group which consists of a carbon source, a doping source, a doped element containing carbon source, and a waste plastic source into a high-temperature and high-pressure closed autoclave, completely closing the high-temperature and high-pressure closed autoclave, and forming a nanoparticle-carbon core-shell structure by a single process by coating a carbon layer on the surface of the nanoparticles or forming a core-shell structure of nanoparticle-doped carbon by the single process by coating a carbon layer doped with the doped element on the surface of the nanoparticles under pressure self-generated in the autoclave and a reaction temperature in the range of 500 to 850° C. by heating the autoclave.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 23, 2017
    Inventors: Namjo Jeong, Chan-Soo Kim, Ji Yeon Choi, Joo-Youn Nam, Soon-Chul Park, Moon Seok Jang, Kangmin Chon, Ji-Hyung Han, Han-Ki Kim, Eun-Jin Jwa
  • Light emitting device
    Patent number: 9601666
    Abstract: A light emitting device includes a substrate, a plurality of light emitting cells separated from each other and disposed on the substrate, and a plurality of conductive interconnection layers electrically connecting two neighboring light emitting cells. Each light emitting cell includes a light emitting structure including a first conductivity-type semiconductor layer, an active layer and a second conductivity-type semiconductor layer, a first electrode, a second electrode, and an etching area. The light emitting structure further includes a first side surface and a second side surface, and if a width between the first side surface and the second side surface is defined as W, the second electrode is disposed in an area between a position separated from the first side surface by 1 5 ? W and a position separated from the first side surface of the light emitting structure by 1 2 ? W .
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: March 21, 2017
    Assignee: LG Innotek Co., Ltd.
    Inventors: Sung Kyoon Kim, Hee Young Beom, Hyun Seoung Ju, Byung Yeon Choi
  • WIRELESS TERMINAL COMMUNICABLE WITH EXTERNAL DEVICE AND SERVER AND SOFTWARE UPDATING METHOD THEREOF
    Publication number: 20170060567
    Abstract: A wireless terminal and a method for updating software installed on the wireless terminal are provided. The wireless terminal is communicable with an external device, a first server, and a second server. The method includes receiving update policy information on the software from the first server, obtaining a latest version of the software newer than a version of the software from the second server, and, if state information of the external device satisfies an installation condition for the obtained latest version of the software according to the received update policy information, installing the obtained latest version of the software on the wireless terminal.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Inventors: Sang Jae KIM, Soon Yeon CHOI
  • Liquid crystal display and manufacturing method thereof
    Patent number: 9563077
    Abstract: Provided is a liquid crystal display, including: an insulating substrate, the insulating substrate includes a center region and an edge region surrounding the center region; a roof layer formed on the insulating substrate, and configured to support a plurality of separated microcavities; a pixel electrode formed on the insulating substrate, and formed in the microcavity supported by the roof layer; and a liquid crystal layer positioned within the microcavity, in which the roof layer includes an opening for injecting a liquid crystal into the plurality of microcavities, and the opening in the center region has a substantially uniform size, and the opening in the edge region is smaller than the opening in the center region.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: February 7, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Ji Park, Hee-Keun Lee, Soo Jung Lee, Ji Yeon Choi
  • APPLICATION OPERATING METHOD AND ELECTRONIC DEVICE USING THE SAME
    Publication number: 20170017531
    Abstract: An electronic device includes a memory configured to store at least one application and a processor configured to connect to the memory. The processor is configured to provide a list of external devices, having the same attributes as at least part of operation attributes of the at least one application, based on a state where the at least one application is registered in a device manager, in which at least one external device is registered, to operate as a device.
    Type: Application
    Filed: July 13, 2016
    Publication date: January 19, 2017
    Inventors: Soon Yeon CHOI, Ji Eun BYUN, Ga Jin SONG, Chang Hyun AHN
  • PHARMACEUTICAL COMPOSITION FOR PREVENTION AND TREATMENT OF MENTAL DISEASE WITH ENHANCED NMDAR FUNCTION
    Publication number: 20160375000
    Abstract: The present invention relates to a pharmaceutical composition for improving a sociability behavior in a patient having a mental disease with an enhanced NMDAR function.
    Type: Application
    Filed: December 11, 2015
    Publication date: December 29, 2016
    Inventors: Eun-Joon KIM, Su-Yeon CHOI, Wook-Suk CHUNG, Eun-Ee LEE, Ha-Ram PARK
  • Islanding detection apparatus for parallel distributed generation system
    Patent number: 9496716
    Abstract: An islanding detection apparatus minimizes a reduction in power quality and detects islanding when distributed generations are operated in parallel. Also, another islanding detection apparatus for parallel distributed generations synchronizes parallel distributed generations by periodically applying a reactive current at a half cycle. Further, another islanding detection apparatus for parallel distributed generations easily synchronizes parallel distributed generations even when inverters installed in the respective distributed generations are fabricated through different makers.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: November 15, 2016
    Assignee: KACO NEW ENERGY INC.
    Inventors: Kwang Seob Kim, Trung Kien Vu, San Kang, Min Jae Kim, Jae Yeon Choi
  • DISPLAY DEVICE HAVING IMPROVED TRANSMITTANCE CHARACTERISTICS
    Publication number: 20160313600
    Abstract: A display device including: a substrate including first, second, and third pixel areas; a plurality of pixel electrodes positioned on the substrate within each of the first, second, and third pixel areas; and a plurality of roof layers each facing a respective one of the pixel electrodes, ones of the roof layers positioned to be spaced apart from respective ones of the pixel electrodes with a plurality of microcavities therebetween, the microcavities positioned to correspond to each of the first, second, and third pixel areas. The roof layer includes first and second color filter layers positioned corresponding to the first pixel area and the second pixel area and a third color filter layer positioned below the liquid crystal layer, and a cell gap of the microcavity corresponding to the third pixel area is smaller than cell gaps of the microcavities corresponding to the first and second pixel areas.
    Type: Application
    Filed: March 15, 2016
    Publication date: October 27, 2016
    Inventors: Sang Il PARK, Won Tae KIM, Ji Yeon CHOI, Seok-Joon HONG
  • LIQUID CRYSTAL DISPLAY HAVING IMPROVED INVERSION AND MIXING CHARACTERISTICS
    Publication number: 20160306246
    Abstract: A liquid crystal display includes a pixel electrode including a first subpixel electrode and a second subpixel electrode, a first common electrode corresponding to the first pixel electrode, a second common electrode corresponding to the second pixel electrode, a first transistor connected to the first subpixel electrode; a second transistor connected to the second subpixel electrode, a gate line connected to the first transistor and the second transistor, and a data line connected to the first transistor and the second transistor.
    Type: Application
    Filed: April 12, 2016
    Publication date: October 20, 2016
    Inventors: Byung-Gon KUM, Sung Hwan WON, Ji Yeon CHOI, Sang Il KIM
  • DISPLAY DEVICES
    Publication number: 20160299377
    Abstract: Provided is a display device including a display unit and a mirror unit adjacent to each other, in which the display unit includes a first substrate, a thin film transistor formed on the substrate, a pixel electrode connected to the thin film transistor, a roof layer formed on the pixel electrode to be spaced apart from the pixel electrode with a microcavity therebetween, and a liquid crystal layer filling the microcavity, and the mirror unit includes a second substrate, a first electrode formed on the second substrate, a second electrode formed on the first substrate to be spaced apart from the first electrode with a microcavity therebetween, and an electrochromic layer formed in the microcavity.
    Type: Application
    Filed: March 2, 2016
    Publication date: October 13, 2016
    Inventors: Ji Yeon CHOI, Sang Ji PARK, Byung-Gon KUM
  • LIQUID CRYSTAL DISPLAY AND MANUFACTURING METHOD THEREOF
    Publication number: 20160291380
    Abstract: A liquid crystal display (LCD) includes: a substrate including a display area and a peripheral area; a thin film transistor disposed on the display area of the substrate; a pixel electrode connected to the thin film transistor; a liquid crystal layer disposed inside a microcavity on the pixel electrode; a roof layer disposed on the microcavity; a gate driver integrated on the peripheral area of the substrate and including a plurality of signal lines and a plurality of stages connected to the plurality of signal lines via contact holes; and a blocking layer comprising a base layer disposed on the contact hole and a first inorganic layer disposed on the base layer.
    Type: Application
    Filed: September 29, 2015
    Publication date: October 6, 2016
    Inventors: Seok-Joon HONG, Dae Ho SONG, Sang Il PARK, Ji Yeon CHOI
  • LIQUID CRYSTAL DISPLAY AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20160291364
    Abstract: The present disclosure provides a liquid crystal display including: a substrate, a thin film transistor formed on the substrate, a pixel electrode connected to the thin film transistor, a roof layer formed to face the pixel electrode, a liquid crystal layer formed between the pixel electrode and the roof layer and formed of a plurality of microcavities, and a capping layer positioned on the roof layer and formed to cover a trench formed between the plurality of microcavities, in which the capping layer includes a water-soluble polymer material, a photosensitive material, and a moisture-curable adhesive.
    Type: Application
    Filed: March 2, 2016
    Publication date: October 6, 2016
    Inventors: Sang Ji PARK, Ho Yun BYUN, Byung-Gon KUM, Ji Yeon CHOI
  • SECURE MESSAGE TRANSMISSION APPARATUS AND PROCESSING METHOD THEREOF
    Publication number: 20160241523
    Abstract: The disclosure provides a secure message transmission apparatus and a processing method thereof. A method for processing a secure message may include receiving a message transmitted by a transmission-side terminal and determining whether the message is an encrypted message, by a non-secure message service unit; delivering the encrypted message to a secure message service unit by the non-secure message service unit when the message is the encrypted message; and decrypting the encrypted message, and re-encrypting the decrypted message and transmitting the re-encrypted message to a reception-side terminal, by the secure message service unit.
    Type: Application
    Filed: February 11, 2016
    Publication date: August 18, 2016
    Inventors: Dave AHN, Kyung-Soo KWAG, Ji-Yeon CHOI, Sung-Hyun HONG
  • LIGHT EMITTING DEVICE
    Publication number: 20160225816
    Abstract: A light emitting device includes a substrate, light emitting cells, each of the light emitting cells including a light emitting structure including lower and upper semiconductor layers, an upper electrode, and a lower electrode, a conductive interconnection layer electrically connecting a lower electrode of a first one of the light emitting cells and an upper electrode of a second one of the light emitting cells, and a current blocking layer disposed to extend from between the upper electrode and the upper semiconductor layer, wherein each light emitting cell further includes a conductive layer arranged to electrically connect the upper electrode of the second light emitting cell to the upper semiconductor layer of the second light emitting cell.
    Type: Application
    Filed: April 7, 2016
    Publication date: August 4, 2016
    Inventors: Byung Yeon Choi, Myeong Soo Kim, Hee Young Beom, Yong Gyeong Lee, Hyun Seoung Ju, Gi Seok Hong
  • LIGHT EMITTING DEVICE
    Publication number: 20160225954
    Abstract: A light emitting device includes a substrate, a plurality of light emitting cells separated from each other and disposed on the substrate, and a plurality of conductive interconnection layers electrically connecting two neighboring light emitting cells. Each light emitting cell includes a light emitting structure including a first conductivity-type semiconductor layer, an active layer and a second conductivity-type semiconductor layer, a first electrode, a second electrode, and an etching area. The light emitting structure further includes a first side surface and a second side surface, and if a width between the first side surface and the second side surface is defined as W, the second electrode is disposed in an area between a position separated from the first side surface by 1 5 ? W and a position separated from the first side surface of the light emitting structure by 1 2 ? W .
    Type: Application
    Filed: January 27, 2016
    Publication date: August 4, 2016
    Inventors: Sung Kyoon KIM, Hee Young Beom, Hyun Seoung Ju, Byung Yeon Choi
  • X-RAY TARGETING DEVICE
    Publication number: 20160213338
    Abstract: The present invention relates to an X-ray targeting device which includes a frame installed at an X-ray generator of an X-ray imaging device which outputs X-rays toward a patient to be measured, and a light radiation unit installed at the frame, and radiating guide light in accordance with a direction in which the X-rays are output to display a radiated position or radiated range of the X-rays with respect to the patient. According to the present invention, since an X-ray targeting device includes a light radiation unit radiating guide light in accordance with a radiated direction of X-rays, a worker can easily identify the radiated direction or the radiated range of the X-rays, thereby saving time and effort required for X-ray imaging.
    Type: Application
    Filed: November 17, 2015
    Publication date: July 28, 2016
    Inventors: Yong Won CHOI, Hyo Gi SEO, Keum Yeon CHOI, Joon Seok LEE
  • IP based automatic response service system and method for electronic device
    Patent number: 9398153
    Abstract: An electronic device using an Internet Protocol (IP) telephony technology and a method and system for forwarding information between the electronic device and a call center system are provided. The method includes sending, by an electronic device, a telephony connection request to a call center system, generating, by a switch device, a response message including connection information of a web ARS server of the call center system in response to the telephony connection request, sending, by the switch device, the response message including the connection information to the electronic device, forming, by the electronic device, a data session with the web ARS server using the received connection information of the web ARS server, and providing the ARS of the display scheme using information received from the web ARS server.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: July 19, 2016
    Assignees: Samsung Electronics Co., Ltd., IT Square Technology Limited
    Inventors: Jae-Hwan Kim, Gil-Soo Lee, Do-Yeon Choi
  • External battery for determining the amplitude of charge current
    Patent number: 9391464
    Abstract: An external battery is disclosed. In one aspect, the external battery includes a battery and an input stage configured to receive external power and output a control signal. The external battery also includes a charger configured to convert the external power into a plurality of charge currents based at least in part on the resistance of at least one resistor detected at a control terminal of the charger, wherein the control terminal is electrically connected to the resistor, wherein the charge currents have different amplitudes, wherein the charger is further configured to provide the converted charge currents to the battery. The external battery further includes a controller configured to control the magnitude of the resistance of the resistor based at least in part on i) the control signal and ii) at least one switch.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: July 12, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Ji-Yeon Choi, Heui-Sang Yoon, Hyung-Sin Kim
  • SEMICONDUCTOR MEMORY DEVICES, MEMORY SYSTEMS INCLUDING THE SAME, AND METHODS OF OPERATING MEMORY SYSTEMS
    Publication number: 20160133314
    Abstract: A semiconductor memory device includes a memory cell array and a refresh control circuit. The memory cell array includes a plurality of memory cell rows. The refresh control circuit performs a normal refresh operation on the plurality of memory cell rows and performs a weak refresh operation on a plurality of weak pages of the plurality of memory cell rows. Each of the weak pages includes at least one weak cell whose data retention time is smaller than normal cells. The refresh control circuit transmits a refresh flag signal to a memory controller external to the semiconductor memory device when the refresh control circuit performs the weak refresh operation on the weak pages in a normal access mode.
    Type: Application
    Filed: July 8, 2015
    Publication date: May 12, 2016
    Inventors: Doo-Hee HWANG, Sang-Kyu KANG, Dong-Yang LEE, Jae-Yeon CHOI, Jong-Hyun CHOI
  • Light emitting device having current blocking layer
    Patent number: 9337236
    Abstract: A light emitting device includes a substrate, light emitting cells, each of the light emitting cells including a light emitting structure including lower and upper semiconductor layers, an upper electrode, and a lower electrode, a conductive interconnection layer electrically connecting a lower electrode of a first one of the light emitting cells and an upper electrode of a second one of the light emitting cells, and a current blocking layer disposed to extend from between the upper electrode and the upper semiconductor layer, wherein each light emitting cell further includes a conductive layer arranged to electrically connect the upper electrode of the second light emitting cell to the upper semiconductor layer of the second light emitting cell.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: May 10, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Byung Yeon Choi, Myeong Soo Kim, Hee Young Beom, Yong Gyeong Lee, Hyun Seoung Ju, Gi Seok Hong