Patents by Inventor Jin-Hyun Choi

Jin-Hyun 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: 11442029
    Abstract: Provided is a radiation detector including a radiation detecting unit, a gate module controlling a gate line, a readout module reading out charges stored in an exposure detection pixel determined by a data line and the gate line, and an auto exposure detecting unit determining whether the radiation detecting unit is exposed to a radiation.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: September 13, 2022
    Inventors: Choul Woo Shin, Won Chul Ko, Sung Hoon Lim, Jin Hyun Choi
  • Patent number: 11058374
    Abstract: The present invention proposes a radiation detector including a housing, a radiation detection panel accommodated in the housing and converting radiation incident from the outside of the housing into an electric signal, a printed circuit board electrically connected to the radiation detection panel and an intermediate plate that is disposed between the radiation detection panel and the printed circuit board, supports the radiation detection panel, and is electrically connected to the ground line of the printed circuit board, wherein the intermediate plate is transmissive to the radiation.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: July 13, 2021
    Inventors: Seung Zoo Han, Jin Hyun Choi, Choul Woo Shin, Jung Seok Kim, Young Jong Oh, Jae Dong Lee
  • Patent number: 10751222
    Abstract: The present disclosure is to provide a method for producing polyurethane (PU) nanofibers with significantly improved hydrophilicity by producing water-soluble polymer/PU blend nanofiber by coaxial-electrospinning water-soluble polymer and hydrophobic PU, and, subsequently, dissolving and removing the water-soluble polymer from the blend nanofiber in water.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: August 25, 2020
    Assignee: Kyungpook National University Industry-Academic Cooperation Foundation
    Inventors: Jin Hyun Choi, Woo Jin Kim
  • Publication number: 20190046361
    Abstract: The present disclosure is to provide a method for producing polyurethane (PU) nanofibers with significantly improved hydrophilicity by producing water-soluble polymer/PU blend nanofiber by coaxial-electrospinning water-soluble polymer and hydrophobic PU, and, subsequently, dissolving and removing the water-soluble polymer from the blend nanofiber in water.
    Type: Application
    Filed: March 28, 2017
    Publication date: February 14, 2019
    Inventors: Jin Hyun CHOI, Woo Jin KIM
  • Publication number: 20170281103
    Abstract: The present invention proposes a radiation detector including a housing, a radiation detection panel accommodated in the housing and converting radiation incident from the outside of the housing into an electric signal, a printed circuit board electrically connected to the radiation detection panel and an intermediate plate that is disposed between the radiation detection panel and the printed circuit board, supports the radiation detection panel, and is electrically connected to the ground line of the printed circuit board, wherein the intermediate plate is transmissive to the radiation.
    Type: Application
    Filed: November 24, 2015
    Publication date: October 5, 2017
    Inventors: Seung Zoo HAN, Jin Hyun CHOI, Choul Woo SHIN, Jung Seok KIM, Young Jong OH, Jae Dong LEE
  • Publication number: 20170227475
    Abstract: Provided is a radiation detector including a radiation detecting unit, a gate module controlling a gate line, a readout module reading out charges stored in an exposure detection pixel determined by a data line and the gate line, and an auto exposure detecting unit determining whether the radiation detecting unit is exposed to a radiation.
    Type: Application
    Filed: October 23, 2015
    Publication date: August 10, 2017
    Inventors: Choul Woo SHIN, Won Chul KO, Sung Hoon LIM, Jin Hyun CHOI
  • Publication number: 20140341865
    Abstract: There is provided a dressing for treating a wound. The dressing for healing a wound can be useful in maintaining a moisture environment at a wound site using a biocompatible polymer scaffold, and effectively promoting healing of a wound by various growth factors secreted by skin cells or stem cells attached to the biocompatible polymer scaffold as well.
    Type: Application
    Filed: December 12, 2012
    Publication date: November 20, 2014
    Applicant: TEGO SCIENCE INC.
    Inventors: Saewha Jeon, Yun Hee Kim, Ho Yun Chung, Jin Hyun Choi, Hankyu Jang
  • Patent number: 8736098
    Abstract: A wind power generation system using the Bernoulli principle having an elongated tube, wind entry and exit openings on opposite ends of a main body of the tube, a central wind passing section of the tube having a smaller diameter than that of the wind entry and exit openings between the opposite ends, support struts spanning the wind entry and exit openings, and left and right power generators arranged centrally of the support struts, with the generators being rotated simultaneously on a single rotation shaft axle. Plural wind turbines are provided left-right symmetrically on the rotation shaft axle, and transverse rotation bearings are provided on the lower and upper part of the wind passing tube, so the tube can pivot into the wind via vanes.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: May 27, 2014
    Inventors: Hae-Yong Choi, Jin-Hyun Choi
  • Patent number: 8179390
    Abstract: A light emitting display includes a substrate, a pixel area, a first power source line to supply a first power signal to each pixel on a first side of the pixel area, a second power source line to supply the first power signal to each pixel on a second side of the pixel area, and an impedance compensator for compensating a difference in a voltage drop between the first power source line and the second power source line. A voltage drop caused by line resistance that depends on the length of the first and second power source line that supply the first power signal to a lower and upper side of a pixel area, respectively, is equalized, thereby minimizing the voltage drop of the first power signal supplied to all pixels, and minimizing non-uniformity of brightness due to the voltage drop differences at each pixel.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: May 15, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Kyoung Soo Lee, Ki Myeong Eom, Jin Hyun Choi
  • Patent number: 8149230
    Abstract: A light emitting display includes a substrate, a pixel area, a first power source line to supply a first power signal to each pixel on a first side of the pixel area, a second power source line to supply the first power signal to each pixel on a second side of the pixel area, and an impedance compensator for compensating a difference in a voltage drop between the first power source line and the second power source line. A voltage drop caused by line resistance that depends on the length of the first and second power source line that supply the first power signal to a lower and upper side of a pixel area, respectively, is equalized, thereby minimizing the voltage drop of the first power signal supplied to all pixels, and minimizing non-uniformity of brightness due to the voltage drop differences at each pixel.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: April 3, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Kyoung Soo Lee, Ki Myeong Eom, Jin Hyun Choi
  • Patent number: 8059069
    Abstract: An organic light emitting diode (OLED) display device, including a pixel unit including a plurality of pixels connected to scan lines and data lines, a scan driver adapted to generate and supply scan signals to the scan lines, a data driver adapted to generate and supply data signals to the data lines, an optical sensor adapted to generate an optical sensor signal to correspond to an intensity of light, and a data conversion unit adapted to compare a predetermined reference value with the optical sensor signal so as to generate a selection signal for selecting one of at least three modes. The data conversion unit may be adapted to store an input image data or a changing data changed from the input image data to correspond with the selection signal. The data driver may generate the data signals to correspond to the input image data or the changing data stored in the data conversion unit.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: November 15, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Hye-jin Shin, Jin-hyun Choi
  • Publication number: 20110156403
    Abstract: A wind power generation system using the Bernoulli principle, includes elongated tube, wind entry and exit openings on opposite ends of a main body of the tube, a central wind passing section of the tube having a smaller diameter than that of the wind entry and exit openings between the opposite ends, support struts spanning the wind entry and exit openings, and left and right power generators arranged centrally of the support struts, with the generators being rotated simultaneously on a single rotation shaft axle. Plural wind turbines are provided left-right symmetrically on the rotation shaft axle, and transverse rotation bearings are provided on the lower and upper part of the wind passing tube, so the tube can pivot into the wind via vanes, thereby doubly increasing power generation efficiency compared to the prior art.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 30, 2011
    Inventors: Hae-Yong CHOI, Jin-Hyun CHOI
  • Patent number: 7808458
    Abstract: A light emitting display displays an image on a display panel having a plurality of scan lines, a plurality of data lines, and a plurality of pixel circuits. In the light emitting display, one of the plurality of pixel circuits includes a light emitting element having a first electrode and a second electrode, and a current detector. The light emitting display further includes: a current estimator for estimating the amount of current flowing through the light emitting element; a controller for outputting a gamma compensation value; and a data driver for generating a data signal.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: October 5, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jin-Hyun Choi, Sung-Chon Park
  • Patent number: 7502021
    Abstract: A stacked structure of a display device is capable of preventing conductive noise due to signal interference by isolating analog and digital output stages and a ground stage onto different layers. A driving device of an organic light emitting display has a scan driver for applying a plurality of scan signals, a data driver for applying a plurality of data signals, and a controller for providing a gradation voltage to the data driver and a scan signal to the scan driver. The stacked structure includes a ground layer, an analog signal-transmission layer for transmitting an analog signal, a digital signal-transmission layer for transmitting a digital signal and a power supply transmission layer for transmitting a power supply voltage. Each of the layers is formed on a different layer. Further, the stacked structure further includes a first mounting layer at a front of the structure on which circuits are mounted and a second mounting layer at a rear thereof on which circuits are mounted.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: March 10, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-Hyun Choi, Kyoung-Soo Lee, Sung-Chon Park
  • Publication number: 20090033601
    Abstract: An organic light emitting display and its driving method includes: a pixel unit divided into a first display region and a second display region; a light emitting control driver outputting in parallel a plurality of light emitting control signals through a plurality of light emitting control lines; a switch unit including a plurality of switches each respectively coupled to one of the plurality of light emitting control lines to switch the transfers of the light emitting control signals to each have a turn-on period and a turn-off period within a period of one frame; and a luminance controller controlling the switching time of the switch unit using image signals and setting the number of switchings of the plurality of light emitting control lines coupled to the first display region differently from that of the plurality of light emitting control lines coupled to the second display region.
    Type: Application
    Filed: April 18, 2008
    Publication date: February 5, 2009
    Inventors: Hyo-jin Lee, Il-han Lee, Jin-Hyun Choi
  • Publication number: 20080266282
    Abstract: A light emitting display includes a substrate, a pixel area, a first power source line to supply a first power signal to each pixel on a first side of the pixel area, a second power source line to supply the first power signal to each pixel on a second side of the pixel area, and an impedance compensator for compensating a difference in a voltage drop between the first power source line and the second power source line. A voltage drop caused by line resistance that depends on the length of the first and second power source line that supply the first power signal to a lower and upper side of a pixel area, respectively, is equalized, thereby minimizing the voltage drop of the first power signal supplied to all pixels, and minimizing non-uniformity of brightness due to the voltage drop differences at each pixel.
    Type: Application
    Filed: July 9, 2008
    Publication date: October 30, 2008
    Inventors: Kyoung Soo Lee, Ki Myeong Eom, Jin Hyun Choi
  • Publication number: 20080204375
    Abstract: An organic light emitting diode (OLED) display device, including a pixel unit including a plurality of pixels connected to scan lines and data lines, a scan driver adapted to generate and supply scan signals to the scan lines, a data driver adapted to generate and supply data signals to the data lines, an optical sensor adapted to generate an optical sensor signal to correspond to an intensity of light, and a data conversion unit adapted to compare a predetermined reference value with the optical sensor signal so as to generate a selection signal for selecting one of at least three modes. The data conversion unit may be adapted to store an input image data or a changing data changed from the input image data to correspond with the selection signal. The data driver may generate the data signals to correspond to the input image data or the changing data stored in the data conversion unit.
    Type: Application
    Filed: January 10, 2008
    Publication date: August 28, 2008
    Inventors: Hye-jin Shin, Jin-hyun Choi
  • Patent number: 7321350
    Abstract: An image display having a display panel including pixels in a matrix pattern, anodes formed corresponding to the pixels, a cathode in common with the anodes, EL elements provided between the anode and the cathode and including a light emitting layer, and TFTs for controlling the current supply to the EL elements. The display also has a scan driver for selecting pixel lines on the display panel, a data driver for applying RGB display signals corresponding to a pixel line of the display panel when the pixel line is selected, and a display controller for using a current value fed back by the common cathode and externally input RGB data to correct a white gray level of the RGB data and to generate RGB display data to the data driver.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: January 22, 2008
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae-Sung Lee, Choon-Yul Oh, Do-Hyung Ryu, Jin-Hyun Choi
  • Patent number: 7304655
    Abstract: An image display apparatus with pixels where each of the pixels has a light emitting element such as an organic EL (electro-luminescence) element. The brightness of the light emitting element is controlled by the current flowing in the light emitting element. The image display apparatus adjusts the amplitude of the white gray levels in accordance with average brightness of a screen displayed by RGB data.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: December 4, 2007
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jin-Hyun Choi, Choon-Yul Oh, Jae-Sung Lee
  • Publication number: 20060027822
    Abstract: A light emitting display displays an image on a display panel having a plurality of scan lines, a plurality of data lines, and a plurality of pixel circuits. In the light emitting display, one of the plurality of pixel circuits includes a light emitting element having a first electrode and a second electrode, and a current detector. The light emitting display further includes: a current estimator for estimating the amount of current flowing through the light emitting element; a controller for outputting a gamma compensation value; and a data driver for generating a data signal.
    Type: Application
    Filed: May 27, 2005
    Publication date: February 9, 2006
    Inventors: Jin-Hyun Choi, Sung-Chon Park