Patents by Inventor Sung Ahn

Sung Ahn 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: 20150205432
    Abstract: A touch sensor including driving electrodes, sensing electrodes, a memory, and a driver. The sensing electrodes intersect the driving electrodes. The memory stores a code matrix including driving codes respectively set for the driving electrodes and driving periods. The driver supplies driving signals to the driving electrodes with reference to the code matrix. In the touch sensor, the code matrix is configured with m rows and n columns, where m is an integer greater than or equal to 2, and n=m?1.
    Type: Application
    Filed: December 29, 2014
    Publication date: July 23, 2015
    Inventors: Soon-Sung AHN, Ja-Seung Ku, Hyoung-Wook Jang
  • Publication number: 20150159265
    Abstract: Provided herein is a metal chalcogenide thin film and a method for preparing the metal chalcogenide thin film, the method including forming a metal layer on a substrate; and forming a metal chalcogenide thin film by inserting the substrate into a chamber for low temperature vapor deposition, injecting a gas containing chalcogen atoms and an argon gas into the chamber, generating a plasma such that chalcogen atoms decomposed by the plasma chemically combine with metal atoms constituting the metal layer to form the metal chalcogenide thin film.
    Type: Application
    Filed: December 10, 2014
    Publication date: June 11, 2015
    Applicant: Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Tae Sung KIM, Chi Sung AHN, Changgu LEE, Hyeongu KIM, Jinhwan LEE, Girish ARABALE
  • Patent number: 9046944
    Abstract: A touch screen panel includes a plurality of driving electrodes, a plurality of sensing electrodes crossing the driving electrodes, a driver for supplying a driving signal to the driving electrodes in a touch recognizing mode, and a controller for receiving signals from the sensing electrodes. In a noise measuring mode, the controller is configured to cut off an electrical connection between one of the driving electrodes and the driver or between one of the sensing electrodes and the controller, maintain an electrical connection between another one of the sensing electrodes and the controller, and detect a noise signal from the other one of the sensing electrodes. The touch screen panel and a driving method of the touch screen panel can increase or maximize the reception sensitivity of outside noise.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: June 2, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventor: Soon-Sung Ahn
  • Publication number: 20150123933
    Abstract: A display device, including an upper substrate, a plurality of sense wires disposed on the upper substrate, a plurality of sense pads disposed on the upper substrate, a plurality of first connection units disposed on the upper substrate, a lower substrate, a display unit including a plurality of display elements, disposed on the lower substrate, multiplexer units disposed on the lower substrate, a touch panel driver integrated circuit connected to the multiplexer units, and conductive members electrically connecting the plurality of first connection units and the plurality of second connection units, respectively, wherein each of the plurality of sense wires is connected with each of the plurality of sense pads, and one end of each of the plurality of sense wires is connected to each of the plurality of first connection units, respectively, and the multiplexer units each include a plurality of second connection units.
    Type: Application
    Filed: April 1, 2014
    Publication date: May 7, 2015
    Inventors: Hyoung Wook JANG, Soon Sung Ahn
  • Patent number: 9024885
    Abstract: A touch screen display apparatus includes a panel including a light emitting device for displaying a display image and an optical sensor for generating a touch image object; a touch sensing unit on the panel for sensing a touch of a touch object; and a light emission controller for controlling the light emitting device to emit light when a touch of the touch object is sensed by the touch sensing unit.
    Type: Grant
    Filed: October 12, 2009
    Date of Patent: May 5, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon-Sung Ahn, Sung-Un Park, Ja-Seung Ku, Brent Jang
  • Publication number: 20150109244
    Abstract: A capacitive type touch sensor, includes a plurality of driving electrodes, a plurality of sensing electrodes disposed to overlap the driving electrodes, the sensing electrodes and the driving electrodes being spaced apart from each other, a driving unit configured to supply driving signals to the respective driving electrodes, and a sensing unit configured to detect sensing signals from the sensing electrodes, wherein the driving signals supplied by the driving unit include at least one of a first driving signal having a first frequency and a second driving signal having a second frequency different from the first frequency.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 23, 2015
    Inventors: Hyoung-Wook JANG, Soon-Sung Ahn, Ja-seung Ku
  • Patent number: 9001095
    Abstract: A reference voltage setting apparatus including: a current generator having a first device to supply a first dark current and a second device to supply a second dark current; a first operational amplifying unit connected to the current generator; and a voltage setting unit connected to the first operational amplifying unit and setting a reference voltage having a compensated offset voltage of the first operational amplifying unit, and an illumination sensing device and a display device including the reference voltage setting apparatus.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Un Park, Soon-Sung Ahn, Do-Youb Kim
  • Publication number: 20150080617
    Abstract: Disclosed is a method for preparing a metal fluoride catalyst as a dehydrofluorination catalyst having high activity under a mild condition using a trifluoroacetic acid solution with no use of HF gas having fluidity and corrosive property. Disclosed also is a dehydrofluorination method for preparing HFO-1225ye from HFP-236ea by using the catalyst with high efficiency.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 19, 2015
    Applicant: Korea Institute of Science and Technology
    Inventors: Hilman Hutama, Jeong-Myeong HA, Chang Soo KIM, Hong Gon KIM, Jae Wook CHOI, Dong Jin SUH, Hyun Joo LEE, Byoung Sung AHN
  • Patent number: 8969600
    Abstract: Disclosed is a method for producing glycidol by decarboxylation of glycerol carbonate. In the method, an ionic liquid catalyst is added for the reaction. According to the method glycidol can be produced in high yield and selectivity. The method enables the production of glycidol in an easy, simple and environmentally friendly way.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: March 3, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Hyun Joo Lee, Sang Deuk Lee, Byoung Sung Ahn, Chang Soo Kim, Ji Sik Choi
  • Publication number: 20150045589
    Abstract: Provided is a palladium on carbon (Pd/C) catalyst obtained by using an ionic liquid, a method for preparing the same, and a method for hydrogenation of hydrofluorocarbon using the same. More particularly, palladium particles are supported on carbon particles by using an ionic liquid, and the resultant Pd/C catalyst is used for hydrogenation of hydrofluorocarbon. The catalyst includes palladium particles having a smaller particle size and a more uniform shape as compared to the existing Pd/C catalysts, and thus shows high catalytic activity.
    Type: Application
    Filed: October 21, 2013
    Publication date: February 12, 2015
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chang Soo KIM, Kyesang YOO, Byoung Sung AHN, Hyun Joo LEE, Jeong Myeong HA, Hong Gon KIM
  • Publication number: 20150042546
    Abstract: The present invention relates to a technology for outputting a gamma voltage in a source driver of a display device. A gamma voltage generation circuit of a source driver in accordance with the present invention may form wide high and low gamma voltage ranges even when a negative power supply voltage and a positive power supply voltage are asymmetrical to each other.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Inventors: Yong Sung AHN, Jung Min Choi
  • Patent number: 8946113
    Abstract: The present invention relates to an Fe-modified perovskite-type catalyst, a method for preparing same and a method for preparing a synthesis gas by a combined reforming reaction using same. More particularly, it relates to a catalyst for a combined natural gas/steam/carbon dioxide reforming reaction having a perovskite structure with La and Sr introduced at the A site and Ni and Fe introduced at the B site with specific molar ratios and a method for producing a synthesis gas for Fischer-Tropsch synthesis or methanol synthesis using the catalyst by the combined reforming reaction. The catalyst of the present invention exhibits higher carbon dioxide conversion rate, significantly reduced catalyst deactivation caused by carbon deposition and improved long-term catalyst stability and activity, as compared to the existing catalyst for reforming reaction prepared by the impregnation method.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: February 3, 2015
    Assignee: Korea Institute of Science and Technology
    Inventors: Dong Ju Moon, Eun Hyeok Yang, Jin Hee Lee, Hyun Jin Kim, Byoung Sung Ahn, Sang Woo Kim, Jae Sun Jung
  • Publication number: 20150021637
    Abstract: A display panel includes a plurality of unit pixels, where each of the unit pixels has a hexagonal-shape and includes: a first sub-pixel configured to emit a first color light, where the first sub-pixel has a rhombus-shape; a second sub-pixel configured to emit a second color light, where the second sub-pixel has the rhombus-shape; and a third sub-pixel configured to emit a third color light, where the third sub-pixel has the rhombus-shape, where first sub-pixels, second sub-pixels or third sub-pixels of neighboring unit pixels in a same row are arranged to adjoin each other.
    Type: Application
    Filed: July 21, 2014
    Publication date: January 22, 2015
    Inventors: Soon-Sung AHN, Hyung-Soo KIM
  • Publication number: 20140377814
    Abstract: The present invention relates to a method for biologically treating carbon dioxide using the sulfur-oxidizing chemolithoautotroph Sulfurovum lithotrophicum 42BKT. The method of the present invention may enable carbon dioxide to be fixed or converted in high-concentration and high-pressure conditions which do not allow the biological photosynthetic conversion of microalgae or the like, and may exhibit high efficiency in the fixation of carbon dioxide as compared to existing methods for biologically treating carbon dioxide using microalgae. Further, the method of the present invention may use a gas mixture without a process of separating nitrogen and other gases, thus simplifying the process of the fixation or conversion of carbon diode.
    Type: Application
    Filed: September 20, 2012
    Publication date: December 25, 2014
    Inventors: Chang Ha Lee, Ik Sung Ahn, Hyuk Sung Kwon, Jae Hyuk Lee
  • Publication number: 20140362047
    Abstract: The present invention introduces a touch sensing circuit that adjusts a reception frequency band, which adjusts a width of a reception frequency band of a driving signal applied from a driving electrode of a touch screen panel and transferred to a reception electrode of the touch screen panel. The touch sensing circuit adjusts the width of the reception frequency band of the driving signal, which is applied from the driving electrode of the touch screen panel and transferred to the reception electrode of the touch screen panel, by using a high pass filter prepared in the form of a differentiator and a low pass filter prepared in the form of an integrator. In the present invention, resistance values of a plurality of embedded resistors and capacitance of a capacitor are adjusted, so that a driving signal is selectively received according to frequencies, and a received driving signal is amplified with a predetermined amplitude.
    Type: Application
    Filed: December 28, 2012
    Publication date: December 11, 2014
    Inventors: Yong-Sung Ahn, Hee-Sop Song, Yong-Suk Kim, Hyung-Seog Oh
  • Publication number: 20140349836
    Abstract: The present invention relates to a method for preparing a nickel-based catalyst for steam carbon dioxide reforming (SCR) of natural gas using steam and carbon dioxide, more particularly to a method for preparing a nickel-based catalyst represented by Ni/?-Al2O3, which is prepared by supporting nickel on a spherical ?-alumina support having many acid sites at high density by repeating impregnation and drying tens of times. The catalyst prepared according to the present invention exhibits superior catalytic activity when used in steam carbon dioxide reforming reaction (SCR) even under harsh conditions of high temperature and high pressure and hardly exhibits carbon deposition due to superior durability.
    Type: Application
    Filed: April 30, 2014
    Publication date: November 27, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong Ju MOON, Jae Sun JUNG, Eun Hyeok YANG, Sang Woo KIM, Jae Suk LEE, Bang Hee KIM, Jong Tae JUNG, Hyun Jin KIM, Ga Ram CHOI, Byoung Sung AHN
  • Publication number: 20140333577
    Abstract: A touch sensing device includes: a capacitive-type touch sensor, a pressure sensor, a touch coordinate detecting unit, and a direction vector calculating unit. The capacitive-type touch sensor is configured to detect a first aspect of a touch input. The pressure sensor is configured to detect a second aspect of the touch input. The touch coordinate detecting unit is configured to, based on the first and second aspects, determine a touch coordinate associated with the capacitive-type touch sensor and a touch coordinate associated with the pressure sensor. The direction vector calculating unit is configured to determine a direction vector based on the respective touch coordinates.
    Type: Application
    Filed: May 5, 2014
    Publication date: November 13, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventor: Soon-Sung AHN
  • Publication number: 20140313157
    Abstract: A touch sensing apparatus includes a touch screen panel including first electrodes along a first direction and second electrodes along a second direction crossing the first direction to form capacitances with the first electrodes, a driving circuit configured to supply a driving signal to the first electrodes; and a sensing circuit configured to detect output sensing signals from the second electrodes and recognize a touch input based on the output sensing signals. The sensing circuit includes a switching unit configured to modulate the output sensing signals by providing codes as respective input sensing signals to the second electrodes, an amplifying unit configured to amplify the modulated sensing signals, an analog-digital conversion unit configured to convert the amplified sensing signals into digital sensing signals, and a controller configured to demodulate the digital sensing signals and detect a touch input and its position from the demodulated sensing signals.
    Type: Application
    Filed: September 13, 2013
    Publication date: October 23, 2014
    Applicants: Ulsan National Institute of Science and Technology (UNIST), Samsung Display Co., Ltd.
    Inventors: Soon-Sung Ahn, Franklin Bien, Jae-Joon Kim, Sang-Hyune Heo, Kyeong-Hwan Park
  • Patent number: 8854354
    Abstract: A power supply circuit of a liquid crystal display device includes a first positive polarity charge charging unit including a first capacitor connected to positive and negative power terminals through switches to charge a charge, a second positive polarity charge charging unit including a second capacitor connected to the positive power terminal and a ground terminal through switches to charge a charge, a first positive polarity charge loading unit loading the charge supplied through the positive power terminal to a negative polarity terminal, a second positive polarity charge loading unit loading the charge charged in the first capacitor to a negative polarity terminal, a third positive polarity charge loading unit loading the charge charged in the second capacitor, and a positive polarity charge charging/loading control unit outputting charging control signals with a same phase to the switches, and periodically or irregularly changing durations of the charging and loading control signals.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: October 7, 2014
    Assignee: Silicon Works Co., Ltd.
    Inventors: Yong Sung Ahn, Jung Min Choi, Sang Rok Cha, Dae Keun Han, Hyung Seog Oh, Yong Suk Kim
  • Publication number: 20140296523
    Abstract: There are provided an ionic liquid having ether group(s) in which a copper(I) compound is included, a method for preparing the same, and a method for removing traces amounts of acetylene-based hydrocarbon compounds included in olefin by absorption or extraction using the same. When the disclosed solution is used, oxidation of Cu(I) to Cu(II) is prevented since CuX is stabilized by the ionic liquid. Thus, selective removal efficiency of acetylenic compounds is improved greatly while the removal performance is retained for a long period of time. Further, since the solution according to the present disclosure is applicable as an extractant as well as an absorbent, the associated operation is simple and apparatus cost can be decreased.
    Type: Application
    Filed: June 19, 2014
    Publication date: October 2, 2014
    Inventors: Hyun Joo Lee, Byoung Sung Ahn, Hoon Sik Kim, Jin-Hyung Kim, Gyeong Taek Gong