Patents by Inventor Chang-geun Ahn

Chang-geun 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).

  • Patent number: 8728312
    Abstract: Disclosed are a method and an apparatus for filtering plasma using magnetic force. The apparatus for filtering plasma using magnetic force includes: an inlet into which blood is injected; a filter unit filtering plasma in the blood passing through the inlet by capillary force; a magnetic force receiving part made of magnetizable materials and assisting plasma filtering by applying pressure to the filter unit by movement due to magnetic force generated from the outside; an outlet discharging plasma filtered from blood; and a filter outer body surrounding the inlet, the filter unit, the magnetic receiving part, and the outlet.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: May 20, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang Hyo Chung, Yo Han Choi, Chang-Geun Ahn, Gun Yong Sung
  • Publication number: 20140132511
    Abstract: The present invention relates to an eye-gaze based control device. The eye-gaze based control device of the present invention may control a control target device according to an eye-gaze point of a user. Here, the eye-gaze based control device controls the control target device by controlling a size of an image displayed to the user, thereby more precisely controlling the control target device.
    Type: Application
    Filed: September 4, 2013
    Publication date: May 15, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: CHANG-GEUN AHN
  • Patent number: 8628650
    Abstract: Provided are a method and apparatus for measuring an isoelectric point using a field effect transistor. The method includes providing a field effect transistor including a substrate, source and drain electrodes disposed on the substrate and spaced apart from each other, and a channel region between the source and drain electrodes, providing a first electrolyte solution having a first concentration to the channel region of the field effect transistor and measuring a first current value of the channel region between the source and drain electrodes, providing a second electrolyte solution having a second concentration greater than the first concentration and measuring a second current value of the channel region between the source and drain electrodes, and determining the isoelectric point of the field effect transistor or a material disposed on the field effect transistor using a difference between the first and second current values.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: January 14, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chil Seong Ah, Ansoon Kim, Chan Woo Park, Chang-Geun Ahn, Jong-Heon Yang, In Bok Baek, Taeyoub Kim, Gun Yong Sung, Seon-Hee Park, Han Young Yu
  • Publication number: 20130331295
    Abstract: Provided is a biosensor chip. The biosensor chip includes a plurality of biosensor cells that are arranged in a matrix and selectively generate and output a sensed signal by addressing of external light, at least one sensing line that is simultaneously connected with the plurality of biosensor cells and transmits the sensed signal from one selected from the biosensor cells, and an output terminal that receives the sensed signal from the sensing line and outputs the sensed signal to an external reader. Thus, the biosensor cells are set in array in the biosensor chip without a separate driving unit, so that a process of manufacturing the biosensor chip is simplified. The biosensor cell to be sensed is selectively addressed through the external light, so that it is possible to reduce a price of the biosensor chip used as a disposable chip.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Chang Geun AHN, Chan Woo PARK, Jong Heon YANG, Tae Youb KIM, Chil Seong AH, An Soon KIM, Bong Kyu KIM, Gun Yong SUNG, Seon Hee PARK
  • Patent number: 8529750
    Abstract: Provided are an apparatus and method for detecting biomolecules. The apparatus includes a FET having a substrate, a source electrode, a drain electrode, a channel region between the source and drain electrodes, and probe molecules fixed to the channel region, wherein the source and drain electrodes are separated on the substrate, a microfluid supplier selectively supplying one of a reference buffer solution of low ionic concentration and a reaction solution of high ionic concentration containing target molecules, to the channel region of the FET to which the probe molecules are fixed, and a biomolecule detector detecting the target molecules by measuring a first current value of the channel region of the FET, and a second current value of the channel region of the FET to which the target molecules and the probe molecules that bind to each other in the reaction solution of high ionic concentration are fixed.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: September 10, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chil-Seong Ah, Ansoon Kim, Chan-Woo Park, Chang-Geun Ahn, Jong-Heon Yang, In-Bok Baek, Taeyoub Kim, HyeKyoung Yang, Gun-Yong Sung, Seon-Hee Park, Han-Young Yu, Moon-Gyu Jang
  • Publication number: 20130213300
    Abstract: Disclosed is a semiconductor manufacturing apparatus including at least one pocket on which a passive subject on which deposition will be executed is mounted, and a carrier body having an insertion space to which the at least one pocket is detachably attached. Therefore, the semiconductor manufacturing apparatus shortens process time and reduces process expenses. The semiconductor manufacturing apparatus allows respective pockets to have different structures according to the positions of the pockets on the wafer carrier, and thus achieves uniform growth of a material on the surfaces of wafers regardless of the positions of the pockets.
    Type: Application
    Filed: February 6, 2013
    Publication date: August 22, 2013
    Inventors: Ki Bum SUNG, Jo young Lee, Mihan Joong Kim, Chang Geun Ahn, Jung Hyun Kim
  • Patent number: 8500281
    Abstract: There is provided an apparatus for irradiating a beam at a user's eye gaze point and an operation method thereof. The apparatus includes an eye gaze point detecting part analyzing a movement of a user's pupils and detecting the user's eye gaze point, and a beam irradiation part irradiating a beam at the user's eye gaze point detected by the eye gaze point detecting part. The apparatus detects the user's current eye gaze point and irradiates the beam at the user's detected eye gaze point, thereby allowing for the performance of desired control with greater accuracy.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: August 6, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chang Geun Ahn, Rae Man Park, Gun Yong Sung, Seon Hee Park
  • Patent number: 8426900
    Abstract: Provided is a sensing device, which includes a reactive material layer (260) responding to a specific functional group in a fluid, a sensing capacitor (B) including first and second electrodes disposed on and under an insulating layer (230), the first electrode being disposed under the reactive material layer (260), and a field effect transistor including a gate electrode connected with the first electrode of the sensing capacitor. Here, the reactive material layer (260) is formed in a conductive three-dimensional structure to widen a surface area. Thus, the sensing device may have high sensitivity by maximizing a capacitor sharing effect and a change in voltage amount applied to a gate, which may be caused by widening a surface area of the conductive three-dimensional structure with respect to the fluid flow.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: April 23, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chang Geun Ahn, Chan Woo Park, Jong Heon Yang, In Bok Baek, Chil Seong Ah, An Soon Kim, Tae Youb Kim, Gun Yong Sung
  • Patent number: 8394657
    Abstract: A biosensor using a nanodot and a method of manufacturing the same are provided. A silicon nanowire can be formed by a CMOS process to reduce manufacturing costs. In addition, an electrically charged nanodot is coupled to a target molecule to be detected, in order to readily change conductivity of the silicon nanowire, thereby making it possible to implement a biosensor capable of providing good sensitivity and being manufactured at a low cost.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: March 12, 2013
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae Youb Kim, Chil Seong Ah, Chang Geun Ahn, Han Young Yu, Jong Heon Yang, Moon Gyu Jang
  • Publication number: 20130030288
    Abstract: Provided are an image diagnosis apparatus and an image diagnosis method using the same. The image diagnosis apparatus includes an X-ray image tomosynthesis device fixing an object using an object fixing unit, the X-ray image tomosynthesis device generating an image tomosynthesis signal by irradiating a plurality of X-rays into the object, a photoacoustic image device fixing the object using the object fixing unit, the photoacoustic image device generating an ultrasonic signal by scanning the object using a photoacoustic light source, an image processing device for processing image signals transmitted from the X-ray image tomosynthesis device and the photoacoustic image device to generate a three-dimensional (3D) image, and a display device for displaying the 3D image generated from the image processing device. The image diagnosis apparatus may realize internal tissues of the object into a clear 3D image.
    Type: Application
    Filed: July 24, 2012
    Publication date: January 31, 2013
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jeong Won LEE, Chang-Geun AHN, Sooyeul LEE, Donghoon YU, Seunghwan KIM
  • Publication number: 20120306807
    Abstract: Disclosed is a biosensor, including: a biochip to which a probe molecule is fixed on a wall thereof and into which a target molecule is injected; and a capacitive touch panel for detecting a reaction of the probe molecule in the biochip and the injected target molecule.
    Type: Application
    Filed: May 18, 2012
    Publication date: December 6, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventor: Chang Geun AHN
  • Publication number: 20120258882
    Abstract: Provided is a method for quantitatively detecting biomolecules with high sensitivity for a short time by using nanoparticles and a metal deposition method in an immuno-detection using a well-type plastic substrate.
    Type: Application
    Filed: April 10, 2012
    Publication date: October 11, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Chil Seong Ah, Chang Geun Ahn, Tae Youb Kim, Gun Yong Sung
  • Publication number: 20120253166
    Abstract: Provided is a canal type mini-apparatus insertable in an ear for diagnosing a disease. The canal type mini-apparatus includes a canal body and a protrusion body. The canal body is insertable in an ear and includes a bio-data detection unit at an end thereof The bio-data detection unit is configured to detect biological data from an inside of the ear for diagnosing a disease. The protrusion body is disposed at the other end of the canal body and including a data transceiving unit. The data transceiving unit is configured to control the bio-data detection unit and transmit/receive a signal to/from an analyzing device. When the canal type mini-apparatus is inserted in the ear, at least a portion of the protrusion body protrudes outward from the ear.
    Type: Application
    Filed: January 23, 2012
    Publication date: October 4, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Chang-Geun AHN, Sooyeul Lee
  • Patent number: 8263964
    Abstract: Provided are three-dimensional (3D) nanodevices including 3D nanostructures. The 3D nanodevice includes at least one nanostructure, each nanostructure including an oscillation portion floating over a substrate and support portions for supporting both lengthwise end portions of the oscillation portion, supports disposed on the substrate to support the support portions of each of the nanostructures, at least one controller disposed at an upper portion of the substrate, a lower portion of the substrate, or both the upper and lower portions of the substrate to control each of the nanostructures, and a sensing unit disposed on each of the oscillation portions to sense an externally supplied adsorption material. Thus, unlike in a typical planar device, generation of impurities between a nanodevice and a substrate can be reduced, and mechanical vibration can be caused.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: September 11, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Han Young Yu, Byung Hoon Kim, An Soon Kim, In Bok Baek, Chil Seong Ah, Jong Heon Yang, Chan Woo Park, Chang Geun Ahn
  • Patent number: 8241939
    Abstract: A method for manufacturing a biosensor includes forming a silicon nanowire channel, etching a first conductivity-type single crystalline silicon layer which is a top layer of a Silicon-On-Insulator (SOI) substrate to form a first conductivity-type single crystalline silicon line pattern, doping both sidewalls of the first conductivity-type single crystalline silicon line pattern with impurities of a second conductivity-type opposite to the first conductivity-type to form a second conductivity-type channel, forming second conductivity-type pads for forming electrodes at both ends of the first conductivity-type single crystalline silicon line pattern, forming, in an undoped region of the first conductivity-type single crystalline silicon line pattern, a first electrode for applying a reverse-bias voltage to insulate the first conductivity-type single crystalline silicon line pattern and the second conductivity-type channel from each other, and forming second electrodes for applying a bias voltage across the sec
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: August 14, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chan Woo Park, Chang Geun Ahn, Jong Heon Yang, In Bok Baek, Chil Seong Ah, Han Young Yu, An Soon Kim, Tae Youb Kim, Moon Gyu Jang, Myung Sim Jun
  • Publication number: 20120143513
    Abstract: Provided are a bio sensor chip and a reader thereof. The bio-sensor chip is optically addressed. The bio-sensor chip includes a word line control circuit and a bit line control circuit controlled by light provided from the bio-sensor chip reader. The bio-sensor chip does not require a peripheral circuit for driving word lines and bit lines, simplifying a fabrication process and reducing the area of the chip.
    Type: Application
    Filed: August 26, 2011
    Publication date: June 7, 2012
    Applicant: Electronics and Telecommunications Research
    Inventors: Jong-Heon YANG, Chang-Geun Ahn, Chan Woo Park, Chil Seong Ah, Wan Joong Kim, Kwang Hyo Chung, Yo Han Choi, Gun Yong Sung
  • Publication number: 20120142017
    Abstract: Disclosed is a biosensor device, comprising: a capillary tube with probe molecules immobilized on the inner wall surface thereof, and a liquid sample containing target molecules, said biosensor device being characterized in that a contact angle between the inner wall surface of the capillary tube and the liquid sample changes because of the specific interaction between the probe molecules and the target molecules, which leads, in turn, to a change in the height of the liquid sample in the capillary tube.
    Type: Application
    Filed: November 4, 2011
    Publication date: June 7, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Chan-Woo PARK, Jong-Heon Yang, Chil-Seong Ah, Wan-Joong Kim, Chang-Geun Ahn, Gun-Yong Sung
  • Publication number: 20120138534
    Abstract: Disclosed are a method and an apparatus for filtering plasma using magnetic force. The apparatus for filtering plasma using magnetic force includes: an inlet into which blood is injected; a filter unit filtering plasma in the blood passing through the inlet by capillary force; a magnetic force receiving part made of magnetizable materials and assisting plasma filtering by applying pressure to the filter unit by movement due to magnetic force generated from the outside; an outlet discharging plasma filtered from blood; and a filter outer body surrounding the inlet, the filter unit, the magnetic receiving part, and the outlet.
    Type: Application
    Filed: October 31, 2011
    Publication date: June 7, 2012
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kwang Hyo CHUNG, Yo Han CHOI, Chang-Geun AHN, Gun Yong SUNG
  • Patent number: 8182582
    Abstract: Provided are gas storage medium, a gas storage apparatus having the same and a method thereof. The gas storage medium includes a plurality of material layers each having a variable valence, wherein each of the material layers includes redundant electrons that are not participated in chemical bonding.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: May 22, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Han-Young Yu, Ansoon Kim, Jong-Heon Yang, In-Bok Baek, Chang-Geun Ahn, Chil-Seong Ah, Chan-Woo Park, Seongjae Lee, Taehyoung Zyung
  • Patent number: 8169006
    Abstract: Provided is a bio-sensor chip. The bio-sensor chip includes a sensing part, a board circuit part, a channel part, and a cover. In the sensing part, a target material and a detection material interact with each other to detect the target material. The board circuit part is electrically connected to the sensing part. The channel part provides a solution material containing the target material into the sensing part. The cover is coupled to the board circuit part to cover the channel part and the sensing part.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: May 1, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Taeyoub Kim, Jong-Heon Yang, Chang-Geun Ahn, Chan Woo Park, Chil Seong Ah, Ansoon Kim, In Bok Baek, Gun Yong Sung, Seon Hee Park