Patents by Inventor Kyu Youn

Kyu Youn 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: 20070148588
    Abstract: Disclosed herein is a method of releasing a photoresist film from a substrate, which includes forming a self-assembled monolayer (SAM) on a substrate; coating the SAM with a photoresist film; and rinsing the substrate with an alcohol or an acid. According to the photoresist film releasing method, a photoresist film can be easily released from a substrate without damage after patterning. A method of bonding a released photoresist film with a substrate includes arraying a second substrate and the photoresist film released from a first substrate, and baking the second substrate. According to the bonding method, the photoresist film can be perfectly bonded with a second substrate without generating a crevice even though an additional adhesive is not used.
    Type: Application
    Filed: December 20, 2006
    Publication date: June 28, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chin-sung PARK, Kyu-youn HWANG, Jin-tae KIM, Young-sun LEE
  • Publication number: 20070138025
    Abstract: A microfluidic device includes; an ion exchange membrane, an anode chamber one side of which contacts a surface of the ion exchange membrane, wherein the anode chamber further includes a ladder-shaped anode and an anode support part, and a cathode chamber, one side of which contacts a surface of the ion exchange membrane opposite the anode chamber, wherein the cathode chamber further comprises a cathode, wherein the ladder-shaped anode is formed on a first surface of the anode support part, openings are formed in the anode support part which conform to the shape of the ladder-shaped anode, and a second surface of the anode support part which opposes the first surface of the anode contacts and supports the ion exchange membrane.
    Type: Application
    Filed: November 13, 2006
    Publication date: June 21, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Hun-joo LEE, Joon-ho KIM, Kyu-youn HWANG
  • Publication number: 20070141556
    Abstract: Provided is a method for immobilizing a biomolecule on a solid substrate. The method includes coating the solid substrate with silane anhydride to introduce an anhydride functional group onto a surface of the solid substrate; obtaining a carboxyl group from the anhydride functional group by hydrolysis; reacting the carboxyl group with carbodiimide and succinimide to activate the carboxyl group; and contacting the biomolecule with the solid substrate having the activated carboxyl group on its surface to immobilize the biomolecule on the solid substrate.
    Type: Application
    Filed: February 23, 2007
    Publication date: June 21, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Kyu-youn HWANG
  • Publication number: 20070121625
    Abstract: A method and device for creating/reproducing a multimedia file, and an information recording medium recording the multimedia file are provided. According to the method for creating the multimedia file, multimedia raw data is coded in accordance with characteristics of a device reproducing the multimedia raw data. After that, header information containing device identification (ID) information of the device is attached to the coded multimedia data, so that the multimedia file is created.
    Type: Application
    Filed: October 20, 2006
    Publication date: May 31, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Cheol-kyu Youn, Jung-min Shin
  • Publication number: 20070105057
    Abstract: A method of forming a photoresist pattern, capable of improving an adhesion property of the photoresist pattern formed on a substrate, includes forming a photocatalytic layer on a substrate, forming a negative-type photoresist layer on the photocatalytic layer, exposing the photoresist layer to ultraviolet rays, heat-treating the photoresist layer, and developing the photoresist layer to form the photoresist pattern. Thereby, applying the photocatalytic layer formed on various substrates, the photoresist pattern has excellent adhesion property and is capable of ensuring a high aspect ratio.
    Type: Application
    Filed: October 24, 2006
    Publication date: May 10, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Kyu Youn HWANG, Chin Sung PARK
  • Patent number: 7195924
    Abstract: Provided is a method for immobilizing a biomolecule on a solid substrate. The method includes coating the solid substrate with silane anhydride to introduce an anhydride functional group onto a surface of the solid substrate; obtaining a carboxyl group from the anhydride functional group by hydrolysis; reacting the carboxyl group with carbodiimide and succinimide to activate the carboxyl group; and contacting the biomolecule with the solid substrate having the activated carboxyl group on its surface to immobilize the biomolecule on the solid substrate.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: March 27, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kyu-youn Hwang
  • Publication number: 20070033449
    Abstract: A memory device includes a nonvolatile memory cell array including a plurality of memory cells with a portion of the memory cells to store fuse data, and a fuse register to store the fuse data from the memory cell array. An operation of the memory device is modified in response to the fuse register.
    Type: Application
    Filed: April 28, 2006
    Publication date: February 8, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sang-Won HWANG, Dong-Kyu YOUN
  • Publication number: 20070003967
    Abstract: A method of manufacturing a DNA (deoxyribonucleic acid) chip is provided. The DNA chip has a plurality of transistors formed on a substrate and an organic layer and a DNA probe sequentially stacked on a gate of the transistor. The method includes forming an inter-layer insulation layer on the substrate to cover the transistors, planarizing the inter-layer insulation layer, forming at least two contact holes exposing gate electrodes of the transistors in the inter-layer insulation layer, selectively forming organic layers on the exposed gate electrodes, attaching a first DFR (dry film resist) layer to the upper surface of the inter-layer insulation layer to cover the contact holes, removing a portion of the first DFR layer covering a first contact hole among the contact holes, attaching a first DNA probe to the organic layers in the first contact hole, and removing a remaining portion of the first DFR layer.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 4, 2007
    Inventors: Jeo-young Shim, Soo-suk Lee, Chin-sung Park, Kyu-youn Hwang
  • Publication number: 20060270031
    Abstract: A method of separating cells or viruses from a mixture using phase separation is provided. The method includes: suspending a sample containing cells or viruses in a kosmotropic salt solution having a pH of 3-6; aggregating the cells or viruses by adding a cationic polymer to the suspension; adhering the cells or viruses to a solid substrate with the aid of phase separation of polymer by placing the suspension in contact with the solid substrate; and separating the solid substrate on which the cells or viruses are adhered from the suspension. Accordingly, it is possible to separate a high concentration of cells, even when using a flow control system. In addition, the method can be conveniently applied to lab-on-a-chip technology.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 30, 2006
    Inventors: Kyu-youn Hwang, Hee-kyun Lim, Joon-ho Kim
  • Publication number: 20060264621
    Abstract: Provided is a pH dependent ion exchange material. The pH dependent ion exchange material has at least one monomer selected from the group consisting of M0, M1, M2 and M3 represented by the following formulae, provided that at least one monomer having A and at least one monomer having B are contained therein, the pH dependent ion exchange material having a degree of polymerization of 2-30,000. wherein A is a group —X(CH2)nY, wherein n is an integer from 1 to 10, X is a functional group which can react with an activated ester, and Y is a primary, secondary, tertiary amine or a nitrogen-containing aromatic heterocyclic base, B is a group —X?(CH2)nY?, wherein n is an integer from 1 to 10, X? is a functional group which can react with an activated ester, and Y? is an acid generating group having a pKa value of 4 or less, and R3 is an alkyl group having 1 to 10 carbon atoms.
    Type: Application
    Filed: May 19, 2006
    Publication date: November 23, 2006
    Inventors: Kyu-youn Hwang, Chang-eun Yoo
  • Publication number: 20060240538
    Abstract: A method of separating cells or viruses using alumina is provided. The method includes: contacting a solution containing cells or viruses with alumina; and washing the alumina having cells or viruses bound thereto. According to the method, the separation efficiency of cells or viruses can be increased, the detection limit for cells or viruses can be improved, and a sample can be rapidly prepared.
    Type: Application
    Filed: January 25, 2006
    Publication date: October 26, 2006
    Inventors: Hee-kyun Lim, Chang-eun Yoo, Kyu-youn Hwang, Hun-joo Lee, Joon-ho Kim
  • Publication number: 20060234379
    Abstract: Provided is a method of separating cells using a hydrophobic solid support. The method comprises contacting a solution containing cells with a hydrophobic solid support having a water contact angle between 70 and 90 degrees. By allowing cells to be adsorbed to the hydrophobic solid substrate, the cells can be separated. Thus, the cell separation efficiency can be rapidly and simply increased.
    Type: Application
    Filed: April 17, 2006
    Publication date: October 19, 2006
    Inventors: Hee-kyun Lim, Kyu-youn Hwang, Joon-ho Kim, Kak Namkoong, Chin-sung Park
  • Publication number: 20060228737
    Abstract: Provided are a method of isolating a nucleic acid from a sample and a solid material for isolating the nucleic acid which can be used for the above method. The method includes contacting the sample with a bifunctional material containing an amino group and a carboxyl group at a first pH to bind the nucleic acid to the bifunctional material, the bifunctional material being positively charged at the first pH; and releasing the nucleic acid at a second pH which is higher than the first pH.
    Type: Application
    Filed: April 11, 2006
    Publication date: October 12, 2006
    Inventors: Kyu-youn Hwang, Chang-eun Yoo
  • Publication number: 20060169598
    Abstract: Provided is a method of controlling the pH of a solution using electrolysis in a microfluidic device comprising an electrolysis device including an anode chamber, a cathode chamber, and a partition membrane between the anode chamber and the cathode chamber, wherein the anode chamber includes an inlet and an outlet through which an anode chamber solution enters and is discharged from the anode chamber, respectively, and an electrode, and the cathode chamber includes an inlet and an outlet through which a cathode chamber solution enters and is discharged from the cathode chamber, respectively, and an electrode.
    Type: Application
    Filed: December 16, 2005
    Publication date: August 3, 2006
    Inventors: Hun-joo Lee, Joon-ho Kim, Chang-eun Yoo, Kyu-youn Hwang, Hee-kyun Lim
  • Publication number: 20060166241
    Abstract: Provided are nucleic acid isolation unit and method. The method includes immobilizing an aromatic compound-containing nucleic acid intercalator on a solid support; contacting a first buffer solution containing a nucleic acid sample to be purified to the intercalator immobilized on the solid support to bind the intercalator with nucleic acids contained in the nucleic acid sample; cleaning the resultant structure where the nucleic acids are bound to the intercalator immobilized on the solid support; and eluting the nucleic acids with a second buffer solution.
    Type: Application
    Filed: January 5, 2006
    Publication date: July 27, 2006
    Inventors: Jeo-young Shim, Kyu-youn Hwang, Joon-ho Kim, Sung-ouk Jung, Kyu-tae Yoo, Joon-shik Park, Ji-na Namgoong
  • Publication number: 20060154284
    Abstract: A method of isolating nucleic acid from a sample containing nucleic acid is provided. The method includes contacting the sample with a bifunctional material that contains an amino group and a carboxyl group and is positively charged at a first pH to allow binding of the nucleic acid to the bifunctional material; and extracting the nucleic acid at a second pH higher than the first pH from the complex.
    Type: Application
    Filed: December 23, 2005
    Publication date: July 13, 2006
    Inventors: Kyu-youn Hwang, Joon-ho Kim, Chang-eun Yoo, Hun-joo Lee, Hee-kyun Lim, Sung-young Jeong, Jeo-young Shim
  • Publication number: 20060134675
    Abstract: Provided is a method of isolating and purifying nucleic acids using an immobilized hydrogel or polyethylene glycol (PEG)-hydrogel copolymer. The method includes: immobilizing a functional group-containing hydrogel or PEG-hydrogel copolymer on a substrate; adding a mixed sample solution containing a salt and nucleic acids to the hydrogel- or PEG-hydrogel copolymer-immobilized substrate to bind the nucleic acids to the hydrogel or the PEG-hydrogel copolymer; washing the nucleic acid-bound hydrogel or PEG-hydrogel copolymer; and eluting the nucleic acids from the hydrogel or the PEG-hydrogel copolymer using an elution solvent. Therefore, binding and elution of nucleic acids can be performed even with no addition of a separate chemical substance, and an effect on a subsequent process such as PCR can be minimized. Furthermore, the amount and intensity for binding nucleic acids can be adjusted according to PEG concentration, and the presence of a hydrogel compound on a substrate enables patterning.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 22, 2006
    Inventors: Chang-eun Yoo, Joon-ho Kim, Kyu-youn Hwang, Hun-joo Lee, Hee-kyun Lim, Jun-hong Min
  • Publication number: 20060134777
    Abstract: Provided are a microfluidic device including an electrolysis device for cell lysis which includes an anode chamber, a cathode chamber and a separator, in which the separator is installed between the anode chamber and the cathode chamber, the anode chamber includes an inlet and an outlet for an anode chamber solution and an electrode, and the cathode chamber includes an inlet and an outlet for a cathode chamber solution and an electrode, and a method of electrochemically lysing cells using the same.
    Type: Application
    Filed: December 15, 2005
    Publication date: June 22, 2006
    Inventors: Hun-joo Lee, Joon-ho Kim, Chang-eun Yoo, Hee-kyun Lim, Kyu-youn Hwang, Soo-min Ma, Jun-hong Min
  • Publication number: 20060128402
    Abstract: The present invention relates to a method of implementing a scatternet over a plurality of piconets using different frequencies in a Wireless Personal Area Network (WPAN). In the scatternet implementation method of the present invention, a master of a first piconet transmits a scatternet request to a shared slave, and the shared slave switches a frequency thereof to a frequency of a second piconet and relays the scatternet request to a master of the second piconet. The master of the second piconet transmits scatternet approval to the shared slave. The shared slave switches the frequency to a frequency of the first piconet, relays the scatternet approval to the master of the first piconet, and is allocated resources, which do not overlap each other, by the masters of the first piconet and the second piconet. The shared slave switches frequencies and relays data between the first piconet and the second piconet while synchronizing with both the first piconet and the second piconet using allocated resources.
    Type: Application
    Filed: November 14, 2005
    Publication date: June 15, 2006
    Inventors: Hyeon Lee, Jin Cho, Sun June, Kyu Youn, Yun Won, Tai Kwon
  • Publication number: 20060099711
    Abstract: Provided is a lysis method for cells or viruses, including: immobilizing a metal-ligand complex on a solid support; and mixing the complex immobilized on the support with a cell or virus solution. According to the lysis method, by immobilizing a chemical on a solid support to perform cell lysis, the dilution problem according to the addition of a cell lysis solution can be resolved and a separate process of removing the chemical is not required so as to reduce the steps upon LOC implementation. In addition, since a variety of solid supports, such as chips, beads, nanoparticles etc. can be used, cell lysis apparatuses of various forms can be fabricated.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 11, 2006
    Inventors: Chang-eun Yoo, Joon-ho Kim, Kyu-youn Hwang, Hun-joo Lee, Hee-kyun Lim, Soo-min Ma, Nam Huh, Soo-suk Lee