Patents by Inventor Youn Sang Kim

Youn Sang Kim 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: 11935980
    Abstract: A filtering panel includes a molding layer part; a pattern layer part having an incident surface through which light emitted from a light source and viewing light transmitted to an observer enter, and an accommodation surface which is the reverse surface of the incident surface, wherein the molding layer part is stacked on the incident surface so as to be adjacent thereto, and the pattern layer part adjusts the optical paths of the emitted light and the viewing light; and a filtering layer part formed on a lower incident surface of the pattern layer part having the incident surface of the viewing light that enters from a lower region below a horizontal reference line, wherein the reflectivity of the visible light in the viewing light incident on the lower region is made greater than that of an upper region above the reference line by means of mirror reflection.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: March 19, 2024
    Assignees: POSCO CO., LTD, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Sung-Ju Tark, Kun-Hoon Baek, Jun-Hong Kim, Youn-Joung Choi, Ji-Sang Park
  • Patent number: 10626373
    Abstract: The present disclosure relates to a culture scaffold for promoting differentiation from stem cells or precursor cells into osteoblasts, in which the culture scaffold includes a structure composed of a ridge and a groove, a kit using the culture scaffold, and a method for differentiating stem cells or precursor cells into osteoblasts. The culture scaffold of the present disclosure has an optimal pattern depending on the type of stem cells or precursor cells, thereby improving the osteoblast differentiation potency. In particular, it has a feature of showing excellent osteoblast differentiation potency even if only a small amount of supplementary factors inducing osteoblast differentiation is added. Furthermore, since the osteoblast differentiation potency is not greatly influenced by the change in cell density, it is possible to induce differentiation into osteoblasts without being influenced by the inflammatory environment formed by the inflammatory factors that increase upon cell differentiation.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: April 21, 2020
    Assignee: Seoul National University R&DB Foundation
    Inventors: Hang-Rae Kim, Jin-Hee Kim, Bokyung Kim, Youn Sang Kim, Chang su Kim
  • Patent number: 10270370
    Abstract: The present invention relates to an energy conversion substrate using a liquid and, more specifically, to an energy conversion substrate using a liquid capable of converting mechanical energy into electric energy through a flow of a liquid on a substrate having an energy conversion layer. Thus, the present invention enables easy manufacture and easy liquid circulation to be obtained by implementing an energy conversion device using a liquid through one substrate instead of a pair of opposing substrates and can implement the energy conversion device without a lubricating layer.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: April 23, 2019
    Assignees: KOREA ELECTRONICS TECHNOLOGY INSTITUTE, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Won Keun Kim, Soon Hyung Kwon, Youn Sang Kim, Jun Woo Park
  • Patent number: 10090783
    Abstract: The present invention relates to a method and a device for converting energy using a change of a contact area and a contact angle of liquid and, more specifically, to a method and a device for converting mechanical energy into electric energy by applying a reciprocal phenomenon of electrowetting, wherein liquid and gas are positioned between two facing substrates and energy is converted by using a volume change of a fluid, such that the present invention has the advantages of preventing channel-blocking without requiring all facing electrodes to be patterned, simplifying a device configuration, implementing easy control, and removing the need to apply an external power source.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: October 2, 2018
    Assignees: Korea Electronics Technology Institute, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Soon Hyung Kwon, Won Keun Kim, Chul Jong Han, Jeongno Lee, Youn Sang Kim, Jun Woo Park
  • Patent number: 10050567
    Abstract: The present invention relates to a flexible energy conversion device using a liquid, and more specifically, to a method and a device for converting mechanical energy into electric energy by applying an opposite phenomenon of electrowetting, which can change a surface contacting the liquid between one pair of electrodes, and use the change of the surface contacting the liquid to generate electric energy, so as to prevent channel blocking or so that a lubricating layer or electrodes patterned onto a channel in a complicated manner are not required, thereby enabling simplification of the device, reduction of manufacturing cost, and the energy conversion device that is less faulty.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: August 14, 2018
    Assignees: Korea Electronics Technology Institute, SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION
    Inventors: Soon Hyung Kwon, Won Keun Kim, Chul Jong Han, Jeong No Lee, Youn Sang Kim, Jun Woo Park
  • Patent number: 9998034
    Abstract: The present invention relates to an energy conversion device using a liquid and, more specifically, to a method and a device for converting mechanical energy into electrical energy by applying an opposite phenomenon to an electrowetting phenomenon. The contact surface with liquid is being changed within a pair of electrodes, and the resulting change in the contact surface with liquid is being utilized for generating electrical energy. The device can be simplified and the manufacturing cost thereof is being reduced, furthermore it is effective in implementing an energy conversion device that is less faulty, by preventing channel blocking phenomenon and not requiring a lubricating layer or an electrode complicatedly patterned on a channel. Besides, it is advantageous in that a flexible device can be realized and a large area application is facilitated by simplifying the device structure.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: June 12, 2018
    Assignee: Korean Electronics Technology Institute
    Inventors: Soon Hyung Kwon, Young Hoon Kim, Min Suk Oh, Ji Wan Kim, Byung Wook Yoo, Youn Sang Kim, Jun Woo Park
  • Patent number: 9954463
    Abstract: The present invention relates to an energy conversion device using a change of a contact surface with liquid and, more specifically, to a method and a device for converting mechanical energy into electrical energy by applying an opposite phenomenon to an electrowetting phenomenon. The energy conversion device having a simplified structure and reduced manufacturing costs with minimal malfunctions by changing a contact surface with liquid between a pair of electrodes and using the change of the contact surface with the liquid to generate electrical energy such that channel blocking can be prevented or a lubricating layer or electrodes complicatedly patterned on a channel are not required.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: April 24, 2018
    Assignee: Korea Electronics Technology Institute
    Inventors: Soon Hyung Kwon, Young Hoon Kim, Min Suk Oh, Ji Wan Kim, Byung Wook Yoo, Youn Sang Kim, Jun Woo Park
  • Publication number: 20180066230
    Abstract: The present disclosure relates to a culture scaffold for promoting differentiation from stem cells or precursor cells into osteoblasts, in which the culture scaffold includes a structure composed of a ridge and a groove, a kit using the culture scaffold, and a method for differentiating stem cells or precursor cells into osteoblasts. The culture scaffold of the present disclosure has an optimal pattern depending on the type of stem cells or precursor cells, thereby improving the osteoblast differentiation potency. In particular, it has a feature of showing excellent osteoblast differentiation potency even if only a small amount of supplementary factors inducing osteoblast differentiation is added. Furthermore, since the osteoblast differentiation potency is not greatly influenced by the change in cell density, it is possible to induce differentiation into osteoblasts without being influenced by the inflammatory environment formed by the inflammatory factors that increase upon cell differentiation.
    Type: Application
    Filed: July 7, 2017
    Publication date: March 8, 2018
    Inventors: Hang-Rae Kim, Jin-Hee Kim, Bokyung Kim, Youn Sang Kim, Chang su Kim
  • Publication number: 20150340970
    Abstract: The present invention relates to a flexible energy conversion device using a liquid, and more specifically, to a method and a device for converting mechanical energy into electric energy by applying an opposite phenomenon of electrowetting, which can change a surface contacting the liquid between one pair of electrodes, and use the change of the surface contacting the liquid to generate electric energy, so as to prevent channel blocking or so that a lubricating layer or electrodes patterned onto a channel in a complicated manner are not required, thereby enabling simplification of the device, reduction of manufacturing cost, and the energy conversion device that is less faulty.
    Type: Application
    Filed: November 27, 2013
    Publication date: November 26, 2015
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Korea Electronics Technology Institute
    Inventors: Soon Hyung KWON, Won Keun KIM, Chul Jong HAN, JeongNo LEE, Youn Sang KIM, Jun Woo PARK
  • Publication number: 20150303831
    Abstract: The present invention relates to an energy conversion device using a liquid and, more specifically, to a method and a device for converting mechanical energy into electrical energy by applying an opposite phenomenon to an electrowetting phenomenon. The contact surface with liquid is being changed within a pair of electrodes, and the resulting change in the contact surface with liquid is being utilized for generating electrical energy. The device can be simplified and the manufacturing cost thereof is being reduced, furthermore it is effective in implementing an energy conversion device that is less faulty, by preventing channel blocking phenomenon and not requiring a lubricating layer or an electrode complicatedly patterned on a channel. Besides, it is advantageous in that a flexible device can be realized and a large area application is facilitated by simplifying the device structure.
    Type: Application
    Filed: November 27, 2013
    Publication date: October 22, 2015
    Inventors: Soon Hyung KWON, Young Hoon KIM, Min Suk OH, Ji Wan KIM, Byung Wook YOO, Youn Sang KIM, Jun Woo PARK
  • Publication number: 20150295516
    Abstract: The present invention relates to an energy conversion device using a change of a contact surface with liquid and, more specifically, to a method and a device for converting mechanical energy into electrical energy by applying an opposite phenomenon to an electrowetting phenomenon. The energy conversion device having a simplified structure and reduced manufacturing costs with minimal malfunctions by changing a contact surface with liquid between a pair of electrodes and using the change of the contact surface with the liquid to generate electrical energy such that channel blocking can be prevented or a lubricating layer or electrodes complicatedly patterned on a channel are not required.
    Type: Application
    Filed: November 25, 2013
    Publication date: October 15, 2015
    Applicant: Korea Electronics Technology Institute
    Inventors: Soon Hyung Kwon, Young Hoon Kim, Min Suk Oh, Ji Wan Kim, Byung Wook Yoo, Youn Sang Kim, Jun Woo Park
  • Publication number: 20150123513
    Abstract: The present invention relates to an energy conversion substrate using a liquid and, more specifically, to an energy conversion substrate using a liquid capable of converting mechanical energy into electric energy through a flow of a liquid on a substrate having an energy conversion layer. Thus, the present invention enables easy manufacture and easy liquid circulation to be obtained by implementing an energy conversion device using a liquid through one substrate instead of a pair of opposing substrates and can implement the energy conversion device without a lubricating layer.
    Type: Application
    Filed: December 18, 2013
    Publication date: May 7, 2015
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Korea Electronics Technology Institute
    Inventors: Won Keun Kim, Soon Hyung Kwon, Youn Sang Kim, Jun Woo Park
  • Publication number: 20150061459
    Abstract: The present invention relates to a method and a device for converting energy using a change of a contact area and a contact angle of liquid and, more specifically, to a method and a device for converting mechanical energy into electric energy by applying a reciprocal phenomenon of electrowetting, wherein liquid and gas are positioned between two facing substrates and energy is converted by using a volume change of a fluid, such that the present invention has the advantages of preventing channel-blocking without requiring all facing electrodes to be patterned, simplifying a device configuration, implementing easy control, and removing the need to apply an external power source.
    Type: Application
    Filed: October 30, 2013
    Publication date: March 5, 2015
    Applicants: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Korea Electronics Technology Institute
    Inventors: Soon Hyung Kwon, Won Keun Kim, Chul Jong Han, Jeongno Lee, Youn Sang Kim, Jun Woo Park
  • Patent number: 8129849
    Abstract: Disclosed are a semiconductor package and a method of making the same. In the semiconductor package, a substrate and a semiconductor die are covered with and encapsulated by vertically pressing thermosetting resin having fluidity in a predetermined temperature range and denaturalizing itself in gel. Thus, it is possible to reduce a thickness of the semiconductor package and prevent wire sweeping.
    Type: Grant
    Filed: October 28, 2009
    Date of Patent: March 6, 2012
    Assignee: Amkor Technology, Inc.
    Inventors: Youn Sang Kim, Bong Chan Kim, Yoon Joo Kim
  • Patent number: 7981237
    Abstract: A micro- or nano-fluidic chip fabricated with a Norland Optical Adhesive (NOA), an acrylated polyurethane-based UV-polymerizable optical adhesive. The micro- or nano-fluidic chip has sequentially an inlet, a channel, and an outlet. The channel has a pillar in the region of the outlet to prevent beads from flowing out, and the surface of the channels in the micro- or nano-fluidic chip is hydrophilic, which generates spontaneous flow in the channels by a capillary force without any extra external pumping.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: July 19, 2011
    Assignee: Ewha University-Industry Collaboration Foundation
    Inventors: Sung Su Park, So Hyun Kim, Youn Sang Kim, Seong Won Nam, Kang Mu Lee
  • Publication number: 20100053513
    Abstract: In a method of manufacturing a display substrate, a color filter is formed on a first substrate including a switching element. A pixel electrode is formed on the first substrate including the color filter. An inorganic alignment layer including an inorganic compound is formed on the first substrate including the pixel electrode. Thus, impurities generated from the color filter may be blocked from flowing into a liquid crystal layer, and liquid crystal molecules of the liquid crystal layer may be aligned by the inorganic layer.
    Type: Application
    Filed: July 1, 2009
    Publication date: March 4, 2010
    Inventors: Soon-Joon Rho, Baek-Kyun Jeon, Hee-Keun Lee, Hong-Koo Baik, Youn-Sang Kim, Jong-Bok Kim, Byoung-Har Hwang, Chu-Ji Choi, Min-Jung Lee
  • Patent number: 7633144
    Abstract: Disclosed are a semiconductor package and a method of making the same. In the semiconductor package, a substrate and a semiconductor die are covered with and encapsulated by vertically pressing thermosetting resin having fluidity in a predetermined temperature range and denaturalizing itself in gel. Thus, it is possible to reduce a thickness of the semiconductor package and prevent wire sweeping.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: December 15, 2009
    Assignee: Amkor Technology, Inc.
    Inventors: Youn Sang Kim, Bong Chan Kim, Yoon Joo Kim
  • Publication number: 20080253929
    Abstract: The present invention relates to a micro- or nano-fluidic chip fabricated with a NOA. Said micro- or nano-fluidic chip comprises sequentially an inlet, a channel, and an outlet, wherein the channel has pillar in the region of the outlet to prevent beads from flowing out. The surface of channels in the micro- or nano-fluidic chip of the invention is hydrophilc, which generates spontaneous flow in the channels by a capillary force without any extra external pumping.
    Type: Application
    Filed: October 12, 2007
    Publication date: October 16, 2008
    Applicant: EWHA UNIVERSITY- INDUSTRY COLLABORATION FOUNDATION
    Inventors: Sung Su PARK, So Hyun KIM, Youn Sang KIM, Seong Won NAM, Kang Mu LEE
  • Patent number: 7408254
    Abstract: A semiconductor device has a substrate having first, second, and third surfaces. An electrically conductive pattern is formed on the first surface. A semiconductor die has a bond pad formed on a first surface thereof. A second surface of the semiconductor die is coupled to the first surface of the substrate. A first connection member electrically couples the bond pad and the electrically conductive pattern. A first land has a first, second, and third surfaces. The second surface of the first land is coupled to the first electrically conductive pattern. A first encapsulant encapsulates the first semiconductor die, the first connection member, and the first land such that the first surface of the first land is exposed.
    Type: Grant
    Filed: August 26, 2005
    Date of Patent: August 5, 2008
    Inventors: Bong Chan Kim, Yoon Joo Kim, Youn Sang Kim
  • Patent number: 6750073
    Abstract: A mask pattern is formed on a substrate by using a solvent absorbent mold having a pattern structure with a relief and an intaglio portion. A mask layer dissolved in a solvent to obtain fluidity is prepared on the substrate. The mold is pressed onto the mask layer with a predetermined pressure, and a portion of the mask layer that contacts with the relief portion of the mold is introduced into the intaglio portion thereof. Then, the mold absorbs the solvent contained in the mask layer to thereby solidify the mask layer. Next, the mold is separated from the substrate and the portion of the mask layer that contacts with the relief portion of the mold is removed, thus finally obtaining the desired minute mask pattern.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: June 15, 2004
    Assignee: Minuta Technology Co., Ltd.
    Inventors: Hong Hie Lee, Youn Sang Kim, Tae Wan Kim, Pil Jin Yoo