Patents by Inventor Chang Youn Lee

Chang Youn Lee 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).

  • Raw material feed hopper and single crystal growth system
    Patent number: 11982013
    Abstract: A raw material feed hopper according to the present embodiment may include a hollow tube having a raw material accommodating space formed therein, a supporter supporting the hollow tube, a cone accommodated in the raw material accommodating space so as to be able to lift up and down, a rod connected to the cone, a connector connected to an upper portion of the rod, a lifting rod connected to the connector, and an elevator installed on the supporter for lifting up and down the lifting rod.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: May 14, 2024
    Assignee: SK SILTRON CO., LTD.
    Inventors: Sang Heon Lee, Chang Youn Lee, Cheol Hwan Kim
  • Display device with light control layer and manufacturing method thereof
    Patent number: 11937484
    Abstract: A display device and method of manufacturing same includes: a display panel having a pixel area and a peripheral area adjacent to the pixel area, a light control layer disposed on the display panel and at least partially overlapping the pixel area, a light blocking portion at least partially overlapping the peripheral area, and a protective layer disposed between the light control layer and the light blocking portion.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: March 19, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Keunwoo Park, Min-Jae Kim, Min-Hee Kim, Taehoon Kim, DoKyung Youn, Chang-Hun Lee
  • RAW MATERIAL FEED HOPPER AND SINGLE CRYSTAL GROWTH SYSTEM
    Publication number: 20220228289
    Abstract: A raw material feed hopper according to the present embodiment may include a hollow tube having a raw material accommodating space formed therein, a supporter supporting the hollow tube, a cone accommodated in the raw material accommodating space so as to be able to lift up and down, a rod connected to the cone, a connector connected to an upper portion of the rod, a lifting rod connected to the connector, and an elevator installed on the supporter for lifting up and down the lifting rod.
    Type: Application
    Filed: May 28, 2021
    Publication date: July 21, 2022
    Inventors: Sang Heon LEE, Chang Youn LEE, Cheol Hwan KIM
  • Single-crystal growth apparatus
    Patent number: 9657411
    Abstract: Disclosed is a single-crystal growth apparatus including a chamber, a crucible provided in the chamber and configured to accommodate a melt that is a raw material for single-crystal growth, a heater disposed between the crucible and a side wall of the chamber and heating the crucible, and a crucible screen disposed on an upper end of the crucible, and the crucible screen has a bending member reflecting a radiant heat generated from the melt in the crucible to inside wall of the crucible.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: May 23, 2017
    Assignee: LG Siltron Incorporated
    Inventors: Chang Youn Lee, Do Won Song, Jun Hyuk Choi, Jin Ho Son, Cheol Hwan Kim
  • SINGLE-CRYSTAL GROWTH APPARATUS
    Publication number: 20150354092
    Abstract: Disclosed is a single-crystal growth apparatus including a chamber, a crucible provided in the chamber and configured to accommodate a melt that is a raw material for single-crystal growth, a heater disposed between the crucible and a side wall of the chamber and heating the crucible, and a crucible screen disposed on an upper end of the crucible, and the crucible screen has a bending member reflecting a radiant heat generated from the melt in the crucible to inside wall of the crucible.
    Type: Application
    Filed: December 19, 2013
    Publication date: December 10, 2015
    Inventors: Chang Youn LEE, Do Won SONG, Jun Hyuk CHOI, Jin Ho SON, Cheol Hwan KIM
  • Resistance heated sapphire single crystal ingot grower, method of manufacturing resistance heated sapphire single crystal ingot, sapphire single crystal ingot, and sapphire wafer
    Patent number: 8597756
    Abstract: Provided are a resistance heated sapphire single crystal ingot grower, a method of manufacturing a resistance heated sapphire single crystal ingot, a sapphire single crystal ingot, and a sapphire wafer. The resistance heated sapphire single crystal ingot grower comprises according to an embodiment includes a chamber, a crucible included in the chamber and containing an alumina melt, and a resistance heating heater included inside the chamber and heating the crucible.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: December 3, 2013
    Assignee: LG Siltron Inc.
    Inventors: Do Won Song, Young Hee Mun, Sang Hoon Lee, Seong Oh Jeong, Chang Youn Lee
  • RESISTANCE HEATED SAPPHIRE SINGLE CRYSTAL INGOT GROWER, METHOD OF MANUFACTURING RESISTANCE HEATED SAPPHIRE SNGLE CRYSTAL INGOT, SAPPHIRE SNGLE CRYSTAL INGOT, AND SAPPHIRE WAFER
    Publication number: 20120282426
    Abstract: Provided are a resistance heated sapphire single crystal ingot grower, a method of manufacturing a resistance heated sapphire single crystal ingot, a sapphire single crystal ingot, and a sapphire wafer. The resistance heated sapphire single crystal ingot grower comprises according to an embodiment includes a chamber, a crucible included in the chamber and containing an alumina melt, and a resistance heating heater included inside the chamber and heating the crucible.
    Type: Application
    Filed: January 19, 2012
    Publication date: November 8, 2012
    Inventors: Do Won SONG, Young Hee Mun, Sang Hoon Lee, Seong Oh Jeong, Chang Youn Lee