Patents by Inventor Cheol-jun Yoo

Cheol-jun Yoo 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: 20240170752
    Abstract: A method is provided for selectively recovering and concentrating valuable metal ions using diafiltration and nanofiltration from a solution containing the valuable metal ions and impurity metal ions. It is possible to selectively recover and concentrate valuable metal ions from a solution containing the valuable metal ions and impurity metal ions by the method.
    Type: Application
    Filed: November 21, 2023
    Publication date: May 23, 2024
    Inventors: Jong Suk LEE, Cheol Hun YOO, Jeong Han SHIN, Ho Jun LEE
  • Patent number: 10411175
    Abstract: There is provided a light emitting element package including: a light emitting laminate having a structure in which semiconductor layers are laminated and having a first main surface and a second main surface opposing the first main surface; a terminal unit disposed on an electrode disposed on the second main surface; a molded unit disposed on the second main surface of the light emitting laminate and allowing a portion of the terminal unit to be exposed; and a wavelength conversion unit disposed on the first main surface of the light emitting laminate.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: September 10, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Il Woo Park, Cheol Jun Yoo
  • Patent number: 9892981
    Abstract: A method and apparatus for depositing a phosphor using transfer molding. The method includes: forming a plurality of light-emitting devices on a wafer and rearranging the light-emitting devices on a carrier substrate according to luminance characteristics of the plurality of light-emitting devices by examining the luminance characteristics of the plurality of light-emitting devices; depositing the phosphor on the rearranged light-emitting devices using transfer molding; and separating the light-emitting devices on the carrier substrate.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 13, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Cheol-Jun Yoo, Seong-Jae Hong
  • Patent number: 9722146
    Abstract: There are provided a phosphor film, a method of manufacturing the same, and a method of coating an LED chip with a phosphor layer. The phosphor film includes: a base film; a phosphor layer formed on the base film and obtained by mixing phosphor particles in a partially cured resin material; and a cover film formed on the phosphor layer to protect the phosphor layer.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: August 1, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Hoon Kwak, Il Woo Park, Kyu Jin Lee, Cheol Jun Yoo, Seong Jae Hong
  • Publication number: 20170110636
    Abstract: There is provided a light emitting element package including: a light emitting laminate having a structure in which semiconductor layers are laminated and having a first main surface and a second main surface opposing the first main surface; a terminal unit disposed on an electrode disposed on the second main surface; a molded unit disposed on the second main surface of the light emitting laminate and allowing a portion of the terminal unit to be exposed; and a wavelength conversion unit disposed on the first main surface of the light emitting laminate.
    Type: Application
    Filed: December 27, 2016
    Publication date: April 20, 2017
    Inventors: IL WOO PARK, CHEOL JUN YOO
  • Patent number: 9272300
    Abstract: Methods and apparatus for manufacturing a semiconductor light-emitting device that emits white light by forming a phosphor layer on an emission surface of the semiconductor light-emitting device at a wafer-level. The method includes: forming a plurality of light-emitting devices on a wafer; thinning the wafer, on which the plurality of light-emitting devices are formed; disposing the thinned wafer on a carrier film; and forming a phosphor layer on an emission surface of the plurality of light-emitting devices on the wafer.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: March 1, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Cheol-Jun Yoo, Seong-Jae Hong, Tsuyoshi Tsutsui, Shin-Kun Kim
  • Patent number: 9153759
    Abstract: A manufacturing method of a light emitting diode (LED) and a manufacturing method of an LED module are provided. The manufacturing method of the LED may include manufacturing a plurality of LED chips, manufacturing a phosphor pre-form including a plurality of mounting areas for mounting the plurality of LED chips, applying an adhesive inside the phosphor pre-form, mounting each of the plurality of LED chips in each of the plurality of mounting areas, and cutting the phosphor pre-form to which the plurality of LED chips are mounted, into units including individual LED chips.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hak Hwan Kim, Min Jung Kim, Kyung Mi Moon, Jong Sup Song, Jae Sung You, Ill Heoung Choi, Cheol Jun Yoo
  • Patent number: 9028082
    Abstract: A light source module including: a cover unit having a pipe structure with one open end or two open ends; a cap unit coupled to the one open end or two open ends of the cover unit; a light source unit including a light emitting device, the light source unit mounted on the cap unit and covered by the cover unit; and a wavelength conversion unit disposed in an internal space of the cover unit and coupled to the light source unit while covering the light emitting device, the wavelength conversion unit converting a wavelength of light emitted from the light emitting device to allow the wavelength-converted light to be emitted through the cover unit.
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: May 12, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol Jun Yoo, Young Hee Song
  • Patent number: 8987022
    Abstract: Light-emitting device packages which may be manufactured using post-molding and with improved heat emission performance and optical quality, and methods of manufacturing the light-emitting device packages. The light-emitting device package includes: a heat dissipation pad; a light-emitting device formed on the heat dissipation pad; a pair of lead frames disposed to be spaced apart from each other at both sides of the light-emitting device and the heat dissipation pad; a molding member surrounding the side of the light-emitting device except for an emission surface of the light-emitting device; and bonding wires for electrically connecting the lead frames to the light-emitting device.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol-jun Yoo, Young-hee Song, Seong-deok Hwang, Sang-hyun Lee
  • Patent number: 8952404
    Abstract: A light-emitting device package having improved connection reliability of a bonding wire, heat dissipation properties, and light quality due to post-molding and a method of manufacturing the light-emitting device package. The light-emitting device package includes, for example, a wiring substrate having an opening; a light-emitting device that is disposed on the wiring substrate and covers the opening; a bonding wire electrically connecting a bottom surface of the wiring substrate to a bottom surface of the light-emitting device via the opening; a molding member that surrounds a side surface of the light-emitting device and not a top surface of the light-emitting device, which is an emission surface, is formed on a portion of a top surface of the wiring substrate, and is formed in the opening of the wiring substrate to cover the bonding wire; and a solder resist and a bump formed on the bottom surface of the wiring substrate.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: February 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol-jun Yoo, Young-hee Song
  • Patent number: 8933474
    Abstract: A light emitting diode (LED) package and a manufacturing method thereof are provided. The LED package includes a substrate including a circuit layer, an LED mounted on the substrate, and a plurality of protruded reflection units disposed in a region excluding an LED mounting region on the substrate and configured to reflect light generated from the LED.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: January 13, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol Jun Yoo, Young Hee Song
  • Patent number: 8894240
    Abstract: An illumination device includes a main body unit, a light source module and a cover unit. The light source module is disposed in an upper space of the main body unit to be separated therefrom and includes a substrate and at least one light emitting device respectively disposed on both surfaces of the substrate. The cover unit is disposed on the main body unit to cover the light source module and allowing light emitted from the light source module to be emitted from a surface of the cover unit in a radial manner.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: November 25, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol Jun Yoo, Young Hee Song
  • Publication number: 20140338593
    Abstract: Methods and apparatus for manufacturing a semiconductor light-emitting device that emits white light by forming a phosphor layer on an emission surface of the semiconductor light-emitting device at a wafer-level. The method includes: forming a plurality of light-emitting devices on a wafer; thinning the wafer, on which the plurality of light-emitting devices are formed; disposing the thinned wafer on a carrier film; and forming a phosphor layer on an emission surface of the plurality of light-emitting devices on the wafer.
    Type: Application
    Filed: August 4, 2014
    Publication date: November 20, 2014
    Inventors: Cheol-Jun YOO, Seong-Jae HONG, Tsuyoshi TSUTSUI, Shin-Kun KIM
  • Patent number: 8860069
    Abstract: A light-emitting device package. The light-emitting device package includes a lead frame comprising a plurality of separate leads; a molding member that fixes the plurality of leads and comprises an opening portion that exposes the lead frame; and a light-emitting device chip that is attached on the lead frame in the opening portion and emits light through an upper surface portion of the light-emitting device chip, wherein a height of the molding member is lower than a height of the light-emitting device chip with respect to the lead frame.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol-jun Yoo, Young-hee Song
  • Publication number: 20140299906
    Abstract: A manufacturing method of a light emitting diode (LED) and a manufacturing method of an LED module are provided. The manufacturing method of the LED may include manufacturing a plurality of LED chips, manufacturing a phosphor pre-form including a plurality of mounting areas for mounting the plurality of LED chips, applying an adhesive inside the phosphor pre-form, mounting each of the plurality of LED chips in each of the plurality of mounting areas, and cutting the phosphor pre-form to which the plurality of LED chips are mounted, into units including individual LED chips.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Inventors: Hak Hwan KIM, Min Jung KIM, Kyung Mi MOON, Jong Sup SONG, Jae Sung YOU, Ill Heoung CHOI, Cheol Jun YOO
  • Publication number: 20140291705
    Abstract: There are provided a phosphor film, a method of manufacturing the same, and a method of coating an LED chip with a phosphor layer. The phosphor film includes: a base film; a phosphor layer formed on the base film and obtained by mixing phosphor particles in a partially cured resin material; and a cover film formed on the phosphor layer to protect the phosphor layer.
    Type: Application
    Filed: June 16, 2014
    Publication date: October 2, 2014
    Inventors: CHANG HOON KWAK, IL Woo Park, Kyu Jin Lee, Cheol Jun Yoo, Seong Jae Hong
  • Patent number: 8796050
    Abstract: Methods and apparatus for manufacturing a semiconductor light-emitting device that emits white light by forming a phosphor layer on an emission surface of the semiconductor light-emitting device at a wafer-level. The method includes: forming a plurality of light-emitting devices on a wafer; thinning the wafer, on which the plurality of light-emitting devices are formed; disposing the thinned wafer on a carrier film; and forming a phosphor layer on an emission surface of the plurality of light-emitting devices on the wafer.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: August 5, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol-jun Yoo, Seong-jae Hong, Tsuyoshi Tsutsui, Shin-kun Kim
  • Patent number: 8795817
    Abstract: There are provided a phosphor film, a method of manufacturing the same, and a method of coating an LED chip with a phosphor layer. The phosphor film includes: a base film; a phosphor layer formed on the base film and obtained by mixing phosphor particles in a partially cured resin material; and a cover film formed on the phosphor layer to protect the phosphor layer.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: August 5, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang Hoon Kwak, II Woo Park, Kyu Jin Lee, Cheol Jun Yoo, Seong Jae Hong
  • Patent number: 8785953
    Abstract: A manufacturing method of a light emitting diode (LED) and a manufacturing method of an LED module are provided. The manufacturing method of the LED may include manufacturing a plurality of LED chips, manufacturing a phosphor pre-form including a plurality of mounting areas for mounting the plurality of LED chips, applying an adhesive inside the phosphor pre-form, mounting each of the plurality of LED chips in each of the plurality of mounting areas, and cutting the phosphor pre-form to which the plurality of LED chips are mounted, into units including individual LED chips.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: July 22, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hak Hwan Kim, Min Jung Kim, Kyung Mi Moon, Jong Sup Song, Jae Sung You, Ill Heoung Choi, Cheol Jun Yoo
  • Patent number: 8741675
    Abstract: Provided are a mask for an application of paste and a method of manufacturing a semiconductor light emitting device by using the same. The method includes preparing a light emitting structure including first and second conductive semiconductor layers and an active layer disposed therebetween, which has at least one electrode formed on a surface of the light emitting structure; disposing a mask having an open part exposing a portion of the surface of the light emitting structure therethrough and a recess part corresponding the electrode in a region thereof on a surface of the light emitting structure; and applying wavelength conversion material-containing paste to the surface of the light emitting structure through the open part.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: June 3, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol Jun Yoo, Seong Jae Hong