Patents by Inventor Chang Hoon Kwak

Chang Hoon Kwak 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: 10361351
    Abstract: A semiconductor light-emitting diode (LED) package is provided and includes a semiconductor LED chip having a surface on which a first electrode and a second electrode are formed; a first solder bump formed on the first electrode and a second solder bump formed on the second electrode, the first solder bump and the second solder bump protruding from the surface of the semiconductor LED chip; and a resin layer having a bottom portion that surrounds a first side surface of the first solder bump and a second side surface of the second solder bump and covers the surface of the semiconductor LED chip.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: July 23, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Hoon Kwak, Sung Jin Ahn, Hak Hwan Kim, Jin Hwan Kim, Jin Kweon Chung, Min Jung Kim
  • Publication number: 20190067539
    Abstract: A semiconductor light-emitting diode (LED) package is provided and includes a semiconductor LED chip having a surface on which a first electrode and a second electrode are formed; a first solder bump formed on the first electrode and a second solder bump formed on the second electrode, the first solder bump and the second solder bump protruding from the surface of the semiconductor LED chip; and a resin layer having a bottom portion that surrounds a first side surface of the first solder bump and a second side surface of the second solder bump and covers the surface of the semiconductor LED chip.
    Type: Application
    Filed: March 15, 2018
    Publication date: February 28, 2019
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: CHANG HOON KWAK, SUNG JIN AHN, HAK HWAN KIM, JIN HWAN KIM, JIN KWEON CHUNG, MIN JUNG KIM
  • 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
  • Patent number: 9142737
    Abstract: A light emitting device package includes: first and second electrodes, at least a portion of a lower surface thereof being exposed; a light emitting device disposed on an upper surface of at least one of the first and second electrodes; a reflection wall disposed on the upper surface of the first and second electrodes and surrounding the light emitting device to form a mounting part therein; and a fluorescent film disposed on the reflection wall to cover an upper portion of the mounting part. The mounting part is filled with air.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: September 22, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Na-Na Park, Il Woo Park, Chang Hoon Kwak
  • Publication number: 20150236224
    Abstract: Provided are a light emitting device package and a method of fabricating the same. The package includes a package body including a lead frame, a light emitting device mounted on the package body, a bonding wire configured to electrically connect an electrode formed on a top surface of the light emitting device with the lead frame, a phosphor sheet attached on the light emitting device, and a phosphor molding portion to cover the light emitting device and the phosphor sheet.
    Type: Application
    Filed: January 28, 2015
    Publication date: August 20, 2015
    Inventors: Chang-Hoon KWAK, Hak-Hwan KIM, Byung-Kwon YOON, Hyo-Jin LEE, Han-Na HEO
  • Patent number: 9087968
    Abstract: There is provided a white light emitting device including: a blue LED emitting blue light; a red phosphor excited by the blue light, emitting red light, and including a nitrogen (N)-containing compound; a yellow phosphor excited by the blue light and emitting yellow light; a first green phosphor excited by the blue light, emitting first green light having a first full width half maximum, and including a nitrogen (N)-containing compound; and a second green phosphor excited by the blue light and emitting second green light having a second full width half maximum larger than the first full width half maximum of the first green phosphor.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 21, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyo Jin Lee, Jeong Hee Kim, Il Woo Park, Chang Hoon Kwak, Kyung Seo
  • Publication number: 20150171290
    Abstract: There is provided a light emitting device package using a quantum dot, an illumination apparatus and a display apparatus. The light emitting device package includes a light emitting device; a sealing part disposed in a path of light emitted from the light emitting device and having a lens shape; and a wavelength conversion part sealed within the sealing part and including a quantum dot. The light emitting device package uses the quantum dot as the wavelength conversion part to thereby achieve superior color reproducibility and light emission efficiency, and facilitates the control of color coordinates by adjusting the particle size and concentration of the quantum dot.
    Type: Application
    Filed: February 24, 2015
    Publication date: June 18, 2015
    Inventors: Hyo Jin LEE, Il Woo PARK, Chang Hoon KWAK
  • Publication number: 20150069454
    Abstract: A light emitting device package includes: first and second electrodes, at least a portion of a lower surface thereof being exposed; a light emitting device disposed on an upper surface of at least one of the first and second electrodes; a reflection wall disposed on the upper surface of the first and second electrodes and surrounding the light emitting device to form a mounting part therein; and a fluorescent film disposed on the reflection wall to cover an upper portion of the mounting part. The mounting part is filled with air.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 12, 2015
    Inventors: Na-Na PARK, Il Woo PARK, Chang Hoon KWAK
  • Patent number: 8890188
    Abstract: A light emitting device package includes: first and second electrodes, at least a portion of a lower surface thereof being exposed; a light emitting device disposed on an upper surface of at least one of the first and second electrodes; a reflection wall disposed on the upper surface of the first and second electrodes and surrounding the light emitting device to form a mounting part therein; and a fluorescent film disposed on the reflection wall to cover an upper portion of the mounting part. The mounting part is filled with air.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: November 18, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Na Na Park, Il Woo Park, Chang Hoon Kwak
  • 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: 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
  • Publication number: 20140141283
    Abstract: A method of manufacturing a phosphor resin film and a phosphor resin film manufactured thereby are provided. The method of manufacturing a phosphor resin film includes preparing a polymer slurry by mixing a polymer resin and a latent curing agent in a solvent, spreading the polymer slurry such that it has a film shape, drying the spread polymer slurry to form a semi-hardened resin film, and providing phosphor powder to the semi-hardened resin film. A phosphor resin film includes semi-hardened resin film including a polymer resin and a latent curing agent and phosphors uniformly formed on one surface of the semi-hardened resin film.
    Type: Application
    Filed: August 12, 2011
    Publication date: May 22, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung Jae Lee, Na Na Park, Gyeong Seon Seon Park, Bo Kyoung Kim, Jong Rak Sohn, Chang Hoon Kwak
  • Patent number: 8507299
    Abstract: The present invention relates to a light emitting diode package and a manufacturing method thereof. The light emitting diode package includes a substrate, an LED chip mounted on an upper part of a substrate, a molding material coated at the upper part of the substrate including an external surface of the LED chip, and an encapsulant coated at a lower part of the substrate and can improve luminous efficiency, minimize a package failure, and reduce a manufacture cost by facilitating the manufacturing process.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: August 13, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong Ah Joo, Chang Hoon Kwak, Na Na Park, Il Woo Park
  • Publication number: 20130149508
    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: August 24, 2011
    Publication date: June 13, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Chang Hoon Kwak, Il Woo Park, Kyu Jin Lee, Cheol Jun Yoo, Seong Jae Hong
  • Patent number: 8445927
    Abstract: The present invention relates to a light emitting diode package and a manufacturing method thereof. The light emitting diode package includes a substrate, an LED chip mounted on an upper part of a substrate, a molding material coated at the upper part of the substrate including an external surface of the LED chip, and an encapsulant coated at a lower part of the substrate and can improve luminous efficiency, minimize a package failure, and reduce a manufacture cost by facilitating the manufacturing process.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: May 21, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong Ah Joo, Chang Hoon Kwak, Na Na Park, Il Woo Park
  • Patent number: 8378568
    Abstract: Provided is a white light emitting diode (LED) including a blue LED chip; and yellow, green, and red light emitting phosphors that are coated on the blue LED chip at a predetermined mixing ratio and converts light, emitted from the blue LED chip, into white light.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: February 19, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong Rak Sohn, Chul Soo Yoon, Chang Hoon Kwak, Il Woo Park
  • Publication number: 20120274240
    Abstract: There is provided a white light emitting device including: a blue LED emitting blue light; a red phosphor excited by the blue light, emitting red light, and including a nitrogen (N)-containing compound; a yellow phosphor excited by the blue light and emitting yellow light; a first green phosphor excited by the blue light, emitting first green light having a first full width half maximum, and including a nitrogen (N)-containing compound; and a second green phosphor excited by the blue light and emitting second green light having a second full width half maximum larger than the first full width half maximum of the first green phosphor.
    Type: Application
    Filed: April 27, 2012
    Publication date: November 1, 2012
    Inventors: Hyo Jin LEE, Jeong Hee KIM, Il Woo PARK, Chang Hoon KWAK, Kyung SEO
  • Patent number: 8294168
    Abstract: A light source module using quantum dots, a backlight unit employing the light source module, a display apparatus, and an illumination apparatus. The light source module includes a light emitting device package including a plurality of light emitting device chips, and a quantum dot sealing package disposed on the light emitting device package in a light emitting direction, and converts wavelengths of light emitted from the light emitting device chips to generate wavelength-converted light.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: October 23, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Il-woo Park, Chang-hoon Kwak, Hyo-jin Lee
  • Publication number: 20120112229
    Abstract: A light emitting device package includes: first and second electrodes, at least a portion of a lower surface thereof being exposed; a light emitting device disposed on an upper surface of at least one of the first and second electrodes; a reflection wall disposed on the upper surface of the first and second electrodes and surrounding the light emitting device to form a mounting part therein; and a fluorescent film disposed on the reflection wall to cover an upper portion of the mounting part. The mounting part is filled with air.
    Type: Application
    Filed: November 7, 2011
    Publication date: May 10, 2012
    Inventors: Na Na PARK, Il Woo Park, Chang Hoon Kwak
  • Patent number: 8098005
    Abstract: A white light emitting device including: a blue light emitting diode (LED); a green silicate phosphor formed on the blue LED; and a red sulfide phosphor with a surface coated with a silicone oxide layer, the red sulfide phosphor formed on the blue LED.
    Type: Grant
    Filed: January 17, 2008
    Date of Patent: January 17, 2012
    Assignee: Samsung LED Co., Ltd.
    Inventors: Chang Hoon Kwak, Young Mok Lee, Il Woo Park, Jong Rak Sohn, Chul Soo Yoon