Patents by Inventor Younggu Do

Younggu Do 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: 11004991
    Abstract: Provided is a method of manufacturing a photovoltaic solar cell, including: forming a first conductivity type region that contains a first conductivity dopant, on one surface of a semiconductor substrate and an opposite surface that is opposite to the one surface; removing the first conductivity type region formed on the opposite surface of the semiconductor substrate by performing dry etching; and forming a second conductivity type region that contains a second conductivity type dopant, on the opposite surface of the semiconductor substrate.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: May 11, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Younggu Do, Sungjin Kim, Hyungwook Choi
  • Publication number: 20180248060
    Abstract: Provided is a method of manufacturing a photovoltaic solar cell, including: forming a first conductivity type region that contains a first conductivity dopant, on one surface of a semiconductor substrate and an opposite surface that is opposite to the one surface; removing the first conductivity type region formed on the opposite surface of the semiconductor substrate by performing dry etching; and forming a second conductivity type region that contains a second conductivity type dopant, on the opposite surface of the semiconductor substrate.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 30, 2018
    Applicant: LG ELECTRONICS INC.
    Inventors: Younggu DO, Sungjin KIM, Hyungwook CHOI
  • Patent number: 8981208
    Abstract: A solar cell and a method for manufacturing the same are discussed. The solar cell includes a substrate of a first conductive type, an emitter layer of a second conductive type opposite the first conductive type, a plurality of first electrodes connected to the emitter layer, at least one first current collector connected to the plurality of first electrodes, and a second electrode connected to the substrate. The emitter layer forms a p-n junction along with the substrate. Each of the plurality of first electrodes has a multi-layered structure, and the at least one first current collector has a single-layered structure.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: March 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Sungjin Kim, Gyeayoung Kwag, Younggu Do, Mann Yi, Seongeun Lee, Youngsung Yang, Taeyoung Kwon, Haejong Cho, Minho Choi, Juhwa Cheong
  • Patent number: 8232128
    Abstract: Methods of texturing and manufacturing a solar cell are provided. The method of texturing the solar includes texturing a surface of a substrate of the solar cell using a wet etchant, and the wet etchant includes a surfactant.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: July 31, 2012
    Assignee: LG Electronics Inc.
    Inventors: Juhwa Cheong, Sungjin Kim, Jiweon Jeong, Younggu Do
  • Publication number: 20120167978
    Abstract: The present embodiment relates to a solar cell and a method for manufacturing the same. A solar cell according to an embodiment includes a substrate comprising silicon semiconductor material; an emitter region formed on a rear surface of the substrate; a back surface field region formed on the rear surface of the substrate, wherein the back surface field region comprising a first back surface field region and a second the back surface field region; a first electrode electrically connected to the emitter region; and a second electrode electrically that is connected to the first back surface field region, wherein the second electrode that is not electrically connected to the second back surface field region.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 5, 2012
    Applicant: LG ELECTRONICS INC.
    Inventors: Myungjun SHIN, Younggu DO, Sungjin KIM, Juhwa CHEONG, Youngsung YANG, Haejong CHO, Mann YI, Gyeayoung KWAG, Seongeun LEE
  • Publication number: 20110308601
    Abstract: A solar cell and a method for manufacturing the same are discussed. The solar cell includes a substrate of a first conductive type, an emitter layer of a second conductive type opposite the first conductive type, a plurality of first electrodes connected to the emitter layer, at least one first current collector connected to the plurality of first electrodes, and a second electrode connected to the substrate. The emitter layer forms a p-n junction along with the substrate. Each of the plurality of first electrodes has a multi-layered structure, and the at least one first current collector has a single-layered structure.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 22, 2011
    Inventors: Sungjin KIM, Gyeayoung Kwag, Younggu Do, Mann Yi, Seongeun Lee, Youngsung Yang, Taeyoung Kwon, Haejong Cho, Minho Choi, Juhwa Cheong
  • Patent number: 7927498
    Abstract: A solar cell and a method of texturing a solar cell are disclosed. The method includes coating an ink containing metal particles on a surface of a substrate, drying the ink to attach the metal particles to the surface of the substrate, and differentially etching the surface of the substrate using the metal particles as a catalyst to form an uneven portion.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: April 19, 2011
    Assignee: LG Electronics Inc.
    Inventors: Younggu Do, Junyong Ahn, Gyeayoung Kwag
  • Publication number: 20110027933
    Abstract: Methods of texturing and manufacturing a solar cell are provided. The method of texturing the solar includes texturing a surface of a substrate of the solar cell using a wet etchant, and the wet etchant includes a surfactant.
    Type: Application
    Filed: October 15, 2010
    Publication date: February 3, 2011
    Inventors: Juhwa Cheong, Sungjin Kim, Jiweon Jeong, Younggu Do
  • Patent number: 7858426
    Abstract: Methods of texturing and manufacturing a solar cell are provided. The method of texturing the solar includes texturing a surface of a substrate of the solar cell using a wet etchant, and the wet etchant includes a surfactant.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: December 28, 2010
    Assignee: LG Electronics Inc.
    Inventors: Juhwa Cheong, Sungjin Kim, Jiweon Jeong, Younggu Do
  • Publication number: 20100248408
    Abstract: Methods of texturing and manufacturing a solar cell are provided. The method of texturing the solar includes texturing a surface of a substrate of the solar cell using a wet etchant, and the wet etchant includes a surfactant.
    Type: Application
    Filed: March 26, 2009
    Publication date: September 30, 2010
    Inventors: Juhwa Cheong, Sungjin Kim, Jiweon Jeong, Younggu Do
  • Publication number: 20090199898
    Abstract: A solar cell and a method of texturing a solar cell are disclosed. The method includes coating an ink containing metal particles on a surface of a substrate, drying the ink to attach the metal particles to the surface of the substrate, and differentially etching the surface of the substrate using the metal particles as a catalyst to form an uneven portion.
    Type: Application
    Filed: February 13, 2009
    Publication date: August 13, 2009
    Inventors: Younggu Do, Junyong Ahn, Gyeayoung Kwag
  • Publication number: 20090183776
    Abstract: A solar cell, a method of manufacturing the solar cell, and a method of texturing the solar cell are provided. The method of texturing the solar cell includes depositing metal particles on a solar cell substrate, and etching the solar cell substrate and forming a plurality of hemisphere-shaped grooves on the solar cell substrate to texture a surface of the solar cell substrate.
    Type: Application
    Filed: January 2, 2009
    Publication date: July 23, 2009
    Applicant: LG ELECTRONICS INC.
    Inventors: Gyeayoung Kwag, Younggu Do