Patents by Inventor Jae Hwi Cho

Jae Hwi Cho 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: 10672923
    Abstract: A front electrode for solar cells and a solar cell, the front electrode including a stepped structure at an outermost surface thereof, wherein the stepped structure is composed of n stages, in which n is an integer of 3 or greater, and an nth stage has a smaller cross-sectional area than an (n?1)th stage such that the (n?1)th stage is partially exposed, and the stepped structure occupies about 5% to about 100% of a total surface area of the outermost surface.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: June 2, 2020
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Dong Suk Kim, Hee In Nam, Sang Hee Park, Seok Hyun Jung, Jae Hwi Cho
  • Patent number: 10439079
    Abstract: A method of manufacturing a finger electrode for a solar cell including printing a conductive paste on one surface of a substrate using a print mask having an aperture ratio of about 65% or more, and baking the printed conductive paste. The conductive paste includes a conductive powder, a glass frit, and an organic vehicle. The organic vehicle includes a solvent having a vapor pressure of about 0.1 Pa to about 500 Pa at room temperature and a flash point of about 90° C. to about 150° C.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: October 8, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sang Hee Park, Sang Jin Kim, Jae Hwi Cho
  • Publication number: 20190181277
    Abstract: A solar cell includes a silicon substrate and an electrode formed on the silicon substrate. The silicon substrate has at least 5 raised portions having a cross-sectional height (h) of 50 nm or more per 5 ?m length. The electrode is formed from a composition for solar cell electrodes including a conductive powder, an organic vehicle, and a glass frit having a glass transition temperature (Tg) of about 150° C. to about 450° C.
    Type: Application
    Filed: June 11, 2018
    Publication date: June 13, 2019
    Inventors: Sang Hee PARK, Sang Jin KIM, Jae Hwi CHO, Hyun Jin HA
  • Patent number: 10315950
    Abstract: A composition for solar cell electrodes including a conductive powder, a glass frit, and an organic vehicle. The glass frit contains tellurium (Te), sodium (Na), zinc (Zn), and at least one of lead (Pb) and bismuth (Bi). A molar ratio of the sum of lead and bismuth to zinc ranges from about 1 to about 20. A molar ratio of tellurium to sodium ranges from about 1 to about 15.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: June 11, 2019
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jae Hwi Cho, Dong Suk Kim, Seok Hyun Jung
  • Publication number: 20180158969
    Abstract: A method of manufacturing a finger electrode for a solar cell including printing a conductive paste on one surface of a substrate using a print mask having an aperture ratio of about 65% or more, and baking the printed conductive paste. The conductive paste includes a conductive powder, a glass frit, and an organic vehicle. The organic vehicle includes a solvent having a vapor pressure of about 0.1 Pa to about 500 Pa at room temperature and a flash point of about 90° C. to about 150° C.
    Type: Application
    Filed: June 21, 2017
    Publication date: June 7, 2018
    Inventors: Sang Hee PARK, Sang Jin KIM, Jae Hwi CHO
  • Publication number: 20180122968
    Abstract: A finger electrode for a solar cell formed using a conductive paste comprising a conductive powder, a glass frit, and an organic vehicle. A linewidth A? of the finger electrode at a point 0.5H satisfies the following Equation 1: 0.5A?A??0.75A where H is the height of the finger electrode and A is the linewidth of a base of the finger electrode.
    Type: Application
    Filed: June 26, 2017
    Publication date: May 3, 2018
    Inventors: Dae Sub SONG, Jae Hwi CHO
  • Publication number: 20180047859
    Abstract: A front electrode for solar cells and a solar cell, the front electrode including a stepped structure at an outermost surface thereof, wherein the stepped structure is composed of n stages, in which n is an integer of 3 or greater, and an nth stage has a smaller cross-sectional area than an (n?1)th stage such that the (n?1)th stage is partially exposed, and the stepped structure occupies about 5% to about 100% of a total surface area of the outermost surface.
    Type: Application
    Filed: July 27, 2017
    Publication date: February 15, 2018
    Inventors: Dong Suk KIM, Hee In NAM, Sang Hee PARK, Seok Hyun JUNG, Jae Hwi CHO
  • Publication number: 20170362117
    Abstract: A composition for solar cell electrodes including a conductive powder, a glass frit, and an organic vehicle. The glass frit contains tellurium (Te), sodium (Na), zinc (Zn), and at least one of lead (Pb) and bismuth (Bi). A molar ratio of the sum of lead and bismuth to zinc ranges from about 1 to about 20. A molar ratio of tellurium to sodium ranges from about 1 to about 15.
    Type: Application
    Filed: June 1, 2017
    Publication date: December 21, 2017
    Inventors: Jae Hwi CHO, Dong Suk KIM, Seok Hyun JUNG
  • Patent number: 8343384
    Abstract: Disclosed herein is a composition for electrodes that enables a firing process in air at a temperature of 600° C. or less and does not cause an increase in absolute resistance and a substantial variation of the resistance even when the composition is repeatedly subjected to the firing process. The composition for electrodes comprises: about 5 to about 95% by weight of aluminum powder, the aluminum powder having a particle size distribution of about 2.0 or less as expressed by the following Equation (1) and having D50 in the range of about 0.1 ?m?D50?about 20 ?m; about 3 to about 60% by weight of an organic binder; and the balance of a solvent: Particle size distribution=(D90?D10)/D50??(1) wherein D10, D50, and D90 represent particle diameters at 10%, 50% and 90% points on an accumulation curve of a particle size distribution when the total weight is 100%. An electrode and a PDP fabricated using the composition are also disclosed.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: January 1, 2013
    Assignee: Cheil Industries Inc.
    Inventors: Jae Hwi Cho, Kuninori Okamoto, Yong Hyun Kim, Hyun Don Kim
  • Publication number: 20110273086
    Abstract: Disclosed herein is a composition for electrodes that enables a firing process in air at a temperature of 600° C. or less and does not cause an increase in absolute resistance and a substantial variation of the resistance even when the composition is repeatedly subjected to the firing process. The composition for electrodes comprises: about 5 to about 95% by weight of aluminum powder, the aluminum powder having a particle size distribution of about 2.0 or less as expressed by the following Equation (1) and having D50 in the range of about 0.1 ?m?D50?about 20 ?m; about 3 to about 60% by weight of an organic binder; and the balance of a solvent: Particle size distribution=(D90?D10)/D50??(1) wherein D10, D50, and D90 represent particle diameters at 10%, 50% and 90% points on an accumulation curve of a particle size distribution when the total weight is 100%. An electrode and a PDP fabricated using the composition are also disclosed.
    Type: Application
    Filed: July 20, 2011
    Publication date: November 10, 2011
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jae Hwi CHO, Kuninori OKAMOTO, Yong Hyun KIM, Hyun Don KIM
  • Patent number: 8043532
    Abstract: Disclosed herein is a composition for electrodes that enables a firing process in air at a temperature of 600° C. or less and does not cause an increase in absolute resistance and a substantial variation of the resistance even when the composition is repeatedly subjected to the firing process. The composition for electrodes comprises: about 5 to about 95% by weight of aluminum powder, the aluminum powder having a particle size distribution of about 2.0 or less as expressed by the following Equation (1) and having D50 in the range of about 0.1 ?m?D50?about 20 ?m; about 3 to about 60% by weight of an organic binder; and the balance of a solvent: Particle size distribution=(D90?D10)/D50??(1) wherein D10, D50, and D90 represent particle diameters at 10%, 50% and 90% points on an accumulation curve of a particle size distribution when the total weight is 100%. An electrode and a PDP fabricated using the composition are also disclosed.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: October 25, 2011
    Assignee: Cheil Industries Inc.
    Inventors: Jae Hwi Cho, Kuninori Okamoto, Yong Hyun Kim, Hyun Don Kim
  • Patent number: 8003018
    Abstract: A composition for fabricating an electrode includes an organic binder and a conductive filler. About 3 to about 60 wt. % of the composition is the organic binder, about 5 to about 95 wt. % of the composition is the conductive filler, the conductive filler includes predominantly aluminum, the conductive filler has a flake shape, and the conductive filler has an average thickness of about 0.05 ?m to about 0.75 ?m.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: August 23, 2011
    Assignee: Cheil Industries, Inc.
    Inventors: Jae Hwi Cho, Kuninori Okamoto, Yong Hyun Kim, Hyun Don Kim
  • Publication number: 20110140054
    Abstract: An example embodiment is directed to a composition for preparation of an electrode, including: a conductive material, the conductive material including Ni, Ag, and ITO, an organic binder, a glass fit, and a black pigment.
    Type: Application
    Filed: December 6, 2010
    Publication date: June 16, 2011
    Inventors: Jae Joon SHIM, Jae Hwi Cho, Yong Hyun Kim, Hyun Don Kim
  • Publication number: 20090134767
    Abstract: Disclosed herein is a composition for electrodes that enables a firing process in air at a temperature of 600° C. or less and does not cause an increase in absolute resistance and a substantial variation of the resistance even when the composition is repeatedly subjected to the firing process. The composition for electrodes comprises: about 5 to about 95% by weight of aluminum powder, the aluminum powder having a particle size distribution of about 2.0 or less as expressed by the following Equation (1) and having D50 in the range of about 0.1 ?m?D50?about 20 ?m; about 3 to about 60% by weight of an organic binder; and the balance of a solvent: Particle size distribution=(D90?D10)/D50 ??(1) wherein D10, D50, and D90 represent particle diameters at 10%, 50% and 90% points on an accumulation curve of a particle size distribution when the total weight is 100%. An electrode and a PDP fabricated using the composition are also disclosed.
    Type: Application
    Filed: November 21, 2008
    Publication date: May 28, 2009
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jae Hwi CHO, Kuninori OKAMOTO, Yong Hyun KIM, Hyun Don KIM
  • Publication number: 20090108755
    Abstract: A composition for fabricating an electrode includes an organic binder and a conductive filler. About 3 to about 60 wt. % of the composition is the organic binder, about 5 to about 95 wt. % of the composition is the conductive filler, the conductive filler includes predominantly aluminum, the conductive filler has a flake shape, and the conductive filler has an average thickness of about 0.05 ?m to about 0.75 ?m.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 30, 2009
    Inventors: Jae Hwi Cho, Kuninori Okamoto, Yong Hyun Kim, Hyun Don Kim