Patents by Inventor Han-Bok Joo

Han-Bok Joo 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: 9593241
    Abstract: The present invention relates to a resin composition for encapsulating an optical device and more particularly, the resin composition for encapsulating optical device of the invention comprising a polyhedral oligomeric silsesquioxane (POSS) of which the compatibility with resins is enhanced by its cross-linking ability and an organic polysilazane compound has excellent mechanical properties, and enhanced adhesive strengths to a base material and barrier properties against moisture or oxygen by having excellent solubility with siloxane resins and significantly improved outgassing phenomenon, thus being able to be applied to encapsulation process for various optical devices, especially the encapsulation process of thick films.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: March 14, 2017
    Assignee: DONGJIN SEMICHEM CO., LTD.
    Inventors: Han Bok Joo, Sun Sik Song, Hyeok Yong Kwon, Eun Ju Park, Jae Hyun Kim, Young Je Kwark, Hee Chun Eun, Hee Eun Im
  • Publication number: 20150376407
    Abstract: The present invention relates to a resin composition for encapsulating an optical device and more particularly, the resin composition for encapsulating optical device of the invention comprising a polyhedral oligomeric silsesquioxane (POSS) of which the compatibility with resins is enhanced by its cross-linking ability and an organic polysilazane compound has excellent mechanical properties, and enhanced adhesive strengths to a base material and barrier properties against moisture or oxygen by having excellent solubility with siloxane resins and significantly improved outgassing phenomenon, thus being able to be applied to encapsulation process for various optical devices, especially the encapsulation process of thick films.
    Type: Application
    Filed: February 24, 2014
    Publication date: December 31, 2015
    Applicant: DONGJIN SEMICHEM CO., LTD.
    Inventors: Han Bok JOO, Sun Sik SONG, Hyeok Yong KWON, Eun Ju PARK, Jae Hyun KIM, Young Je KWARK, Hee Chun EUN, Hee Eun IM
  • Patent number: 8362690
    Abstract: The present invention relates to a sealing method for a display element, and more particularly, to a sealing method for a display element which fundamentally prevents an error due to contact between light emitting bodies of upper and lower sealing members by protecting a surface of a light emitting layer and an electrode with a curing body of a photocurable transparent composition, enhances workability of a display element sealing, provides good moisture resistance and adhesiveness and improves an aperture ratio of a display element by making a top emission available to thereby make a thinner, larger display element.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: January 29, 2013
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Jung-Hyun Son, Han-Bok Joo, Sang-Kyu Lee, Jong-Dai Park
  • Patent number: 7964521
    Abstract: The present invention relates to a getter paste composition, and more particularly, to a getter paste composition which is quickly densified at low densification temperatures to be applied to a device that is weak to heat, provides good adhesiveness, controls moisture and gas effectively and is screen-printable to thereby improve productivity.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: June 21, 2011
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Jung-Hyun Son, Sang-Kyu Lee, Han-Bok Joo, Jong-Dai Park
  • Patent number: 7923393
    Abstract: The present invention relates to a low melting point frit paste composition and a sealing method for an electric element using the same, and more particularly, to a low melting point frit paste composition which is sealable and appropriate for a flat panel, protects an element weak to heat and improves a process yield with good print properties, and a sealing method for an electric element using the same.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: April 12, 2011
    Assignee: DONGJIN SEMICHEM Co., Ltd.
    Inventors: Jung-Hyun Son, Sang-Kyu Lee, Han-Bok Joo
  • Patent number: 7863207
    Abstract: The present invention relates to a glass frit and a sealing method for an electric element using the same, and more particularly, to a glass frit which provides a good sealing effect to moisture and gas and is processable at low temperatures, and a sealing method for an electric element using the same.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: January 4, 2011
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Jung-Hyun Son, Sang-Kyu Lee, Han-Bok Joo, Jong-Dai Park
  • Publication number: 20090136766
    Abstract: The present invention relates to a low melting point frit paste composition and a sealing method for an electric element using the same, and more particularly, to a low melting point frit paste composition which is sealable and appropriate for a flat panel, protects an element weak to heat and improves a process yield with good print properties, and a sealing method for an electric element using the same.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 28, 2009
    Applicant: DONGJIN SEMICHEM CO., LTD.
    Inventors: JUNG-HYUN SON, SANG-KYU LEE, HAN-BOK JOO
  • Publication number: 20090065049
    Abstract: The present invention relates to a getter paste composition, and more particularly, to a getter paste composition which is quickly densified at low densification temperatures to be applied to a device that is weak to heat, provides good adhesiveness, controls moisture and gas effectively and is screen-printable to thereby improve productivity.
    Type: Application
    Filed: September 4, 2008
    Publication date: March 12, 2009
    Applicant: DONGJIN SEMICHEM Co., Ltd.
    Inventors: Jung-Hyun Son, Sang-Kyu Lee, Han-Bok Joo, Jong-Dai Park
  • Publication number: 20090064717
    Abstract: The present invention relates to a glass frit and a sealing method for an electric element using the same, and more particularly, to a glass frit which provides a good sealing effect to moisture and gas and is processable at low temperatures, and a sealing method for an electric element using the same.
    Type: Application
    Filed: September 2, 2008
    Publication date: March 12, 2009
    Applicant: DONGJIN SEMICHEM Co., Ltd.
    Inventors: JUNG-HYUN SON, SANG-KYU LEE, HAN-BOK JOO, JONG-DAI PARK
  • Publication number: 20090029623
    Abstract: The present invention relates to a sealing method for a display element, and more particularly, to a sealing method for a display element which fundamentally prevents an error due to contact between light emitting bodies of upper and lower sealing members by protecting a surface of a light emitting layer and an electrode with a curing body of a photocurable transparent composition, enhances workability of a display element sealing, provides good moisture resistance and adhesiveness and improves an aperture ratio of a display element by making a top emission available to thereby make a thinner, larger display element.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 29, 2009
    Applicant: DONGJIN SEMICHEM Co., Ltd.
    Inventors: Jung-Hyun Son, Han-Bok Joo, Sang-Kyu Lee, Jong-Dai Park