Patents by Inventor Woo-Jae Jeong

Woo-Jae Jeong 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: 20160116842
    Abstract: Provided are a photocurable and thermocurable resin composition including: an acid-modified oligomer including an iminocarbonate-based compound containing a carboxyl group and a photocurable unsaturated functional group; a photopolymerizable monomer having two or more photocurable unsaturated functional groups; a thermocurable binder having a thermally curable functional group; a functional filler including one or more selected from the group consisting of carbon allotrope particles having a ceramic compound bound to a surface thereof and heat radiating ceramic particles; and a photoinitiator, and a dry film solder resist manufactured therefrom.
    Type: Application
    Filed: October 28, 2015
    Publication date: April 28, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Byung Ju CHOI, You Jin KYUNG, Woo Jae JEONG, Bo Yun CHOI, Kwang Joo LEE, Min Su JEONG
  • Publication number: 20150366070
    Abstract: The present invention relates to a preparation method for a dry film solder resist (DFSR) capable of forming the DFSR having fine unevenness on a surface by a more simplified method, and a film laminate used therein. The preparation method for a dry film solder resist includes forming a predetermined photo-curable and heat-curable resin composition on a transparent carrier film having a surface on which a fine unevenness having an average roughness (Ra) of 200 nm to 2 ?m is formed; laminating the resin composition on a substrate to form a laminated structure in which the substrate, the resin composition, and the transparent carrier film are sequentially formed; exposing the resin composition and delaminating the transparent carrier film; and alkaline-developing the resin composition in a non-exposure part and performing heat-curing.
    Type: Application
    Filed: September 22, 2014
    Publication date: December 17, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Min Su JEONG, You Jin KYUNG, Byung Ju CHOI, Woo Jae JEONG, Bo Yun CHOI, Kwang Joo LEE, Se Jin KU
  • Patent number: 9134609
    Abstract: The present invention relates to a photo-curable and thermo-curable resin composition that can provide a dry film solder resist having a higher glass transition temperature and improved heat resistance reliability, and the dry film solder resist. Said resin composition may include an acid-modified oligomer including an iminocarbonate-based compound having a carboxy group (—COOH) and a photo-curable unsaturated functional group, a photo-polymerizable monomer having two or more photo-curable unsaturated functional groups, a thermo-curable binder having a thermo-curable functional group, and a photo-initiator.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: September 15, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Se-Jin Ku, Byung-Ju Choi, Woo-Jae Jeong, Bo-Yun Choi, Kwang Joo Lee, Min-Su Jeong
  • Publication number: 20150205202
    Abstract: The present invention relates to a photo-curable and thermo-curable resin composition which can form a DFSR having micro unevenness on the surface without a separate treatment such as plasma treatment and the like and a DFSR. The photo-curable and thermo-curable resin composition includes an acid-modified oligomer having a carboxyl group (—COON) and a photo-curable unsaturated functional group; a polyimide-based resin; a photo-polymerizable monomer having two or more photo-curable unsaturated functional groups; a thermo-curable binder having a thermo-curable functional group; and a photoinitiator.
    Type: Application
    Filed: July 26, 2013
    Publication date: July 23, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Min Su Jeong, Byung Ju Choi, Woo Jae Jeong, Bo Yun Choi, Kwang Joo Lee
  • Publication number: 20150191588
    Abstract: The present invention relates to a photocurable and thermosetting resin composition, including an acid modified oligomer, a photopolymerizable monomer, a thermosetting binder resin, a photoinitiator, two or more kinds of spherical alumina particles having different particle diameters from each other, and an organic solvent, a dry film solder resist obtained from the resin composition, and a circuit board including the dry film solder resist.
    Type: Application
    Filed: June 17, 2014
    Publication date: July 9, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Byung Ju Choi, Woo Jae Jeong, Bo Yun Choi, Kwang Joo Lee, Min Su Jeong, Se Jin Ku
  • Publication number: 20150044611
    Abstract: The present invention relates to a photo-curable and thermo-curable resin composition that can provide a dry film solder resist having a higher glass transition temperature and improved heat resistance reliability, and the dry film solder resist. Said resin composition may include an acid-modified oligomer including an iminocarbonate-based compound having a carboxy group (—COOH) and a photo-curable unsaturated functional group, a photo-polymerizable monomer having two or more photo-curable unsaturated functional groups, a thermo-curable binder having a thermo-curable functional group, and a photo-initiator.
    Type: Application
    Filed: February 20, 2013
    Publication date: February 12, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Se-Jin Ku, Byung-Ju Choi, Woo-Jae Jeong, Bo-Yun Choi, Kwang Joo Lee, Min-Su Jeong
  • Publication number: 20140221519
    Abstract: The present invention relates to a photo-curable and thermo-curable resin composition that can provide a dry film solder resist having a higher glass transition temperature and improved heat resistance reliability, and the dry film solder resist. Said resin composition may include an acid-modified oligomer including an iminocarbonate-based compound having a carboxy group (—COOH) and a photo-curable unsaturated functional group, a photo-polymerizable monomer having two or more photo-curable unsaturated functional groups, a thermo-curable binder having a thermo-curable functional group, and a photo-initiator.
    Type: Application
    Filed: April 4, 2014
    Publication date: August 7, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Se-Jin KU, Byung-Ju CHOI, Woo-Jae JEONG, Bo-Yun CHOI, Kwang Joo LEE, Min-Su JEONG
  • Publication number: 20130063917
    Abstract: The present invention relates to an under-fill dam with high detection probability that is composed of a dry film solder resist and provided in the form of a fence around a chip device in order to prevent leaks of an under-fill material filled in a gap between a substrate and the chip device.
    Type: Application
    Filed: May 11, 2011
    Publication date: March 14, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Byung-Ju Choi, Woo-Jae Jeong, Bo-Yun Choi, Kwang-Joo Lee, Min-Su Jeong
  • Patent number: 8349538
    Abstract: The present invention relates to a photo-curable and thermo-curable resin composition and a dry film solder resist making it possible to provide the dry film solder resist having superior heat-resistance and dimensional stability while exhibiting improved alkali developing properties. The resin composition may comprise an acid-modified oligomer having carboxyl group (—COOH) and photo-curable functional group; a photo-polymerizable monomer comprising a compound having a structure that three or more functional epoxy-acrylate groups are bonded to a heterocyclic structure containing nitrogen, and a functional group having carboxyl group is bonded to at least one epoxy-acrylate group; a thermo-curable binder having thermo-curable functional group; and a photo-initiator.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: January 8, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Woo-Jae Jeong, Byung-Ju Choi, Bo-Yun Choi, Kwang-Joo Lee, Min-Su Jeong
  • Patent number: 8334092
    Abstract: The present invention relates to a photo-sensitive resin composition having superior heat-resistant and mechanical property, and a protective film for printed circuit board, and particularly provides a photo-sensitive resin composition including an acid-modified oligomer, a photo-polymerizable monomer, a photo-initiator, an epoxy resin, and a butadiene-modified epoxy resin including epoxy group and at least one double bond in the main chain, and a protective film for printed circuit board prepared by using the composition.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: December 18, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Bo-Yun Choi, Byung-Ju Choi, Woo-Jae Jeong, Kwang-Joo Lee, Min-Su Jeong
  • Publication number: 20120070780
    Abstract: The present invention relates to a photosensitive resin composition including an acid modified oligomer, a photopolymerizable monomer, a thermosetting binder resin, a photoinitiator, and a thioxanthone compound, a dry film solder resist obtained from the resin composition, and a circuit board including the dry film solder resist.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 22, 2012
    Applicant: LG CHEM, LTD.
    Inventors: Bo-Yun CHOI, Byung-Ju CHOI, Woo-Jae JEONG, Kwang-Joo LEE, Min-Su JEONG
  • Publication number: 20110269866
    Abstract: The present invention relates to a photo-curable and thermo-curable resin composition and a dry film solder resist make it possible to provide the dry film solder resist having superior heat-resistance and dimensional stability while exhibiting more improved alkali developing property. The resin composition may comprises an acid-modified oligomer having carboxyl group (—COOH) and photo-curable functional group; a photo-polymerizable monomer comprising a compound having a structure of that 3- or more functional epoxy acrylate groups are bonded to a heterocyclic structure containing nitrogen, and a functional group having carboxyl group is bonded to at least one epoxy acrylate group; a thermo-curable binder having thermo-curable functional group; and a photo-initiator.
    Type: Application
    Filed: July 11, 2011
    Publication date: November 3, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Woo-Jae JEONG, Byung-Ju CHOI, Bo-Yun CHOI, Kwang-Joo LEE, Min-Su JEONG
  • Publication number: 20110245363
    Abstract: The present invention relates to a photo-sensitive resin composition having superior heat-resistant and mechanical property, and a protective film for printed circuit board, and particularly provides a photo-sensitive resin composition including an acid-modified oligomer, a photo-polymerizable monomer, a photo-initiator, an epoxy resin, and a butadiene-modified epoxy resin including epoxy group and at least one double bond in the main chain, and a protective film for printed circuit board prepared by using the composition.
    Type: Application
    Filed: June 20, 2011
    Publication date: October 6, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Bo-Yun CHOI, Byung-Ju CHOI, Woo-Jae JEONG, Kwang-Joo LEE, Min-Su JEONG