Patents by Inventor Kyung-Soo Choi

Kyung-Soo Choi 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: 20100062377
    Abstract: The present invention relates to a method for manufacturing a color filter and a color filter manufactured by using the same. More particularly, the present invention pertains to a method for manufacturing a color filter, which includes performing plasma treatment of a black matrix (BM) pattern formed on a substrate to increase a difference in ink repellency of the black matrix pattern and a pixel unit, and a color filter manufactured by using the same. When the production method of the present invention is used, it is possible to provide the color filter in which color mixing does not occur in a pixel unit or between pixel units during discharging of ink by using an inkjet printing process, discoloration due to unfilling does not occur, a surface is uniform, and there is an insignificant step in the pixel unit or between the pixel units.
    Type: Application
    Filed: March 6, 2008
    Publication date: March 11, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Dae-Hyun Kim, Dong-Chang Choi, Kyung-Soo Choi, Ho-Chan Ji, Hyun-Sik Kim, Geun-Young Cha, Sung-Hyun Kim, Jae-Joon Kim, Min-A Yu, Mi-Ae Kim, Mi-Kyoung Kim
  • Publication number: 20100029892
    Abstract: The present invention relates to a fluorene-based resin polymer having a repeating unit of Formula 1 and a method for preparing the same. The fluorene-based resin polymer has a high molecular weight and low acid value, and has an excellent developing property, adhesive property, and stability.
    Type: Application
    Filed: January 21, 2008
    Publication date: February 4, 2010
    Inventors: Yoon-Hee Heo, Kyung-Soo Choi, Han-Soo Kim, Min-Young Lim, Ji-Heum Yoo
  • Patent number: 7567778
    Abstract: Provided are an apparatus for controlling a switch of a satellite transponder for multibeam communication, and a method thereof. The apparatus and method can increase output efficiency of communicated satellite electric wave signals and reuse frequencies in one-to-one earth station communication or a one-to-multi earth station communication.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: July 28, 2009
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin-Ho Jo, Kyung-Soo Choi, Jong-Won Eun, Seong-Pal Lee
  • Publication number: 20070149119
    Abstract: Provided are an apparatus for controlling a switch of a satellite transponder for multibeam communication, and a method thereof. The apparatus and method can increase output efficiency of communicated satellite electric wave signals and reuse frequencies in one-to-one earth station communication or a one-to-multi earth station communication.
    Type: Application
    Filed: November 18, 2004
    Publication date: June 28, 2007
    Inventors: Jin-Ho Jo, Kyung-Soo Choi, Jong-Won Eun, Seong-Pal Lee
  • Patent number: 7172996
    Abstract: The present invention relates to a composition for cleaning a photoresist and is to provide a cleaning composition wherein the residue of the photoresist does not remain on the boundary surface between the cleaned area and the not-cleaned area after a negative photoresist containing pigment is cleaned, soft-baked, exposed and developed. The present invention provides a composition for cleaning a positive or negative photoresist which comprises (a) from 0.1 to 20 wt. % of and alkyl oxide polymer with a molecular weight of from 50 to 2000 and (b) from 80 to 99.9 wt. % of an organic solvent comprising: (b?1) from 1 to 20 parts by weight of dipropylene glycol methyl ether (DPGME), from 10 to 50 parts by weight of N-methyl pyrolidone (NMP) and from 50 to 90 parts by weight of methyl isobutyl ketone (MIBK), or (b?2) from 10 to 90 parts by weight of dimethyl formaldehyde (DMF) or dimethylacetamide (DMAc) and from 10 to 50 parts by weight of n-butyl acetate.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: February 6, 2007
    Assignee: Az Electronic Materials USA Corp.
    Inventors: Sae-Tae Oh, Doek-Man Kang, Kyung-Soo Choi
  • Publication number: 20050119142
    Abstract: The present invention relates to a composition for cleaning a photoresist and is to provide a cleaning composition wherein the residue of the photoresist does not remain on the boundary surface between the cleaned area and the not-cleaned area after a negative photoresist containing pigment is cleaned, soft-baked, exposed and developed. The present invention provides a composition for cleaning a positive or negative photoresist which comprises (a) from 0.1 to 20 wt. % of and alkyl oxide polymer with a molecular weight of from 50 to 2000 and (b) from 80 to 99.9 wt. % of an organic solvent comprising: (b?1) from 1 to 20 parts by weight of dipropylene glycol methyl ether (DPGME), from 10 to 50 parts by weight of N-methyl pyrolidone (NMP) and from 50 to 90 parts by weight of methyl isobutyl ketone (MIBK), or (b?2) from 10 to 90 parts by weight of dimethyl formaldehyde (DMF) or dimethylacetamide (DMAc) and from 10 to 50 parts by weight of n-butyl acetate.
    Type: Application
    Filed: January 9, 2003
    Publication date: June 2, 2005
    Inventors: Sae-Tae Oh, Doek-Man Kang, Kyung-Soo Choi