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: 20150111009
    Abstract: The present specification relates to a photoresist resin composition, a touch panel including a bezel pattern manufactured by using the photoresist resin composition, and a display device including the bezel pattern manufactured by using the photoresist resin composition.
    Type: Application
    Filed: April 17, 2013
    Publication date: April 23, 2015
    Applicant: LG CHEM, LTD.
    Inventors: Dongchang Choi, Kwang Han Park, Kyung Soo Choi, Geun Young Cha, Sang Chul Lee, Heeyoung Oh
  • Patent number: 8822132
    Abstract: A colored dispersion according to the present invention comprises a resin including monomers of Formulas 1 to 4, as a binder resin. Accordingly, a photoresist composition for a black matrix of a high light shielding property, which has the dispersion stability of the colored dispersion according to the present invention, could be provided, and a black matrix of high sensibility having an uniform process characteristic while maintaining a high light-shielding property could be produced.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: September 2, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong-Chang Choi, Kyung-Soo Choi, Ho-Chan Ji, Geun-Young Cha, Min-Young Lim, Sung-Hyun Kim, Han-Soo Kim, Yoon-Hee Heo, Ji-Heum Yoo
  • Patent number: 8822127
    Abstract: A photosensitive resin composition for a black matrix and a black matrix formed with the same are provided. The photosensitive resin composition for a black matrix includes a solvent consisting of 5-30 weight % of a first solvent having a boiling point of 110-159° C., 55-90 weight % of a second solvent having a boiling point of 160-200° C., and 3-15 weight % of a third solvent having a boiling point of 201-280° C., and the first solvent, the second solvent, and the third solvent are an aliphatic compound and use at least one solvent composition selected from a group consisting of alkyl ester, alkyl ketone, alkyl ether, and alkyl alcohol, and thus a uniform thin film having no surface defect can be obtained, and the photosensitive resin composition has an excellent process property while securing a high light shielding property and thus a black matrix pattern having a few defect can be obtained, and is thus useful for a liquid crystal display.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: September 2, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Dong Chang Choi, Kyung Soo Choi, Ho Chan Ji, Geun Young Cha, Sung-Hyun Kim
  • Publication number: 20140212812
    Abstract: The present application relates to a fluorine-based resin having a novel structure and a photosensitive resin composition including the same. The photosensitive resin composition including the fluorine-based resin according to an exemplary embodiment of the present application has excellent photosensitivity and developability and can increase a contact angle of a coating film to prevent a water stain. Accordingly, the photosensitive resin composition including the fluorine-based resin according to the exemplary embodiment of the present application may be applied to various photosensitive materials, and particularly, may be preferably applied when a color filter pattern for LCD is manufactured.
    Type: Application
    Filed: May 31, 2012
    Publication date: July 31, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Minjung Kim, Han Soo Kim, Kyung Soo Choi
  • Patent number: 8597861
    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: Grant
    Filed: March 6, 2008
    Date of Patent: December 3, 2013
    Assignee: 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
  • Patent number: 8535874
    Abstract: Provided is a novel fluorene-based polymer having urethane bonds and a method for preparing the fluorene-based polymer. According to the method, a diol compound is condensed with a diisocyanate instead of an acid dianhydride, and then an acid anhydride is reacted with the reaction mixture to introduce desired acid groups into the final polymer. Further provided is a negative-type photosensitive resin composition comprising of the fluorene-based polymer as a binder resin. The composition exhibits improved chemical resistance, good development margin and high sensitivity due to presence of the acid groups despite the low molecular weight of the fluorene-based polymer.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: September 17, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Han Soo Kim, Sung Hyun Kim, Dong Chang Choi, Kyung Soo Choi, Ho Chan Ji, Min Young Lim, Geun Young Cha, Yoon Hee Heo, Ji Heum Yoo, Sun Hwa Kim
  • Patent number: 8338559
    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: Grant
    Filed: January 21, 2008
    Date of Patent: December 25, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Yoon-Hee Heo, Kyung-Soo Choi, Han-Soo Kim, Min-Young Lim, Ji-Heum Yoo
  • Publication number: 20120189961
    Abstract: The present invention relates to a photosensitive resin composition and a photosensitive material comprising the same. The photosensitive resin composition according to an exemplary embodiment of the present invention may comprise two multi-functional monomers where structures of side chains comprising unsaturated double bonds are different from each other while a composition ratio is changed. Accordingly, in the exemplary embodiment of the present invention, processability is excellent, and it is possible to decrease defects by a rupture when a LCD substrate is sealed and substrate separation defects due to an impact to the LCD products by improving an adhesion property to a lower substrate after a hard baking process.
    Type: Application
    Filed: January 18, 2012
    Publication date: July 26, 2012
    Applicant: LG CHEM, LTD.
    Inventors: Ho Chan JI, Sunghyun KIM, Dongchang CHOI, Kyung Soo CHOI, Geun Young CHA, Sang Chul LEE
  • Publication number: 20120139785
    Abstract: Provided is a system for collecting and managing rainfall attenuation data and rainfall intensity data in a satellite communication system. The system may include: a satellite transmitter to transmit a satellite beacon signal; a Global Positioning System (GPS) to transmit a GPS signal; at least one data collecting apparatus to generate rainfall attenuation data about the satellite beacon signal when the satellite beacon signal is received from the satellite transmitter, and to generate rainfall intensity data within a valid path length of rainfall attenuation, to extract time information from the GPS signal, and to assign the time information to the rainfall attenuation data and the rainfall intensity data; and a data managing apparatus to receive, from the at least one data collecting apparatus, the rainfall attenuation data and the rainfall intensity data assigned with the time information, and to manage the received rainfall attenuation data and rainfall intensity data.
    Type: Application
    Filed: November 30, 2011
    Publication date: June 7, 2012
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kyung Soo CHOI, Jae Hoon KIM, Do Seob AHN
  • Patent number: 8137873
    Abstract: The present invention relates to a method of manufacturing a color filter and a color filter manufactured by using the same. More particularly, the present invention relates to a method of manufacturing a color filter that includes a) applying a light blocking part material on a substrate; b) prebaking the light blocking part material to form a light blocking layer; c) selectively exposing and developing the light blocking layer to form a light blocking part pattern; d) precuring the light blocking part pattern; e) applying a solution on the substrate on which the light blocking part pattern is formed; f) postbaking the light blocking part and the solution; and g) filling ink in a pixel unit that is defined by the light blocking part pattern, and a color filter manufactured by using the same.
    Type: Grant
    Filed: February 1, 2008
    Date of Patent: March 20, 2012
    Assignee: LG Chem, Ltd.
    Inventors: Hyun-Sik Kim, Kyung-Soo Choi
  • Publication number: 20110151379
    Abstract: The present invention relates to a black matrix photosensitive resin composition having high light-shielding and improved adhesion properties and a black matrix for a liquid crystal display including the same. The black matrix photosensitive resin composition comprises an alkali-soluble binder resin, a multi-functional monomer having an ethylenic unsaturated double bond, a photopolymerization initiator, an adhesion accelerator, a solvent, and a colorant comprising black pigments. A Cardo type binder is mixed in an amount of 10 to 90 wt % and an acryl type binder is mixed in an amount of 10 to 90 wt % based on a total weight of the alkali-soluble binder resin including the Cardo type binder and the acryl type binder.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 23, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Dong Chang Choi, Kyung Soo Choi, Ho Chan Ji, Geun Young Cha, Sang Chul Lee
  • Publication number: 20110101268
    Abstract: A photosensitive resin composition for a black matrix and a black matrix formed with the same are provided. The photosensitive resin composition for a black matrix includes a solvent consisting of 5-30 weight % of a first solvent having a boiling point of 110-159° C., 55-90 weight % of a second solvent having a boiling point of 160-200° C., and 3-15 weight % of a third solvent having a boiling point of 201-280° C., and the first solvent, the second solvent, and the third solvent are an aliphatic compound and use at least one solvent composition selected from a group consisting of alkyl ester, alkyl ketone, alkyl ether, and alkyl alcohol, and thus a uniform thin film having no surface defect can be obtained, and the photosensitive resin composition has an excellent process property while securing a high light shielding property and thus a black matrix pattern having a few defect can be obtained, and is thus useful for a liquid crystal display.
    Type: Application
    Filed: September 28, 2009
    Publication date: May 5, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Dong Chang Choi, Kyung Soo Choi, Ho Chan Ji, Geun Young Cha, Sung-Hyun Kim
  • Publication number: 20100201925
    Abstract: Provided is a novel fluorene-based polymer having urethane bonds and a method for preparing the fluorene-based polymer. According to the method, a diol compound is condensed with a diisocyanate instead of an acid dianhydride, and then an acid anhydride is reacted with the reaction mixture to introduce desired acid groups into the final polymer. Further provided is a negative-type photosensitive resin composition comprising of the fluorene-based polymer as a binder resin. The composition exhibits improved chemical resistance, good development margin and high sensitivity due to presence of the acid groups despite the low molecular weight of the fluorene-based polymer.
    Type: Application
    Filed: September 26, 2008
    Publication date: August 12, 2010
    Applicant: LG CHEM LTD.
    Inventors: Han Soo Kim, Sung Hyun Kim, Dong Chang Choi, Kyung Soo Choi, Ho Chan Ji, Min Young Lim, Geun Young Cha, Yoon Hee Heo, Ji Heum Yoo, Sun Hwa Kim
  • Publication number: 20100126367
    Abstract: The present invention relates to a method for etching glass or metal using a negative photoresist and a method for fabricating a cliche using the same. In the method for etching glass or metal according to the present invention, since adhesion strength between the negative photoresist and the metal or the metal oxide is excellent, the photoresist layer is not corroded by the metal or metal oxide etching solution, it is unnecessary to produce an inverse photomask, the fabrication process is simple, and a low resolution light source such as mixed wavelength type light source is capable of being used, thus, economic efficiency is ensured.
    Type: Application
    Filed: September 22, 2008
    Publication date: May 27, 2010
    Inventors: Ji-Su Kim, Kyoung-Su Jeon, Kyung-Soo Choi, Gi-Ra Yi, Seung-Heon Lee, Dong-Myung Shin
  • Publication number: 20100104981
    Abstract: A colored dispersion according to the present invention comprises a resin including monomers of Formulas 1 to 4, as a binder resin. Accordingly, a photoresist composition for a black matrix of a high light shielding property, which has the dispersion stability of the colored dispersion according to the present invention, could be provided, and a black matrix of high sensibility having an uniform process characteristic while maintaining a high light-shielding property could be produced.
    Type: Application
    Filed: November 10, 2008
    Publication date: April 29, 2010
    Inventors: Dong Chang Choi, Kyung Soo Choi, Ho Chan Ji, Geun Young Cha, Min Young Lim, Sung Hyun Kim, Han soo Kim, Yoon Hee Heo, Ji Heum Yoo
  • Publication number: 20100103548
    Abstract: The present invention relates to a method of manufacturing a color filter and a color filter manufactured by using the same. More particularly, the present invention relates to a method of manufacturing a color filter that includes a) applying a light blocking part material on a substrate; b) prebaking the light blocking part material to form a light blocking layer; c) selectively exposing and developing the light blocking layer to form a light blocking part pattern; d) precuring the light blocking part pattern; e) applying a solution on the substrate on which the light blocking part pattern is formed; f) postbaking the light blocking part and the solution; and g) filling ink in a pixel unit that is defined by the light blocking part pattern, and a color filter manufactured by using the same.
    Type: Application
    Filed: February 1, 2008
    Publication date: April 29, 2010
    Inventors: Hyun-Sik Kim, Kyung-Soo Choi
  • Publication number: 20100085518
    Abstract: The present invention relates to a photosensitive resin composition for a black matrix, a black matrix produced by the composition and a liquid crystal display including the black matrix. The resin composition for a black matrix comprising a fluorene-based resin polymer as a resin binder has high sensitivity and optical density, and excellent development adherence.
    Type: Application
    Filed: February 21, 2008
    Publication date: April 8, 2010
    Inventors: Kyung-Soo Choi, Yoon-Hee Heo, Dong-Chang Choi, Ho-Chan Ji, Geun-Young Cha, Dae-Hyun Kim
  • 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