Patents by Inventor Hee-Jung Kim

Hee-Jung Kim 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).

  • Composition for forming gate insulating layer of organic thin-film transistor and organic thin film transistor using the same
    Patent number: 8057870
    Abstract: The present invention relates to a composition for forming a gate insulating layer of an organic thin film transistor comprising polyarylate, and an organic thin film transistor comprising a gate insulating layer, which is formed using the composition, in contact with an organic semiconductor channel.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: November 15, 2011
    Assignee: LG Chem, Ltd.
    Inventors: Jae-Min Lee, Hyeon Choi, Min-Jeong Lee, Hee-Jung Kim, Young-Whan Park, Dong-Ryul Kim
  • POLYAMIC ACID, POLYIMIDE, PHOTOSENSITIVE RESIN COMPOSITION COMPRISING THE SAME AND DRY FILM MANUFACTURED BY THE SAME
    Publication number: 20110200939
    Abstract: The present invention relates to a polyamic acid or polyimide comprising a heat-polymerizable or photo-polymerizable functional group, a photosensitive resin composition comprising the polyamic acid or the polyimide, a photosensitive resin composition being capable of providing a cured film that can be used for patterning at a high resolution and that has an excellent developing property in an alkaline aqueous solution, flexibility, adhesion strength, resistance to welding heat, and pressure cooker test (PCT) resistance, and a dry film prepared from the composition.
    Type: Application
    Filed: August 27, 2010
    Publication date: August 18, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Kwang-Joo LEE, You-Jin KYUNG, Joo-Eun KO, Heon-Sik SONG, Jung-Jin SHIM, Hee-Jung KIM
  • LOW TEMPERATURE CURABLE PHOTOSENSITIVE RESIN COMPOSITION AND DRY FILM MANUFACTURED BY USING THE SAME
    Publication number: 20110067907
    Abstract: The present invention provides a photosensitive resin composition comprising: a polyamic acid including a specific repeating unit; a heterocyclic amine compound; a (metha)acrylate-based compound including one or more double bonds between carbons; a photoinitiator; and an organic solvent, and a dry film prepared therefrom. The photosensitive resin composition can be cured at a low temperature to offer process safety and work convenience, and has excellent bending resistance, soldering heat resistance, and a property of filling the pattern, as well as excellent heat resistance and mechanical properties.
    Type: Application
    Filed: August 27, 2010
    Publication date: March 24, 2011
    Applicant: LG CHEM, LTD.
    Inventors: Kwang-Joo LEE, Joo-Eun KO, Byung-Nam KIM, Heon-Sik SONG, You-Jin KYUNG, Hee-Jung KIM
  • DEVICE AND METHOD FOR DRIVING DISPLAY PANEL
    Publication number: 20110069232
    Abstract: An apparatus for driving a display panel includes: a time variant signal (TVS) generator configured to generate a time variant signal group; a common pulse signal generator configured to generate a plurality of pulse signals; a selector configured to receive the time variant signal, the plurality of the pulse signals, and video data and select a grayscale voltage corresponding to the video data; and a buffer configured to buffer and transfer an output of the selector. Herein, the selector and the buffer are provided to each of a plurality of channels, and the time variant signal and the plurality of the pulse signals are inputted in common to the selector of each channel.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 24, 2011
    Applicant: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Beom-Jin KIM, Hee-Jung Kim, Dae-Ho Lim, Ki-Seok Cho
  • COMPOSITE MATERIALS, COMPOSITE FILM MANUFACTURED BY USING THE SAME AND METHOD FOR MANUFACTURING COMPOSITE FILM
    Publication number: 20110052890
    Abstract: The present invention provides a composite material comprising a glass cloth; and an organic- inorganic hybrid composition comprising diphenylsilanediol and alkoxy si lane, a composite film manufactured by using the same, and a method for manufacturing the composite film.
    Type: Application
    Filed: October 17, 2008
    Publication date: March 3, 2011
    Inventors: Gi-Cheul Kim, Dong-Ryul Kim, Hee-Jung Kim, Jang-Yeon Hwang, Seung-Lac Ma, Boong-Goon Jeong, Sang-Uk Ryu, Ho-Jun Lee, Ju-Eun Cha, Myeon-Geun Ko
  • Composition for primer coating, optical film comprising the same, and polarizing plate comprising the same
    Publication number: 20100221455
    Abstract: The present invention relates to a primer coating composition, an optical film including the same, and a polarizing plate including the same, the primer coating composition according to the present invention includes 1) a polyvinyl alcohol compound including the acetoacetyl group; 2) an acrylate compound that includes at least two vinyl groups; and 3) a basic catalyst, and an optical film that includes a primer layer formed from the primer coating composition has excellent transparency, optical property, mechanical strength, and attaching property to the polyvinyl alcohol polarizer.
    Type: Application
    Filed: February 24, 2010
    Publication date: September 2, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Hee-Jung Kim, Dong-Ryul Kim, Boong-Goon Jeong
  • METHOD FOR MANUFACTURING TRANSPARENT PLASTIC FILM AND TRANSPARENT PLASTIC FILM MANUFACTURED BY THE METHOD
    Publication number: 20100209701
    Abstract: The present invention provides a method for producing a transparent plastic film, which comprises the steps of (a) preparing a glass flake particle; (b) preparing a curable epoxy resin in which a difference between a refractive index after the curable epoxy resin is cured and a refractive index of the glass flake particle is not more than 0.01; (c) mixing the curable epoxy resin and the glass flake particle with each other; and (d) curing a mixture of the curable epoxy resin and the glass flake particle to form an epoxy curing substance that includes the glass flake particle, and a transparent plastic film that is produced by using the same.
    Type: Application
    Filed: June 27, 2008
    Publication date: August 19, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Gi-Cheul Kim, Dong-Ryul Kim, Hee-Jung Kim, Ju-Eun Cha
  • ORGANIC ELECTROLUMINESCENT DEVICE
    Publication number: 20100155714
    Abstract: Disclosed is an organic electroluminescent device including a substrate, a first and a second electrode, and an emitting layer formed between the first electrode and the second electrode. The emitting layer includes a plurality of materials which is a blue emitting material using a following chemical formula as dopant. In this case, at least one of A1 and A2 is selected from a substituted or non-substituted aromatic group, a heterocyclic group, an aliphatic group, and hydrogen.
    Type: Application
    Filed: March 1, 2010
    Publication date: June 24, 2010
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jeong Dae SEO, Kyung Hoon LEE, Hee Jung KIM, Chun Gun PARK, Hyoung Yun OH
  • Process for preparing polyarylate
    Patent number: 7737244
    Abstract: The present invention relates to a process for preparing polyarylate, and more specifically, to a process for preparing polyarylate by interfacial polymerization of a bivalent phenol compound and an aromatic dicarboxylic acid or a halide thereof, which comprises mixing a cationic catalyst for the phase transition and a nonionic surfactant in a predetermined ratio, to further increase the yield of polyarylate, as compared with the case of using each of the nonionic surfactant and the cationic catalyst for the phase transition alone.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: June 15, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Dae-Woo Nam, Dong-Ryul Kim, Hyo-Sun Lee, Boong-Goon Jeong, Sang-Uk Ryu, Hee-Jung Kim, Ju-Eun Cha
  • OPTICAL FILMS, PHASE DIFFERENCE FILMS, AND LCD COMPRISING THE SAME
    Publication number: 20100128206
    Abstract: The present invention relates to an optical film that includes a graft copolymer that includes two types or more of (meth)acryl based resins that have different glass transition temperatures, a retardation film, a method of producing the same, and a polarizing plate and a liquid crystal display device that include the optical film or the retardation film.
    Type: Application
    Filed: June 12, 2008
    Publication date: May 27, 2010
    Inventors: Hee-Jung Kim, Dong-Ryul Kim, Boong-Goon Jeong, Ju-Eun Cha, Young-Whan Park, Dae-Woo Nam
  • OPTICAL FILM AND LIQUID CRYSTAL DISPLAY COMPRISING THE SAME
    Publication number: 20100104776
    Abstract: The present invention relates to an optical film comprising a block copolymer which comprises a block containing 50 mol % or more of (meth)acrylate, a production method thereof, and a liquid crystal display comprising the optical film. The optical film according to the present invention has excellent transparency and physical properties, and improved moisture absorption, as compared to a conventional acrylate film.
    Type: Application
    Filed: April 16, 2008
    Publication date: April 29, 2010
    Inventors: Hee-Jung Kim, Dong-Ryul Kim, Young-Whan Park, Dae-Woo Nam, Boong-Goon Jeong, Ju-Eun Cha
  • Organic electroluminescent device
    Patent number: 7700201
    Abstract: Disclosed is an organic electroluminescent device including a substrate, a first and a second electrode, and an emitting layer formed between the first electrode and the second electrode. The emitting layer includes a plurality of materials which is a blue emitting material using a following chemical formula as dopant. In this case, at least one of A1 and A2 is selected from a substituted or non-substituted aromatic group, a heterocyclic group, an aliphatic group, and hydrogen.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: April 20, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong Dae Seo, Kyung Hoon Lee, Hee Jung Kim, Chun Gun Park, Hyoung Yun Oh
  • Negative C-type compensation film and method of preparing the same
    Patent number: 7682672
    Abstract: Disclosed are a negative C-type compensation film and a method of preparing the same. The negative C-type compensation film includes a) a base layer, and b) a polymer layer comprising polyarylate prepared by a method comprising the step of copolymerizing divalent phenols, divalent aromatic carboxylic acid halides, and allyl bisphenol derivatives, the base layer and the polymer layer being sequentially layered. The compensation film is capable of being used for the negative C-type compensation film without a stretching process, significantly reduces the thickness of the compensation film, and has significantly improved interlayer adhesion force in a multilayer structure.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: March 23, 2010
    Assignee: LG Chem, Ltd.
    Inventors: Hyo Sun Lee, Dong Ryul Kim, Hee Jung Kim, Dae Woo Nam, Sang Uk Ryu, Boong Goon Jeong, Ju Eun Cha, Ho Jun Lee
  • OPTICAL FILMS, RETARDATION FILMS, AND LIQUID CRYSTAL DISPLAY COMPRISING THE SAME
    Publication number: 20100060827
    Abstract: The present invention relates to an optical film that comprises a block copolymer that comprises a vinyl polymer block containing styrene or a derivative thereof, and a poly-dimethylsiloxane block, a retardation film using the same, a method of manufacturing them, and a liquid crystal display comprising the films.
    Type: Application
    Filed: April 14, 2008
    Publication date: March 11, 2010
    Applicant: LG CHEM, LTD.
    Inventors: Hee-Jung Kim, Dong-Ryul Kim, Young-Whan Park, Dae-Woo Nam, Boong-Goon Jeong
  • COLUMN DATA DRIVING CIRCUIT, DISPLAY DEVICE WITH THE SAME, AND DRIVING METHOD THEREOF
    Publication number: 20100045638
    Abstract: Provided are a column data driver configured to apply a voltage or current corresponding to image data to a display panel, a display device having the column data driver, and a driving method of the display device. The column data driving circuit includes a precharge unit configured to precharge at least one of a plurality of column lines in response to a plurality of preset signals corresponding to image data; and a driving unit configured to sequentially drive the plurality of column lines in response to a data signal corresponding to the image data.
    Type: Application
    Filed: May 29, 2009
    Publication date: February 25, 2010
    Inventors: Ki- Seok CHO, Hee-Jung Kim, Dae-Ho Lim
  • Organic electroluminescent device
    Patent number: 7651788
    Abstract: Disclosed is an organic electroluminescent device including a substrate, a first and second electrode formed on the substrate, and a light-emitting layer formed between the first electrode and the second electrode. The light-emitting layer includes a plurality of materials which is a green luminescent material using a following chemical formula as a dopant. In this case, at least one of A1 and A2 is selected from a substituted or non-substituted aromatic group, a heterocyclic group, an aliphatic group, and hydrogen.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: January 26, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong Dae Seo, Hee Jung Kim, Kyung Hoon Lee, Hyoung Yun Oh, Myung Seop Kim, Chun Gun Park
  • Organic electroluminescent device
    Patent number: 7651787
    Abstract: Disclosed is an organic electroluminescent device including a substrate, a first and second electrodes, and a light-emitting layer formed between the first electrode and the second electrode, and a hole-blocking layer formed between the light-emitting layer and the second electrode and using a material of a chemical formula 1. In this case, at least one of A1 and A2 is selected from a substituted or non-substituted aromatic group, a heterocyclic group, an aliphatic group, halogen, and hydrogen.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: January 26, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong Dae Seo, Hee Jung Kim, Kyung Hoon Lee, Hyoung Yun Oh, Myung Seop Kim, Chun Gun Park
  • Composition for Forming Gate Insulating Layer of Organic Thin-Film Transistor and Organic Thin Film Transistor Using the Same
    Publication number: 20090166613
    Abstract: The present invention relates to a composition for forming a gate insulating layer of an organic thin film transistor comprising polyarylate, and an organic thin film transistor comprising a gate insulating layer, which is formed using the composition, in contact with an organic semiconductor channel.
    Type: Application
    Filed: May 3, 2007
    Publication date: July 2, 2009
    Inventors: Jae-Min Lee, Hyeon Choi, Min-Jeong Lee, Hee-Jung Kim, Young-Whan Park, Dong-Ryul Kim
  • Organic electroluminescent device and method for fabricating the same
    Patent number: 7541097
    Abstract: Disclosed are an organic electroluminescent device and a method for fabricating the same. The device includes a substrate, a first electrode formed on the substrate, an emission layer formed over the first electrode, and having a first emission area, a second emission area, and a third emission area, a hole blocking layer formed on the emission layer, the hole blocking layer being formed of the same substance as that of the third emission area, and a second electrode formed over the hole blocking layer.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: June 2, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong Dae Seo, Hee Jung Kim, Kyung Hoon Lee, Hyoung Yun Oh, Myung Seop Kim, Chun Gun Park
  • Process for Preparing Polyarylate
    Publication number: 20090036634
    Abstract: The present invention relates to a process for preparing polyarylate, and more specifically, to a process for preparing polyarylate by interfacial polymerization of a bivalent phenol compound and an aromatic dicarboxylic acid or a halide thereof, which comprises mixing a cationic catalyst for the phase transition and a nonionic surfactant in a predetermined ratio, to further increase the yield of polyarylate, as compared with the case of using each of the nonionic surfactant and the cationic catalyst for the phase transition alone.
    Type: Application
    Filed: February 16, 2007
    Publication date: February 5, 2009
    Inventors: Dae-Woo Nam, Dong-Ryul Kim, Hyo-Sun Lee, Boong-Goon Jeong, Sang-Uk Ryu, Hee-Jung Kim, Ju-Eun Cha