Patents by Inventor Kil Sung Lee

Kil Sung Lee 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: 20090182079
    Abstract: Disclosed herein are carbon black surface-modified with benzene compound of Formula 1 described in the specification and a carbon black dispersion composition for a black matrix using the carbon black. The carbon black dispersion composition uses carbon black surface-modified with the benzene compound of Formula 1, or about 0.1 to about 20% by weight of a cardo compound selected from cardo monomers, oligomers, polymers and mixtures thereof. The carbon black dispersion composition can provide improved adhesive properties, uniformity and resolution of black matrix patterns, and no undercut is formed on the black matrix patterns.
    Type: Application
    Filed: November 26, 2008
    Publication date: July 16, 2009
    Applicant: Cheil Industries Inc.
    Inventors: Kil Sung LEE, Jae Hyun KIM, Eui June JEONG, Chun Woo LEE
  • Publication number: 20090146236
    Abstract: The present invention provides a photosensitive resin composition for a pad protective layer that includes (A) an alkali soluble resin, (B) a reactive unsaturated compound, (C) a photoinitiator, and (D) a solvent. The (A) alkali soluble resin includes a copolymer including about 5 to about 50 wt % of a unit having the Chemical Formula 1, about 1 to about 25 wt % of a unit having the Chemical Formula 2, and about 45 to about 90 wt % of a unit having the Chemical Formula 3, and a method of making an image sensor using the photosensitive resin composition.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 11, 2009
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Kil-Sung LEE, Jae-Hyun KIM, Chang-Min LEE, Eui-June JEONG, Kwen-Woo HAN, O-Bum KWON, Jung-Sik CHOI, Jong-Seob KIM, Tu-Won CHANG, Jung-Hyun CHO, Seul-Young JEONG
  • Publication number: 20090140220
    Abstract: The photosensitive resin composition for a color filter according to one embodiment of the present invention includes (A) a pigment including a repeating unit of the following Formula 1, (B) a binder resin, (C) a photopolymerization initiator, (D) a photopolymerizable monomer, and (E) a solvent: wherein in the above formula, X, m, and n are the same as in the description.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 4, 2009
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Chang-Min LEE, Kil-Sung LEE, Jae-Hyun KIM, Eui-June JEONG
  • Publication number: 20080319145
    Abstract: A thermosetting resin composition for producing a color filter for a CMOS image sensor is provided. The thermosetting resin composition comprises an organic solvent and a self-curing copolymer having structural units represented by Formulae 1, 2, 3 and 4, which are described in the specification.
    Type: Application
    Filed: May 7, 2008
    Publication date: December 25, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: O Bum Kwon, Kil Sung Lee, Jae Hyun Kim, Jung Hyun Kim
  • Patent number: 7452815
    Abstract: Methods of forming integrated circuit devices use metal CMP slurry compositions having relatively low chemical etch rate and relatively high mechanical polishing rate characteristics. The relatively high mechanical polishing rate characteristics are achieved using relatively high concentrations of mechanical abrasive (e.g., ?8 wt %) in combination with sufficient quantities of a wetting agent to inhibit micro-scratching of underlying surfaces (e.g., insulating layers, conductive vias, . . . ) being polished. The slurry compositions also include a highly stable metal-propylenediaminetetraacetate (M-PDTA) complex, which may operate to inhibit metal-oxide re-adhesion on the metal surface being polished and/or inhibit oxidation of the metal surface by chelating with the surface.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: November 18, 2008
    Assignee: Cheil Industries, Inc.
    Inventors: Jae Seok Lee, Kil Sung Lee
  • Publication number: 20080179572
    Abstract: A photosensitive resin composition for producing a color filter is provided. The composition comprises an alkali-soluble resin, a photopolymerizable monomer, a photopolymerization initiator, a pigment, a dispersant and a solvent. As the dispersant, an amino group-containing maleic acid copolymer resin having long side chains is used. The composition can be used to form a pattern of ultra-fine pixels having a size of up to about 1.0 ?m×about 1.0 ?m without leaving any residue. Further provided is a high-resolution color filter for an image sensor produced using the composition.
    Type: Application
    Filed: December 27, 2007
    Publication date: July 31, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jae Hyun KIM, Kil Sung LEE, Eui June JEONG, Chang Min LEE, Sung Hyok KIM
  • Publication number: 20080171271
    Abstract: Provided is a photosensitive resin composition that is developable with an aqueous alkaline solution and is suitable for the production of a color filter for an image sensor. The composition comprises an alkali-soluble resin, a photopolymerizable monomer, a photopolymerization initiator, colorants and a solvent. As the colorants, a pigment and a dye are used in combination. The use of the composition enables the formation of fine pixels that exhibit excellent color reproduction and contrast. Therefore, the composition can be used to produce a high-resolution color filter for an image sensor.
    Type: Application
    Filed: December 27, 2007
    Publication date: July 17, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jae Hyun KIM, Kil Sung LEE, Eui June JEONG, Chang Min LEE, Sung Hyok KIM
  • Publication number: 20080145786
    Abstract: Disclosed is a photosensitive resin composition. The composition comprises [A] an alkali-soluble resin, [B] a photoactive compound and [C] a solvent. The alkali-soluble resin is a copolymer including at least one structural unit with an aziridine group. The composition exhibits good storage stability, high sensitivity, high UV transmittance, high residual film ratio, improved coating uniformity and excellent pattern-forming properties. Further disclosed is an organic insulating film formed using the composition. The organic insulating film has excellent resistance to solvents and chemicals.
    Type: Application
    Filed: October 26, 2007
    Publication date: June 19, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Min Sung KIM, Sang Won CHO, Dong Ju SHIN, Kil Sung LEE
  • Publication number: 20080145783
    Abstract: A photosensitive resin composition is provided. The composition includes an acrylic copolymer, a photoacid generator and a solvent. The acrylic copolymer includes structural units of Formulae 1, 2, 3 and 4, which are described in the specification. The composition exhibits excellent performance characteristics in terms of mechanical and thermal properties, transmittance, insulating properties, transparency, developability, residual film ratio, heat resistance, flatness and the like. Particularly, the use of the composition facilitates the formation of a pattern as an interlayer insulating film. The composition can also be used to produce a thick film with high transmittance. Therefore, the composition is effectively used as a material for an interlayer insulating layer in LCD fabrication processes. An organic insulating film produced using the composition is also provided.
    Type: Application
    Filed: December 6, 2007
    Publication date: June 19, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Sang Won CHO, Min Sung KIM, Dong Ju SHIN, Kil Sung LEE
  • Publication number: 20080146694
    Abstract: A photosensitive resin composition for forming column spacers for a liquid crystal display device is provided. The composition includes an alkali-soluble resin, a reactive unsaturated compound, a photoinitiator and a solvent. The alkali-soluble resin includes structural units represented by Formulae 1, 2 and 3, which are described in the specification. A pattern formed using the composition is also provided. The pattern shows improved thickness uniformity, good developability without leaving any residual image, superior solvent resistance and high recovery rate.
    Type: Application
    Filed: December 10, 2007
    Publication date: June 19, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Jae Sun HAN, Jeong Min HONG, Jung Sik CHOI, Kil Sung LEE
  • Publication number: 20080145772
    Abstract: Disclosed is a pigment dispersion composition for producing a color filter. The pigment dispersion composition comprises a pigment, a binder resin, a dispersant and a solvent. The pigment is a blue anthraquinone pigment and is pretreated with a water-soluble inorganic salt and a wetting agent. The pigment dispersion composition can be used to produce a color filter for a color imaging device with good color separation and high transmittance.
    Type: Application
    Filed: October 24, 2007
    Publication date: June 19, 2008
    Applicant: CHEIL INDUSTRIES INC.
    Inventors: Chang Min LEE, Kil Sung LEE, Jae Hyun KIM, Sung Hyok KIM, Eui June JEONG
  • Publication number: 20080020300
    Abstract: A photosensitive resin composition for a color filter of an image sensor is disclosed. The photosensitive resin composition is developable with an aqueous alkaline solution. The photosensitive resin composition can include (a) an acrylic resin, (b) a photopolymerizable acrylic monomer, (c) a photopolymerization initiator, (d) a pigment dispersion and (e) a solvent wherein the acrylic resin is a copolymer of ethylenically unsaturated monomers and contains 10 to 40 mole % of an ethylenically unsaturated monomer having a carboxyl group. Since the photosensitive resin composition can enable the formation of ultra-fine pixels, it can be used to produce color filters of high-resolution image sensors.
    Type: Application
    Filed: December 28, 2006
    Publication date: January 24, 2008
    Inventors: Kil Sung LEE, Jae Hyun Kim, Chang Min Lee, Eui Jun Jeong, Hee Young Kim, Jee Yun Kim, Gyung Hoon Choo
  • Publication number: 20080015283
    Abstract: Provided herein are one-solution type thermosetting resin compositions that may be useful to form protective films for color filters used in liquid crystal displays or image sensors. According to some embodiments, the resin compositions may include a self-curable copolymer and an epoxy compound. The protective films may exhibit desirable flatness, adhesiveness, transmittance, heat resistance and chemical resistance. Also provided are methods of forming a film on a substrate, and substrates having a film formed thereon. In addition, provided herein are color filters including a film formed from a composition according to an embodiment of the invention, and liquid crystal displays and image sensors including such color filters.
    Type: Application
    Filed: January 17, 2007
    Publication date: January 17, 2008
    Inventors: O. Bum Kwon, Hyun Moon Choi, Sun Yul Lee, Kil Sung Lee
  • Patent number: 6953389
    Abstract: Metal CMP slurry compositions having relatively low chemical etch rate and relatively high mechanical polishing rate characteristics are provided. The relatively high mechanical polishing rate characteristics are achieved using relatively high concentrations of mechanical abrasive (e.g., ?8 wt %) in combination with sufficient quantities of a wetting agent to inhibit micro-scratching of underlying surfaces (e.g., insulating layers, conductive vias, . . . ) being polished. The slurry compositions also include a highly stable metal-propylenediaminetetraacetate (M-PDTA) complex, which may operate to inhibit metal-oxide re-adhesion on the metal surface being polished and/or inhibit oxidation of the metal surface by chelating with the surface.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: October 11, 2005
    Assignee: Cheil Industries, Inc.
    Inventors: Jae Seok Lee, Kil Sung Lee
  • Patent number: 6930054
    Abstract: Disclosed herein are slurry compositions for use in CMP(chemical mechanical polishing) process of metal wiring in manufacturing semiconductor devices, comprising a peroxide, an inorganic acid, a propylenediaminetetraacetate(PDTA)-metal complex, a carboxylic acid, a metal oxide powder, and de-ionized water, wherein the PDTA-metal complex plays a major role in improving overall polishing performance and reproducibility thereof by preventing abraded tungsten oxide from readhesion onto the polished surface, as well as in improving the dispersion stability of the slurry composition.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: August 16, 2005
    Assignees: Cheil Industries, Inc., Samsung Electronics Co., Ltd.
    Inventors: Jae Seok Lee, Won Joong Do, Hyun Soo Roh, Kil Sung Lee, Jong Won Lee, Bo Un Yoon, Sang Rok Hah, Joon Sang Park, Chang Ki Hong
  • Publication number: 20040244911
    Abstract: Disclosed herein are slurry compositions for use in CMP (chemical mechanical polishing) process of metal wiring in manufacturing semiconductor devices, comprising a peroxide, an inorganic acid, a propylenediaminetetraacetate (PDTA)-metal complex, a carboxylic acid, a metal oxide powder, and de-ionized water, wherein the PDTA-metal complex plays a major role in improving overall polishing performance and reproducibility thereof by preventing abraded tungsten oxide from readhesion onto the polished surface, as well as in improving the dispersion stability of the slurry composition.
    Type: Application
    Filed: July 1, 2004
    Publication date: December 9, 2004
    Inventors: Jae Seok Lee, Won Joong Do, Hyun Soo Roh, Kil Sung Lee, Jon Won Lee, Bo Un Yoon, Sang Rok Hah, Joon Sang Park, Chang Ki Hong
  • Patent number: 6551367
    Abstract: There is disclosed a process for preparing a metal oxide CMP slurry suitable for semiconductor devices, wherein a mixture comprising 1 to 50 weight % of a metal oxide and 50 to 99 weight % of water is mixed in a pre-mixing tank, transferred to a dispersion chamber with the aid of a transfer pump, allowed to have a flow rate of not less than 100 m/sec by pressurization with a high pressure pump, and subjected to counter collision for dispersion through two orifices in the dispersion chamber. The slurry has particles which are narrow in particle size distribution, showing an ultrafine size ranging from 30 to 500 nm. Also, the slurry is not polluted at all during its preparation and shows no tailing phenomena, so that it is preventive of &mgr;-scratching. Therefore, it can be used in the planarization for shallow trench isolation, interlayer dielectrics and inter metal dielectrics through a CMP process.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: April 22, 2003
    Assignee: Cheil Industries Inc.
    Inventors: Kil Sung Lee, Jae Seok Lee, Seok Jin Kim, Tu Won Chang
  • Patent number: 6488730
    Abstract: The present invention relates to a polishing composition comprising 30 to 99 wt % of deionized water, 0.1 to 50 wt % of powder of metallic oxide and 0.01 to 20 wt % of cyclic amine. This polishing composition can be used in a chemical mechanical polishing of thin films in integrated circuit manufacturing and has an effect of minimizing the occurrence of microscratches on the thin film after polishing. Thereby it can be applied to the manufacturing process of highly integrated circuits such as Shallow Trench Isolation.
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: December 3, 2002
    Assignee: Cheil Industries, Inc.
    Inventors: Kil Sung Lee, Jae Seok Lee, Seok Jin Kim, Young Ki Lee, Tu Won Chang
  • Patent number: 6447694
    Abstract: Disclosed is a polishing composition which comprises an Al2O3/SiO2 composite-based metal oxide powder, deionized water and an additive, said metal oxide powder comprising an Al2O3/SiO2 composite as an essential component. The polishing composition is superior in removal rate and free of causing microscratches after polishing and thus, suitable for use in the global planarization of device wafer surfaces.
    Type: Grant
    Filed: June 22, 2000
    Date of Patent: September 10, 2002
    Assignee: Cheil Industries, Inc.
    Inventors: Kil Sung Lee, Seok Jin Kim, Jae Seok Lee, Tu Won Chang
  • Patent number: 6364919
    Abstract: Disclosed is a process for preparing metal oxide slurries suitable for the chemical mechanical polishing (CMP) of semiconductor devices. A suspension of metal oxide in water is dispersed at a predetermined pressure through an orifice of a dispersion chamber while two intensifier pumps are used to maintain the pressure applied to the dispersion chamber constantly, resulting in restraining or minimizing the generation of macro particles as large as or larger than 1 &mgr;m. The metal oxide slurries are uniform in particle size with narrow particle size distribution and show excellent polishing performance with a significant reduction in the occurrence frequency of microscratches, so that they are suitable for CMP of ultra-integrated semiconductor devices.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: April 2, 2002
    Assignee: Cheil Industries, Inc.
    Inventors: Kil Sung Lee, Jae Seok Lee, Seok Jin Kim, Tu Won Chang