Patents by Inventor Ho-Kyu Lee

Ho-Kyu 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).

  • Patent number: 8120520
    Abstract: A successive approximation analog/digital converter includes a sample & hold part sampling and holding an intensity of an analog input signal using a single clock cycle of a clock signal; a first comparator comparing the intensity of the analog input signal with comparison voltages determined according to estimated digital values per clock cycle following an operating clock cycle of the sample & hold part; a second comparator comparing the intensity of the analog input signal with a value equal to ½ of a preset reference voltage in the latter half of the operating clock cycle of the sample & hold part; a successive approximation register determining a value of an MSB of a digital value to be converted according to the comparison result of the second comparator and values of bits successive to the MSB according to the comparison result of the first comparator, and generating the estimated digital values by applying estimated values to undetermined bits; and a digital/analog converter generating the
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: February 21, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chan Yong Jeong, Chul Woo Kim, Ho Kyu Lee, Chul Gyun Park
  • Publication number: 20110102219
    Abstract: A successive approximation analog/digital converter includes a sample & hold part sampling and holding an intensity of an analog input signal using a single clock cycle of a clock signal; a first comparator comparing the intensity of the analog input signal with comparison voltages determined according to estimated digital values per clock cycle following an operating clock cycle of the sample & hold part; a second comparator comparing the intensity of the analog input signal with a value equal to ½ of a preset reference voltage in the latter half of the operating clock cycle of the sample & hold part; a successive approximation register determining a value of an MSB of a digital value to be converted according to the comparison result of the second comparator and values of bits successive to the MSB according to the comparison result of the first comparator, and generating the estimated digital values by applying estimated values to undetermined bits; and a digital/analog converter generating the
    Type: Application
    Filed: March 8, 2010
    Publication date: May 5, 2011
    Applicants: Samsung Electro-Mechanics Co., Ltd., KOREA UNIVERSITY INDUSTRIAL & ACADEMIC COLLABORATION FOUNDATION
    Inventors: Chan Yong Jeong, Chul Woo Kim, Ho Kyu Lee, Chul Gyun Park
  • Patent number: 7393474
    Abstract: A conductive coating composition and a method for producing coating layer using the same are disclosed. The conductive coating composition is capable of forming an antistatic coating layer on the protective film surface of display device. The conductive coating composition includes: 1 to 30 wt % of polyethylene dioxythiophene aqueous-dispersed solution; 5 to 15 wt % of water-soluble binder resin; 0.2 to 10 wt % of melamine resin; 6 to 40 wt % of alcohol solvent; 5 to 30 wt % of organic solvent selected from the group consisting of dimethyl sulfoxide, propyleneglycol methylether, N-methylpyrrolidone, ethyl-3-ethoxypropionate, propyleneglycol monomethyletheracetate, butylcarbitol and the mixtures thereof; and 10 to 50 wt % of water. The method for producing the conductive coating layer includes the steps of coating the conductive coating composition on a substrate; and drying the coating composition.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: July 1, 2008
    Assignee: Dongjin Semichem Co., Ltd.
    Inventors: Jong-Dai Park, Jong-Chul Shin, Ho-Kyu Lee
  • Publication number: 20070257235
    Abstract: A conductive coating composition and a method for producing coating layer using the same are disclosed. The conductive coating composition is capable of forming an antistatic coating layer on the protective film surface of display device. The conductive coating composition includes: 1 to 30 wt % of polyethylene dioxythiophene aqueous-dispersed solution; 5 to 15 wt % of water-soluble binder resin; 0.2 to 10 wt % of melamine resin; 6 to 40 wt % of alcohol solvent; 5 to 30 wt % of organic solvent selected from the group consisting of dimethyl sulfoxide, propyleneglycol methylether, N-methylpyrrolidone, ethyl-3-ethoxypropionate, propyleneglycol monomethyletheracetate, butylcarbitol and the mixtures thereof; and 10 to 50 wt % of water. The method for producing the conductive coating layer includes the steps of coating the conductive coating composition on a substrate; and drying the coating composition.
    Type: Application
    Filed: March 8, 2007
    Publication date: November 8, 2007
    Inventors: Jong-Dai Park, Jong-Chul Shin, Ho-Kyu Lee