Patents by Inventor Woo-Sik Cho

Woo-Sik Cho 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: 7782424
    Abstract: A color filter substrate includes a color filter, a common electrode, a first blocking layer, and a second blocking layer. The color filter is formed in a unit pixel. The first blocking layer corresponds to an outline of the color filter. The second blocking layer is formed in the unit pixel, and under the color filter so to be covered by the color filter, thus decreasing a volume of the color filter. A common electrode is formed over the color filter and the first blocking layer. Thus, an amount of a color filter pigment required for manufacturing the substrate may be decreased and manufacturing cost may be decreased.
    Type: Grant
    Filed: June 18, 2007
    Date of Patent: August 24, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Sik Cho, Yoon-Jang Kim, Yun-Seok Lee
  • Patent number: 7696027
    Abstract: Disclosed is a method of fabricating a display substrate. A black matrix and a color filter layer are formed on a base substrate, and then a transparent electrode and a photoresist layer pattern are sequentially formed. The transparent electrode is patterned using the photoresist layer pattern as a mask to form a common electrode, and a spacer is formed using the photoresist layer pattern.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: April 13, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woo-Sik Cho, Yun-Seok Lee, Dong-Won Woo, Ji-Hyeon Son
  • Publication number: 20090161047
    Abstract: A color filter substrate for a liquid crystal display (LCD) includes a substrate having a non-pixel region and a pixel region, a black matrix and a light blocking color filter layered in the non-pixel region, and a color filter arranged in the pixel region. The light blocking color filter may be formed simultaneously with the color filter, and may include color filter material having light blocking properties at various wavelengths to supplement the light blocking properties of the black matrix. The light blocking color filter occupies a portion of the non-pixel region and has a thickness so that the black matrix in the non-pixel region may have a thickness that is less than a thickness of the color filter arranged in the pixel region.
    Type: Application
    Filed: October 30, 2008
    Publication date: June 25, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo-Sik Cho, Ji-Young Jeong, Ju-Hyeon Baek, Chang-Soo Han, Eung-Gyu Lee
  • Publication number: 20080070332
    Abstract: Disclosed is a method of fabricating a display substrate. A black matrix and a color filter layer are formed on a base substrate, and then a transparent electrode and a photoresist layer pattern are sequentially formed. The transparent electrode is patterned using the photoresist layer pattern as a mask to form a common electrode, and a spacer is formed using the photoresist layer pattern.
    Type: Application
    Filed: September 17, 2007
    Publication date: March 20, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo-Sik CHO, Yun-Seok LEE, Dong-Won WOO, Ji-Hyeon SON
  • Publication number: 20070291210
    Abstract: A color filter substrate includes a color filter, a common electrode, a first blocking layer, and a second blocking layer. The color filter is formed in a unit pixel. The first blocking layer corresponds to an outline of the color filter. The second blocking layer is formed in the unit pixel, and under the color filter so to be covered by the color filter, thus decreasing a volume of the color filter. A common electrode is formed over the color filter and the first blocking layer. Thus, an amount of a color filter pigment required for manufacturing the substrate may be decreased and manufacturing cost may be decreased.
    Type: Application
    Filed: June 18, 2007
    Publication date: December 20, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo-Sik CHO, Yoon-Jang KIM, Yun-Seok LEE