Patents by Inventor Yong-Woo Choi

Yong-Woo 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).

  • Patent number: 7525621
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: April 28, 2009
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Publication number: 20090071539
    Abstract: Disclosed are a solar cell manufactured using a composite thin film comprising amorphous silicon and nanocrystalline silicon, a method of manufacturing the solar cell, and a composition for the composite thin film used in manufacturing the solar cell. More particularly, a silicon semiconductor layer in the solar cell is fabricated by using the composite thin film comprising the amorphous silicon and the nanocrystalline silicon, the composite thin film being formed by dispersing nanoparticles of the crystalline silicon in a liquid silicon precursor and modifying them. The solar cell of the present invention is manufactured by dispersing the crystalline silicon nanoparticles in the liquid silicon precursor, coating the dispersion on a substrate or printing the substrate with the dispersion, and heating the coated or printed substrate to modify the liquid silicon precursor into the amorphous silicon.
    Type: Application
    Filed: February 29, 2008
    Publication date: March 19, 2009
    Inventors: Yong Woo Choi, Young Ho Choe, Hyung Seok Kim, Young Hee Lee
  • Patent number: 7486364
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: February 3, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Publication number: 20080284964
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Application
    Filed: June 23, 2008
    Publication date: November 20, 2008
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Patent number: 7408187
    Abstract: A transistor device includes a transparent substrate. A high K dielectric is formed on the transparent substrate and transferred onto a flexible substrate. An organic transistor is formed on the high K dielectric.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: August 5, 2008
    Assignee: Massachusetts Institute of Technology
    Inventors: Il-Doo Kim, Yong Woo Choi, Harry L. Tuller
  • Publication number: 20070263163
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Application
    Filed: May 10, 2007
    Publication date: November 15, 2007
    Inventors: Joon-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Patent number: 7154575
    Abstract: In a method of fabricating a thin film transistor array substrate, a black matrix with horizontal and vertical portions is first formed on a substrate with an opaque conductive material. A gate line assembly is formed on the black matrix, and buffer layers are formed between the separate portions of the black matrix. A gate insulating layer, a semiconductor layer, and an ohmic contact layer are sequentially deposited onto the substrate. And a data line assembly is formed on the ohmic contact layer. The ohmic contact layer exposed through the data line assembly is etched, and a protective layer is deposited onto the substrate. The protective layer, the gate insulating layer, and the semiconductor layer are patterned to form contact holes and opening portions exposing the insulating layer at pixel areas. The peripheral portions of the black matrix are also exposed through the opening portions.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: December 26, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Kun Song, Yong-Woo Choi
  • Publication number: 20060215081
    Abstract: A thin film transistor array substrate is provided with a gate line assembly, a data line assembly, and thin film transistors. The data line assembly crosses over the gate line assembly while defining pixel regions. A pixel electrode is formed at each pixel region. A color filter substrate is provided with a black matrix, and color filters of red, green and blue are formed at the black matrix at the pixel regions. An overcoat layer covers the color filters, and a common electrode is formed on the overcoat layer with an opening pattern. The thin film transistor array substrate, and the color filter substrates face each other, and a liquid crystal material is injected between the thin film transistor array substrate, and the color filter substrate. The blue color filter has a thickness smaller than the red color filter or the green color filter such that the liquid crystal cell gap at the blue color filter is larger than the liquid crystal cell gap at the red or green color filter.
    Type: Application
    Filed: May 31, 2006
    Publication date: September 28, 2006
    Inventors: Jang-Kun Song, Kyeong-Hyeon Kim, Jae-Jin Lyu, Seung-Hee Lee, Seung-Beom Park, Yong-Woo Choi
  • Publication number: 20060209245
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Application
    Filed: December 22, 2005
    Publication date: September 21, 2006
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Publication number: 20060158600
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Application
    Filed: November 30, 2005
    Publication date: July 20, 2006
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Patent number: 7075600
    Abstract: A thin film transistor array substrate is provided with a gate line assembly, a data line assembly, and thin film transistors. The data line assembly crosses over the gate line assembly while defining pixel regions. A pixel electrode is formed at each pixel region. A color filter substrate is provided with a black matrix, and color filters of red, green and blue are formed at the black matrix at the pixel regions. An overcoat layer covers the color filters, and a common electrode is formed on the overcoat layer with an opening pattern. The thin film transistor array substrate, and the color filter substrates face each other, and a liquid crystal material is injected between the thin film transistor array substrate, and the color filter substrate. The blue color filter has a thickness larger than the red color filter or the green color filter such that the liquid crystal cell gap at the blue color filter is smaller than the liquid crystal cell gap at the red or green color filter.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: July 11, 2006
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Jang-Kun Song, Kyeong-Hyeon Kim, Jae-Jin Lyu, Seung-Hee Lee, Seung-Beom Park, Yong-Woo Choi
  • Patent number: 7057695
    Abstract: A liquid crystal display includes the first and second substrates. The first substrate has a first insulating substrate. A pixel electrode is formed on the first insulating substrate. The second substrate has a second insulating substrate. A common electrode is formed on the second insulating substrate. The first and second protrusions having different thicknesses are formed on the common electrode. A liquid crystal material is injected between the first and the second substrates.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: June 6, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Publication number: 20050030442
    Abstract: In a method of fabricating a thin film transistor array substrate, a black matrix with horizontal and vertical portions is first formed on a substrate with an opaque conductive material. A gate line assembly is formed on the black matrix, and buffer layers are formed between the separate portions of the black matrix. A gate insulating layer, a semiconductor layer, and an ohmic contact layer are sequentially deposited onto the substrate. And a data line assembly is formed on the ohmic contact layer. The ohmic contact layer exposed through the data line assembly is etched, and a protective layer is deposited onto the substrate. The protective layer, the gate insulating layer, and the semiconductor layer are patterned to form contact holes and opening portions exposing the insulating layer at pixel areas. The peripheral portions of the black matrix are also exposed through the opening portions.
    Type: Application
    Filed: September 14, 2004
    Publication date: February 10, 2005
    Inventors: Jang-Kun Song, Yong-Woo Choi
  • Publication number: 20040165122
    Abstract: In a method of fabricating a thin film transistor array substrate, a black matrix with horizontal and vertical portions is first formed on a substrate with an opaque conductive material. A gate line assembly is formed on the black matrix, and buffer layers are formed between the separate portions of the black matrix. A gate insulating layer, a semiconductor layer, and an ohmic contact layer are sequentially deposited onto the substrate. And a data line assembly is formed on the ohmic contact layer. The ohmic contact layer exposed through the data line assembly is etched, and a protective layer is deposited onto the substrate. The protective layer, the gate insulating layer, and the semiconductor layer are patterned to form contact holes and opening portions exposing the insulating layer at pixel areas. The peripheral portions of the black matrix are also exposed through the opening portions.
    Type: Application
    Filed: February 24, 2004
    Publication date: August 26, 2004
    Inventors: Jang-Kun Song, Yong-Woo Choi
  • Patent number: 6781651
    Abstract: In a method of fabricating a thin film transistor array substrate, a black matrix having separated portions is first formed on a substrate with an opaque conductive material. An insulation layer is formed to cover the black matrix. A gate line assembly and a data line assembly are formed over the black matrix and insulation layer. Buffer layers are formed to cover the gaps between the separate portions of the black matrix. The buffer conductive layers are formed at the same plane as the gate line assembly or data line assembly.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: August 24, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang-Kun Song, Yong-Woo Choi
  • Publication number: 20030011729
    Abstract: A thin film transistor array substrate is provided with a gate line assembly, a data line assembly, and thin film transistors. The data line assembly crosses over the gate line assembly while defining pixel regions. A pixel electrode is formed at each pixel region. A color filter substrate is provided with a black matrix, and color filters of red, green and blue are formed at the black matrix at the pixel regions. An overcoat layer covers the color filters, and a common electrode is formed on the overcoat layer with an opening pattern. The thin film transistor array substrate, and the color filter substrates face each other, and a liquid crystal material is injected between the thin film transistor array substrate, and the color filter substrate. The blue color filter has a thickness smaller than the red color filter or the green color filter such that the liquid crystal cell gap at the blue color filter is larger than the liquid crystal cell gap at the red or green color filter.
    Type: Application
    Filed: December 28, 2001
    Publication date: January 16, 2003
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jang-Kun Song, Kyeong-Hyeon Kim, Jae-Jin Lyu, Seung-Hee Lee, Seung-Beom Park, Yong-Woo Choi
  • Publication number: 20020033927
    Abstract: A liquid crystal display includes first and second substrates. The first substrate has a first insulating substrate, and a pixel electrode formed on the first insulating substrate with a first opening pattern. The second substrate has a second insulating substrate, and a common electrode formed on the second insulating substrate with a second opening pattern. The first and the second opening patterns proceed parallel to each other while being arranged in an alternate manner. A liquid crystal material is injected between the first and the second substrates. A spacer is positioned at an end of the second opening pattern to maintain the distance between the first and the second substrates.
    Type: Application
    Filed: August 14, 2001
    Publication date: March 21, 2002
    Inventors: Joong-Hyun Mun, Jang-Kun Song, Yong-Woo Choi, Bo-Sung Kim, Kwan-Wook Jung, Jung-Ho Lee, Hyo-Rak Nam
  • Publication number: 20020008798
    Abstract: In a method of fabricating a thin film transistor array substrate, a black matrix with horizontal and vertical portions is first formed on a substrate with an opaque conductive material. A gate line assembly is formed on the black matrix, and buffer layers are formed between the separate portions of the black matrix. A gate insulating layer, a semiconductor layer, and an ohmic contact layer are sequentially deposited onto the substrate. And a data line assembly is formed on the ohmic contact layer. The ohmic contact layer exposed through the data line assembly is etched, and a protective layer is deposited onto the substrate. The protective layer, the gate insulating layer, and the semiconductor layer are patterned to form contact holes and opening portions exposing the insulating layer at pixel areas. The peripheral portions of the black matrix are also exposed through the opening portions.
    Type: Application
    Filed: May 14, 2001
    Publication date: January 24, 2002
    Inventors: Jang-Kun Song, Yong-Woo Choi