Patents by Inventor Young Seok Choi

Young Seok 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: 7646018
    Abstract: A TFT array substrate includes: a gate electrode connected to a gate line; a source electrode connected to a data line crossing the gate line to define a pixel region; a drain electrode which is opposite to the source electrode with a channel in between; a semiconductor layer defining the channel between the source electrode and the drain electrode; a pixel electrode in the pixel region and connected to the drain electrode; a channel passivation layer on the channel of the semiconductor layer; a gate pad extending from the gate line, where a semiconductor pattern and a transparent conductive pattern are formed; a data pad connected to the data line, where the transparent conductive pattern is formed; and a gate insulating layer formed under the semiconductor layer, the gate line and the gate pad, and the data line and the data pad.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: January 12, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Young Seok Choi, Hong Woo Yu, Ki Sul Cho, Jae Ow Lee, Bo Kyoung Jung
  • Publication number: 20100001278
    Abstract: A thin film transistor array substrate and a fabricating method thereof are disclosed. The thin film transistor array substrate protects a thin film transistor without a protective film and accordingly reduces the manufacturing cost. In the thin film transistor array substrate, a gate electrode is connected to a gate line. A source electrode is connected to a data line crossing the gate line to define a pixel area. A drain electrode is opposed to the source electrode with a channel therebetween. A semiconductor layer is in the channel. A pixel electrode in the pixel area contacts the drain electrode over substantially the entire overlapping area between the two. A channel protective film is provided on the semiconductor layer corresponding to the channel to protect the semiconductor layer.
    Type: Application
    Filed: August 14, 2009
    Publication date: January 7, 2010
    Applicant: LG Display Co., Ltd.
    Inventors: Young Seok Choi, Byung Yong Ahn, Ki Sul Cho, Hong Woo Yu
  • Publication number: 20090289655
    Abstract: A process condition evaluation method for a liquid crystal display module (LCM) includes: a first step of obtaining a threshold power measuring pattern, an analysis sample for a cell bonding status in an LCD fabrication process, and obtaining a lower substrate sample by separating an upper substrate from the threshold power measuring pattern; a second step of supplying voltages on a gate pad on the lower substrate sample with sequentially increasing a voltage level by a predetermined unit by using an electrical device, and obtaining a threshold current and a threshold voltage by measuring currents at a drain pad whenever voltage increased by a predetermined unit is applied to the gate pad; and a third step of obtaining threshold power based on the threshold current and the threshold voltage, and thereby evaluating process conditions of the LCM.
    Type: Application
    Filed: December 15, 2008
    Publication date: November 26, 2009
    Inventors: Jeong-Yeop Lee, Hoon Choi, Young-Seok Choi, Kwang-Sik Oh
  • Patent number: 7608211
    Abstract: The liquid crystal display device of the present invention comprises first and second substrates; a first alignment layer on the first substrate, wherein the first alignment layer includes (spacer S is oxygen, m=10˜10,000), the functional group R includes photo-sensitive constituents and/or non-photo-sensitive constituents, the photo-sensitive constituent includes a material selected from the group consisting of cinnamoyl derivatives, the non-photo-sensitive constituent includes a material selected from the group consisting of CnH2n, CnH2n+1, CnH2nOH, COCnH2n+1, COCnH2n, CnH2n+1?xFx, CnH2n?(x?1)F(x?1), CnH2n?xFxOH, COCnH2n+1?xFx (n=1˜10, x=1˜2n+1), and a combination thereof; and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: October 27, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Mi Sook Nam, Young Seok Choi
  • Patent number: 7589030
    Abstract: A method of fabricating a liquid crystal display device includes performing a first mask process to form a gate line, a gate pad, and a gate electrode on a substrate. The method of fabricating a liquid crystal display device further includes performing a second mask process to form an active layer on the gate electrode, performing a third mask process to form a pixel electrode contacting the active layer, and performing a fourth mask process to form a source electrode and a drain electrode on the active layer.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: September 15, 2009
    Assignee: LG. Display Co., Ltd.
    Inventors: Ki Sul Cho, Young Seok Choi, Byung Yong Ahn, Tae Ung Hwang, Dong Jun Min, Bo Kyoung Jung
  • Patent number: 7586123
    Abstract: A thin film transistor array substrate and a fabricating method thereof are disclosed. The thin film transistor array substrate protects a thin film transistor without a protective film and accordingly reduces the manufacturing cost. In the thin film transistor array substrate, a gate electrode is connected to a gate line. A source electrode is connected to a data line crossing the gate line to define a pixel area. A drain electrode is opposed to the source electrode with a channel therebetween. A semiconductor layer is in the channel. A pixel electrode in the pixel area contacts the drain electrode over substantially the entire overlapping area between the two. A channel protective film is provided on-the semiconductor layer corresponding to the channel to protect the semiconductor layer.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: September 8, 2009
    Assignee: LG. Display Co., Ltd.
    Inventors: Young Seok Choi, Byung Yong Ahn, Ki Sul Cho, Hong Woo Yu
  • Publication number: 20090159895
    Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming a gate line, a gate pad, a gate electrode, and a data pad on a substrate through a first mask process, forming a gate insulating layer on a substantial part of an entire surface of the substrate including the gate line, the gate pad, the gate electrode, and the data pad, forming a data line, a source-drain pattern and an active layer on the gate insulating layer and forming a gate pad contact hole and a data pad contact hole in the gate insulating layer through a second mask process, and forming a pixel electrode, a gate pad terminal, a data pad terminal, a source electrode, a drain electrode, and an ohmic contact layer through a third mask process.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 25, 2009
    Inventors: Ki-Sul Cho, Young-Seok Choi, Byung-Yong Ahn, Tae-Ung Hwang, Dong-Jun Min, Bo-Kyoung Jung
  • Publication number: 20090136665
    Abstract: A reactor configured to subject a substrate to alternately repeated surface reactions of vapor-phase reactants is disclosed. In one embodiment, the reactor includes a reaction chamber that defines a reaction space; one or more inlets; an exhaust outlet; a gas flow control guide structure; and a substrate holder. The gas flow control guide includes one or more channels, each of which extends from a respective one of the one or more inlets to a first portion of a periphery of the reaction space. Each of the channels widens as the channel extends from the inlet to the reaction space. At least one of the channels is configured to generate a non-uniform laminar flow at the first portion of the periphery of the reaction space such that the laminar flow includes a plurality of flow paths that provide different amounts of a fluid.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 28, 2009
    Applicant: ASM GENITECH KOREA LTD.
    Inventors: Seung Woo Choi, Gwang Lae Park, Chun Soo Lee, Jeong Ho Lee, Young Seok Choi
  • Patent number: 7488057
    Abstract: Disclosed is a piezoelectric ink jet printer head in which a chamber and an ink storage are integrally formed. A process for manufacturing the ink jet printer head is also disclosed.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: February 10, 2009
    Assignees: Piezonics Co., Ltd., Korea Institute of Industrial Technology
    Inventors: Young June Cho, Chul Soo Byun, Moon Soo Park, Kyung Tae Kang, Young Seok Choi, Il Yong Chung, Jaichan Lee
  • Patent number: 7479419
    Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming a gate line, a gate pad, a gate electrode, and a data pad on a substrate through a first mask process, forming a gate insulating layer on a substantial part of an entire surface of the substrate including the gate line, the gate pad, the gate electrode, and the data pad, forming a data line, a source-drain pattern and an active layer on the gate insulating layer and forming a gate pad contact hole and a data pad contact hole in the gate insulating layer through a second mask process, and forming a pixel electrode, a gate pad terminal, a data pad terminal, a source electrode, a drain electrode, and an ohmic contact layer through a third mask process.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: January 20, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Ki-Sul Cho, Young-Seok Choi, Byung-Yong Ahn, Tae-Ung Hwang, Dong-Jun Min, Bo-Kyoung Jung
  • Publication number: 20090015780
    Abstract: A liquid crystal display device includes first and second substrates facing each other; gate lines and data lines formed on the first substrate such that the gate lines and the data lines intersect each other to define pixel regions; thin film transistors formed at respective intersections of the gate lines and the data lines; a black matrix layer formed on the second substrate such that the black matrix layer corresponds to a region other than the pixel regions; color filter layers extending in an extension direction of the data lines in respective pixel regions; a liquid crystal layer interposed between the first and second substrates; first column spacers formed on one of the first and second substrates such that each first column spacer corresponds to an associated one of the gate lines or to a channel region of an associated one of the thin film transistors to maintain a cell gap between the first-and second substrate; and spacer patterns formed on one of the first and second substrates such that each sp
    Type: Application
    Filed: December 28, 2007
    Publication date: January 15, 2009
    Inventors: Young Seok Choi, Yu Ho Jung, Sang Yong Lee
  • Publication number: 20070153198
    Abstract: Provided is an array substrate for an IPS-mode LCD device and method of fabricating the same that prevents a problem referred to as wavy noise. The IPS-mode LCD device and method have a shorter processing time and low error rate without an increase in fabrication and production costs.
    Type: Application
    Filed: December 15, 2006
    Publication date: July 5, 2007
    Inventors: Ki-sul Cho, Young-Seok Choi, Byung-Yong Ahn, Tae-Ung Hwang, Dong-Jun Min, Bo-Kyoung Jung
  • Publication number: 20060262244
    Abstract: A method of manufacturing an array substrate for a liquid crystal display device includes forming a gate line, a gate pad, a gate electrode, and a data pad on a substrate through a first mask process, forming a gate insulating layer on a substantial part of an entire surface of the substrate including the gate line, the gate pad, the gate electrode, and the data pad, forming a data line, a source-drain pattern and an active layer on the gate insulating layer and forming a gate pad contact hole and a data pad contact hole in the gate insulating layer through a second mask process, and forming a pixel electrode, a gate pad terminal, a data pad terminal, a source electrode, a drain electrode, and an ohmic contact layer through a third mask process.
    Type: Application
    Filed: December 16, 2005
    Publication date: November 23, 2006
    Inventors: Ki-Sul Cho, Young-Seok Choi, Byung-Yong Ahn, Tae-Ung Hwang, Dong-Jun Min, Bo-Kyoung Jung
  • Patent number: 7133112
    Abstract: A method of manufacturing a liquid crystal display device includes the steps of: providing a first substrate and a second substrate; forming a first alignment film on the first substrate; irradiating light to the first alignment film to obtain an acute angle of 0° or greater between an alignment direction of the first alignment film and a director of a liquid crystal molecule adjacent to the first alignment film; and forming a liquid crystal between the first substrate and the second substrate.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: November 7, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Young Seok Choi, Ji Young Ahn
  • Patent number: 7061679
    Abstract: A light irradiating device for a photo-alignment process comprises an optical system and a first polarizer polarizing the light from the optical system. The light from the first polarizer is obliquely irradiated at an angle with respect to a normal direction of a stage on which a substrate is placed.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: June 13, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ki Hyuk Yoon, Young Seok Choi, Byung Duck Song, Soon Bum Kwon
  • Patent number: 7018687
    Abstract: The liquid crystal display device of the present invention comprises first and second substrates, a first alignment layer on the first substrate, wherein the first alignment layer includes polyethyleneimine, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: March 28, 2006
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Su Hyun Park, Young Seok Choi
  • Patent number: 7014892
    Abstract: The liquid crystal display device of the present invention comprises first and second substrates; a first alignment layer on the first substrate, wherein the first alignment layer includes (spacer S is oxygen, m=10˜10,000), the functional group R includes photo-sensitive constituents and/or non-photo-sensitive constituents, the photo-sensitive constituent includes a material selected from the group consisting of cinnamoyl derivatives, the non-photo-sensitive constituent includes a material selected from the group consisting of CnH2n, CnH2n+1, CnH2nOH, COCnH2n+1, COCnH2n, CnH2n+1?xFx, CnH2n?(x?1)F(x?1), CnH2n?xFxOH, COCnH2n+1?xFx (n=1˜10, x=1˜2n+1), and a combination thereof; and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: May 17, 2004
    Date of Patent: March 21, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Mi Sook Nam, Young Seok Choi
  • Patent number: 6817208
    Abstract: The present invention relates to an auxiliary storage system for a refrigerator.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: November 16, 2004
    Assignee: LG Electronics Inc.
    Inventors: Young-Seok Choi, Byeong-Gyu Kang, Sang-Bae Kim
  • Publication number: 20040213924
    Abstract: The liquid crystal display device of the present invention comprises first and second substrates; a first alignment layer on the first substrate, wherein the first alignment layer includes 1
    Type: Application
    Filed: May 17, 2004
    Publication date: October 28, 2004
    Inventors: Mi Sook Nam, Young Seok Choi
  • Patent number: 6787292
    Abstract: A method of manufacturing a multi-domain liquid crystal display device having a pixel includes the steps of forming an alignment film on at least one of a first and second substrate; covering the alignment film with a mask, there being included a first surface having a plurality of light-transmitting portion and light-shielding portions and a second surface having light-shielding portions corresponding to the light-transmitting portions; radiating light from an upper portion of the mask; and assembling the first and second substrates.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: September 7, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Young Seok Choi