Patents by Inventor Seung Hee Lee

Seung Hee 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: 6646706
    Abstract: Disclosed is a fringe field switching mode liquid crystal display.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: November 11, 2003
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Kyu Hwan Lim, Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6646707
    Abstract: Disclosed is a fringe field switching mode LCD. The disclosed comprises a first and a second transparent insulating substrates arranged opposite to each other with a predetermined distance, with a liquid crystal layer including a plurality of liquid crystal molecules interposed between them; a plurality of gate bus lines and data bus lines formed on the first transparent insulating substrate and arranged in a matrix form to define a unit pixel; a thin film transistor formed at the intersection of the gate bus line and the data bus line; a counter electrode disposed in each unit pixel, made of transparent conductor; and a pixel electrode arranged in each unit pixel to generate a fringe field with the counter electrode, being insulated with the counter electrode and made of transparent conductor and including a plurality of upper slits and lower slits symmetrical each other with respect to long side of the pixel with a predetermined tilted angle.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: November 11, 2003
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Jeong Dong Noh, Seung Hee Lee, Seok Lyul Lee
  • Patent number: 6642985
    Abstract: The present invention discloses a fringe field switching mode liquid crystal display. The disclosed comprises: a lower and an upper substrates disposed opposite to each other at a predetermined distance, having transparency; a counter electrode and a pixel electrode disposed on the inner surface of the lower substrate with a gate insulating layer interposed and made of transparent conductors, forming a fringe field when a electric field is applied; a black matrix and color filter formed on the inner surface of the upper substrate; an ITO layer disposed on the inner surface of the upper substrate which has the black matrix and the color filter therein; and a liquid crystal layer interposed between the lower and the upper substrates, including a plurality of liquid crystal molecules of negative dielectric anisotropy. In the FFS mode LCD of the present invention, the counter electrode has a plate shape and the pixel electrode has a slit shape.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: November 4, 2003
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hyang Yul Kim, Seung Hee Lee, Seung Ho Hong
  • Publication number: 20030151715
    Abstract: A liquid crystal display device with spacers integrally formed at a plastic substrate. The liquid crystal display device comprises: upper and lower substrates joined with liquid crystals interposed there-between, at least one substrate of which is made of plastic; a driving electrode for the liquid crystals formed at the lower substrate; polarizers attached at respective rear surfaces of the upper and lower substrates; and spacers interposed between the upper and lower substrates to maintain cell gaps, wherein the spacers are integrally formed at the substrate, and concurrently act as posts. Also, spacers can be integrally formed at either one of the lower plastic substrate and the upper plastic substrate, or the spacers can be integrally formed at both the lower plastic substrate and the upper plastic substrate, and the spacers have a height of “cell gap±a”, wherein the cell gap is 0.2 to 10 &mgr;m and “a” is not more than 1&mgr;m.
    Type: Application
    Filed: December 30, 2002
    Publication date: August 14, 2003
    Inventors: Hyang Yul Kim, Jin Mahn Kim, Seung Hee Lee
  • Patent number: 6603526
    Abstract: The present invention is directed to provide a liquid crystal display having an improved picture quality, high transmittance and high aperture ratio.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: August 5, 2003
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6600542
    Abstract: The present invention is directed to provide a liquid crystal display having an improved picture quality, high transmittance and high aperture ratio.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: July 29, 2003
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Publication number: 20030123018
    Abstract: The present invention relates to a method for forming post spacers in a liquid crystal display, which enables cell gap to be uniform by means of a half-tone mask. The method comprises the steps of: defining a active region and a dummy region in a substrate; forming a black matrix on the substrate at the outside of the active region; selectively forming a RGB resin film on the active region while selectively forming a RGB resin film on the dummy region; forming a protective film on the resulting structure; forming a photosensitive resin film on the protective film; forming a half-tone mask pattern on the photosensitive resin film; and selectively etching the photosensitive resin film using the half-tone mask pattern so as to form the post spacers having a different height.
    Type: Application
    Filed: December 20, 2002
    Publication date: July 3, 2003
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Publication number: 20030123019
    Abstract: A liquid crystal display device with plastic substrates is disclosed, which comprises: a subsidiary substrate, upper and lower plastic substrates including edge grooves and being fixed on the subsidiary substrate by heat resistant tapes and being joined with liquid crystals sealed there-between, and alignment layers formed on the surfaces which face one another of the upper and lower plastic substrates.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 3, 2003
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Publication number: 20030117558
    Abstract: The present invention provides a Fringe Field Switching-Liquid Crystal Display comprising: an upper substrate and a lower substrate; a gate line and a data line for defining a unit pixel, a plurality of protrusion parts being respectively formed on an edge region of the gate line adjacent to a pixel electrode, each of protrusion parts of the gate line being positioned in a depression part formed between the protrusion parts of the pixel electrode; a counter electrode formed in the unit pixel; a common line for applying a common signal to the counter electrode; a pixel electrode forming an electric field with the counter electrode, a plurality of protrusion parts being formed on an edge region of the pixel electrode adjacent to the gate line, each of protrusion parts being positioned in a depression part formed between the protrusion parts of the gate line; and a liquid crystal filled between the upper substrate and the lower substrate.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 26, 2003
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6583842
    Abstract: A reflective type fringe field switching mode liquid crystal display device having improved contrast is provided. The device has a lower and an upper substrates arranged with a distance and having a unit pixel defined therein. Between the substrates, a liquid crystal layer having a plurality of liquid crystal molecules are interposed. A counter electrode is formed on an inner surface of the lower substrate in the unit pixel. A pixel electrode is formed above the counter electrode. The pixel electrode and the counter electrode generate a fringe field for driving the liquid crystal molecules in the unit pixel. A horizontal alignment layer having a rubbing axis is interposed between the lower substrate and the liquid crystal layer, and a vertical alignment layer is interposed between the upper substrate and the liquid crystal layer. In addition, a polarizer is disposed on an outer surface of the upper substrate and having a polarizing axis.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: June 24, 2003
    Assignee: Boe-Hydis Technology Co., Ltd.
    Inventors: Seung Ho Hong, Youn Hak Jeong, Jin Mahn Kim, Seung Hee Lee
  • Publication number: 20030107689
    Abstract: The present invention provides a liquid crystal display having improved contrast ratio. The present invention comprises: an upper and a lower glass substrates as a display, combined with a liquid crystal layer interposed therebetween; a liquid crystal panel comprising an upper and a lower polarizing plates arranged on the outside of the upper and the lower glass substrates; a lamp arranged on the lower part of the liquid crystal panel as a light source; a light guiding plate arranged on one side of the lamp; and a backlight unit comprising an optical film arranged on the upper part of the light guiding plate, wherein the upper polarizing plate has an Anti-Glare layer comprising dispersing particles.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 12, 2003
    Inventors: Chi Hyuck Park, Sung Hun Song, Seung Hee Lee
  • Publication number: 20030043330
    Abstract: Disclosed is a LCD comprising a substrate; a signal applying unit having a gate line and a common line on the substrate; and a display unit forming a plurality of pixels with a data line, a counter electrode, a pixel electrode, a TFT and the gate line and the common line extended from the signal applying unit, wherein the pixel electrode comprises a body unit and a branch unit, the body unit being parallel to the gate line and the branch unit comprising a plurality of branches being parallel to the data line, and pixel electrode of the outmost pixel that is the most adjacent to the signal applying unit has some of branches formed on the signal applying unit.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 6, 2003
    Inventors: Sung Woon Kim, Jin Mahn Kim, Seung Hee Lee
  • Publication number: 20030035079
    Abstract: The present invention is directed to provide a liquid crystal display having an improved picture quality, high transmittance and high aperture ratio.
    Type: Application
    Filed: August 6, 2002
    Publication date: February 20, 2003
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Patent number: 6522380
    Abstract: Disclosed is a liquid crystal display comprising: a first substrate and a second substrate, the first substrate being disposed opposite the second substrate and being disposed a first distance apart, each of the substrates having an inner surface and an outer surface opposite the inner surface; a liquid crystal layer sandwiched between the inner surfaces of the substrates, the liquid crystal layer including a plurality of liquid crystal molecules; a first electrode formed on the inner surface of the first substrate, the first electrode having a first width; and a second electrode formed on the inner surface of the first substrate, the second electrode having a second width, and spaced apart from the first electrode by a second distance, the first electrode and the second electrode being capable of aligning the liquid crystal molecules using an electric field produced between the first electrode and the second electrode, wherein the first distance is greater in length than the second distance, and the first an
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: February 18, 2003
    Assignee: Hyundai Display Technology Inc.
    Inventors: Seung Hee Lee, Seok Lyul Lee, Woo Ho Choi, Jung Yeal Lee
  • Patent number: 6512503
    Abstract: The invention discloses a liquid crystal display capable of preventing color shift and also improving response time characteristics.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: January 28, 2003
    Assignee: Hyundai Display Technology Inc.
    Inventors: Hyang Yul Kim, Seung Hee Lee, Won Geon Lee
  • Patent number: 6512565
    Abstract: The present invention provide a homeotropic alignment liquid crystal display having a multi-domain which is capable of obtaining symmetrical viewing angles and simultaneously preventing color shift. An upper substrate and a lower substrate are opposed each other to be spaced apart and a liquid crystal layer interposed between inner surfaces of the upper and lower substrates. A first electrode and a second electrode are formed on the inner surface of the lower substrate, wherein the first electrode and the second electrode form an electric field for driving liquid crystal molecules. Further, homeotropic alignment layers are interposed between the lower substrate and the liquid crystal layer and between the upper substrate and the liquid crystal layer respectively.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: January 28, 2003
    Assignee: Hyundai Display Technology Inc.
    Inventors: Seung Hee Lee, Yun Hee Lee, In Cheol Park
  • 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: 20030001999
    Abstract: Disclosed are a sealing structure and a sealing method of liquid crystal display having improved adhesive strength of sealant. The disclosed has a sealing structure that a predetermined patterns are formed on opposite sides and on the top portion thereof, transparent lower and upper substrates, whereon alignment layer is applied to control the initial arrangement of liquid crystal molecules, are sealed by sealant with a predetermined distance, wherein a dummy strengthening pattern is formed on the substrate region in contact with the sealant to increase adhesive strength of the sealant.
    Type: Application
    Filed: June 11, 2002
    Publication date: January 2, 2003
    Inventors: Jin Mahn Kim, Seung Hee Lee
  • Publication number: 20020191139
    Abstract: The present invention is directed to provide a liquid crystal display having an improved picture quality, high transmittance and high aperture ratio.
    Type: Application
    Filed: August 6, 2002
    Publication date: December 19, 2002
    Inventors: Hyang Yul Kim, Seung Hee Lee
  • Publication number: 20020180920
    Abstract: The present invention comprises an upper substrate; a data bus line and a storage capacitance bus line on a lower substrate; a gate bus line at the position of bisecting the unit pixel; a thin film transistor on the gate bus line; a counter electrode; and a pixel electrode. The pixel electrode comprises a frame shaped body unit formed on the edge in counter electrode and a plurality of slant slits arranged with a regular distance to divide the body unit into several parts, forming a predetermined angle with the gate bus line. The angle of slant slits in the pixel electrode is symmetric with respect to the gate bus line. The storage capacitance bus line is partially overlapped with both the upper edge of pixel electrode in one unit pixel and the lower edge of pixel electrode in the closest unit pixel. According to the present invention, the black matrix area is reduced by eliminating or minimizing the light leakage through modifying the pixel structure, thereby improving the aperture ration and transmittance.
    Type: Application
    Filed: May 29, 2002
    Publication date: December 5, 2002
    Inventors: Jeong Dong Noh, Seung Hee Lee