Patents by Inventor Yun Bok Lee

Yun Bok 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: 7110079
    Abstract: A liquid crystal display device includes gate and data lines on a first substrate and crossing each other to define a pixel region, a thin film transistor at a crossing of the gate and data lines, a pixel electrode connected to the thin film transistor and having a circular band shape, a common line on a second substrate spaced apart from and facing the first substrate, and a common electrode extending from the common line and having a circular band shape.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: September 19, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Yun Bok Lee
  • Publication number: 20060181664
    Abstract: The present invention discloses an array substrate for an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides an array substrate having divided common electrode or pixel electrode or both. In another aspect, to form the multi-domain, the present invention provides an array substrate having multi-bar shaped common and pixel electrodes. Each of the common and pixel electrodes has a transverse portion and a perpendicular portion. The transverse portions of the common and pixel electrodes induce a first domain, whereas the perpendicular potions of the common and pixel electrodes induce a second domain.
    Type: Application
    Filed: April 7, 2006
    Publication date: August 17, 2006
    Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Yun-Bok Lee
  • Patent number: 7057696
    Abstract: The present invention discloses an array substrate for an IPS-LCD device. The IPS-LCD device according to the present invention implements a multi-domain for a liquid crystal layer. The liquid crystal molecules are aligned in various directions with respect to each different domain. Therefore, the different domains compensate for one another such that a color shift is prevented in spite of wide viewing angles. To form the multi-domain, the present invention provides an array substrate having divided common electrode or pixel electrode or both. In another aspect, to form the multi-domain, the present invention provides an array substrate having multi-bar shaped common and pixel electrodes. Each of the common and pixel electrodes has a transverse portion and a perpendicular portion. The transverse portions of the common and pixel electrodes induce a first domain, whereas the perpendicular potions of the common and pixel electrodes induce a second domain.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: June 6, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jang-Jin Yoo, Hyung-Ki Hong, Yun-Bok Lee
  • Publication number: 20060098150
    Abstract: An array substrate for use in an in-plane switching liquid crystal display device includes a plurality of gate lines having a first direction on a substrate; a plurality of data lines having a second direction substantially perpendicular to the plurality of gate lines, wherein pairs of the gate and data lines define a pixel region; a common line in the first direction between the plurality of gate lines; a plurality of common electrodes extending from the common line in the pixel region, wherein the common electrodes have an arc shape; thin film transistors disposed at four corners of the pixel region near crossings of the gate and data lines; a capacitor electrode above a portion of the common electrodes, wherein the capacitor electrode is connected to a corresponding thin film transistor; and a plurality of pixel electrodes connected to the capacitor electrode and disposed between the arc shape of the common electrodes, wherein the pixel electrodes are arc shaped, wherein the pixel region is divided into a
    Type: Application
    Filed: December 15, 2005
    Publication date: May 11, 2006
    Inventors: Yun-Bok Lee, Jeong-Hyun Kim
  • Patent number: 7009672
    Abstract: A multi-domain liquid crystal display device includes first and second substrates facing each other and a liquid crystal layer between the first and second substrates. A plurality of gate bus lines are arranged in a first direction on the first substrate and a plurality of data bus lines are arranged in a second direction on the first substrate to define a pixel region. A pixel electrode is electrically charged through the data bus line in the pixel region. A common-auxiliary electrode surrounds the pixel electrode on a same layer whereon the gate bus line is formed.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: March 7, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Seong Moh Seo, Hyun Ho Shin, Kyeong Jin Kim, Yun Bok Lee, Jeom Jae Kim
  • Patent number: 7006188
    Abstract: An array substrate for use in an in-plane switching liquid crystal display device includes a plurality of gate lines having a first direction on a substrate; a plurality of data lines having a second direction substantially perpendicular to the plurality of gate lines, wherein pairs of the gate and data lines define a pixel region; a common line in the first direction between the plurality of gate lines; a plurality of common electrodes extending from the common line in the pixel region, wherein the common electrodes have an arc shape; thin film transistors disposed at four corners of the pixel region near crossings of the gate and data lines; a capacitor electrode above a portion of the common electrodes, wherein the capacitor electrode is connected to a corresponding thin film transistor; and a plurality of pixel electrodes connected to the capacitor electrode and disposed between the arc shape of the common electrodes, wherein the pixel electrodes are arc shaped, wherein the pixel region is divided into a
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: February 28, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yun-Bok Lee, Jeong-Hyun Kim
  • Patent number: 7002656
    Abstract: An array substrate for use in an in-plane switching liquid crystal display device includes a plurality of gate lines disposed in a first direction on a substrate; a plurality of data lines disposed in a second direction aslant the gate lines, wherein the gate and data lines have rounded portions and pairs of the gate and data lines define circular pixel regions; a common line disposed in the first direction between the pair of the gate lines; a circular common electrode connected to the common line; a thin film transistor disposed near each crossing of the gate and data lines; and a circular pixel electrode disposed in the circular pixel region, connected to the thin film transistor, and spaced apart from the circular common electrode.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: February 21, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventor: Yun Bok Lee
  • Patent number: 6992742
    Abstract: A multi-domain liquid crystal display device includes a liquid crystal layer between first and second substrates. A plurality of gate bus lines and data bus lines are arranged in a first and second direction, respectively, on the first substrate, to define a pixel region. A common-auxiliary electrode surrounds the pixel region on a same layer whereon the gate bus line is formed. A gate insulator and a passivation layer are formed over the whole first substrate. A pixel electrode, having an electric field inducing window in the inner part thereof, is formed in the pixel region. A light shielding layer is formed on the second substrate, a color filter is formed on the light shielding layer, a common electrode is formed on the color filter layer. An alignment layer is formed on at least one substrate between the first and second substrates.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: January 31, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Kyeong Jin Kim, Yun Bok Lee, Jang Jin Yoo
  • Publication number: 20060001812
    Abstract: An in-plane switching liquid crystal display device includes first and second substrates, gate lines and data lines on the first substrate and intersecting each other, a plurality of unit pixels defined by the intersection of the gate and data lines, each unit pixel including a plurality of sub-pixel regions, at least one common electrode and at least one common electrode and at least one pixel electrode alternately arranged in each of the sub-pixel regions to define a first region, an in-plane electric field being generated in the first region, and at least one of the common electrode and the pixel electrode having a first closed-curved surface shape with a hollow center, and a liquid crystal layer between the first substrate and the second substrate.
    Type: Application
    Filed: May 31, 2005
    Publication date: January 5, 2006
    Applicant: LG.PHILIPS LCD CO. LTD.
    Inventors: Yun-Bok Lee, Sang-Min Jang, Youn-Gyoung Chang, Won-Ho Lee
  • Patent number: 6967340
    Abstract: An ion beam irradiation device includes a vacuum chamber and a stage on which at least two substrates may be mounted such that each substrate has an inclination angle to a horizontal plane of the vacuum chamber. The stage moves in one direction. An ion gun provided in the vacuum chamber produces ion beams that irradiate the substrates. In a single pass through the vacuum chamber, the alignment layers disposed on multiple substrates may be aligned. The substrates can be aligned such that the ion beam irradiates multiple substrates simultaneously and/or such that the ion beam irradiates the multiple substrates sequentially.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: November 22, 2005
    Assignee: Alps Electric Co., Ltd.
    Inventors: Yun Bok Lee, Yong Sung Ham
  • Publication number: 20050206822
    Abstract: A liquid crystal display device includes: gate lines and data lines on a first substrate, the gate lines and the data lines crossing each other and defining a pixel region; a thin film transistor adjacent to a crossing of the gate and data lines; a common line in parallel to the gate line; a common electrode extending from the common line and having a circular shape; a pixel electrode connected to the thin film transistor and having a circular shape; an auxiliary common line on a second substrate spaced apart from and facing the first substrate; an auxiliary common electrode extending from the auxiliary common line and having a circular shape; and a liquid crystal layer between the first and second substrates.
    Type: Application
    Filed: December 16, 2004
    Publication date: September 22, 2005
    Inventor: Yun-Bok Lee
  • Patent number: 6940574
    Abstract: A multi-domain liquid crystal display device includes first and second substrates facing each other and a liquid crystal layer between the first and second substrates. A conductive layer distorting electric field is on the first substrate, and a common-auxiliary electrode is on a same layer whereon the conductive layer distorting electric field is formed. A common electrode is on the second substrate, and a storage electrode is in an electric field inducing region that divides the liquid crystal layer into at least two domains.
    Type: Grant
    Filed: December 2, 2003
    Date of Patent: September 6, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Yun Bok Lee, Doo Hyun Ko, Joun Ho Lee
  • Patent number: 6940571
    Abstract: A liquid crystal display (LCD) device is disclosed, in which a hole or groove is formed at the same direction as the axis of polarization of first and second polarizers for improving the luminance, and an electric field inducing window or a dielectric protrusion is formed corresponding to the center of the hole or groove to stabilize the texture of liquid crystal layer.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: September 6, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Yong Sung Ham, Yun Bok Lee
  • Patent number: 6929967
    Abstract: A method of forming a pattern suitable for fabricating a liquid crystal device which includes the steps of forming a film on a substrate, printing a resist pattern by having the film covered with a screen mask, etching the film using the resist pattern as a mask, and stripping the resist pattern.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: August 16, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Yun Bok Lee, Dong Hoon Lee
  • Patent number: 6924917
    Abstract: A color filter substrate for a liquid crystal display device includes a polarizing substrate, a black matrix positioned on the polarizing substrate, a color filter layer positioned on the black matrix, and a common electrode positioned on the color filter layer.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: August 2, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Yun-Bok Lee, Jong-Hoon Yi
  • Publication number: 20050128404
    Abstract: A process for forming an in-plane switching liquid crystal display device includes: defining a first liquid crystal cell area that has a first size and a second liquid crystal cell area that has a second size on a first bare glass, wherein first longer sides of the first liquid crystal cell area run in a first direction on the first bare glass and second longer sides of the second liquid crystal cell areas run in a second direction; forming array elements that include thin film transistors, common electrodes and pixel electrodes within the first and second liquid crystal cell areas of the first bare glass, wherein the common electrodes and pixel electrodes define concentric ring-shaped apertures; rubbing the first bare glass having the array elements in a first rubbing direction; forming a color filter layer on a second bare glass wherein liquid crystal cell areas corresponding in size to the first and second liquid crystal cell areas are defined; and rubbing the second bare glass having the color filter in a
    Type: Application
    Filed: April 15, 2004
    Publication date: June 16, 2005
    Inventor: Yun-Bok Lee
  • Publication number: 20050128407
    Abstract: An array substrate for use in an in-plane switching liquid crystal display device includes a plurality of gate lines having a first direction on a substrate; a plurality of data lines having a second direction substantially perpendicular to the plurality of gate lines, wherein pairs of the gate and data lines define a pixel region; a common line in the first direction between the plurality of gate lines; a plurality of common electrodes extending from the common line in the pixel region, wherein the common electrodes have an arc shape; thin film transistors disposed at four corners of the pixel region near crossings of the gate and data lines; a capacitor electrode above a portion of the common electrodes, wherein the capacitor electrode is connected to a corresponding thin film transistor; and a plurality of pixel electrodes connected to the capacitor electrode and disposed between the arc shape of the common electrodes, wherein the pixel electrodes are arc shaped, wherein the pixel region is divided into a
    Type: Application
    Filed: April 16, 2004
    Publication date: June 16, 2005
    Inventors: Yun-Bok Lee, Jeong-Hyun Kim
  • Publication number: 20050128405
    Abstract: A method of fabricating an in-plane switching mode liquid crystal display device includes: forming array elements on a first substrate, the array elements including field-generating electrodes having a curved shape; rubbing one of the first substrate and a second substrate in one direction, which can be any direction; and forming a liquid crystal layer between the first substrate and a second substrate such that at least a portion of the liquid crystal is oriented in the one direction.
    Type: Application
    Filed: April 15, 2004
    Publication date: June 16, 2005
    Inventor: Yun-Bok Lee
  • Publication number: 20050128401
    Abstract: A fringe field switching mode liquid crystal display device includes opposing first and second substrates having a liquid crystal layer disposed therebetween. A gate line and a data line crossing the gate line define a pixel region on the first substrate. A thin film transistor is connected to the gate line and the data line, a common line is parallel to and spaced apart from the gate line, and a common electrode extends from the common line. A pixel electrode is connected to the thin film transistor and overlaps the common electrode. One of the pixel and common electrodes is substantially square and the other has a circular or spiral shape.
    Type: Application
    Filed: June 23, 2004
    Publication date: June 16, 2005
    Inventor: Yun-Bok Lee
  • Publication number: 20050128406
    Abstract: An in-plane switching mode liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line on the first substrate; a data line crossing the gate line to define a pixel region including a plurality of domains; a thin film transistor connected to the gate line and the data line; a common line parallel to and spaced apart from the gate line; a common electrode extending from the common line and having a ring shape; a pixel electrode connected to the thin film transistor and having a ring shape, the pixel electrode alternating with the common electrode; and a liquid crystal layer between the pixel electrode and the second substrate, the liquid crystal layer in neighboring domains having orientation directions different from each other.
    Type: Application
    Filed: April 15, 2004
    Publication date: June 16, 2005
    Inventor: Yun-Bok Lee