Patents by Inventor Mi Sook Nam

Mi Sook Nam 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).

  • Publication number: 20160236443
    Abstract: The present invention relates to an optically transparent composite film for a display, comprising: a polymer substrate containing a transparent thermoplastic base resin; a plasma surface treatment layer formed on one surface of the polymer substrate and surface-modified through plasma treatment; an inorganic gas barrier layer formed on the upper surface of the plasma surface treatment layer; an organic-inorganic hybrid overcoating layer formed on the upper surface of the inorganic gas barrier layer and including a curable product of a curable sol solution; and an inorganic rear layer formed on the other surface of the polymer substrate.
    Type: Application
    Filed: October 8, 2013
    Publication date: August 18, 2016
    Inventors: Hee-Nam HWANG, Yong-Ho PARK, Sang-Sik YOON, Se-Won KIM, Ki-Ho LEE, Mi-Sook NAM
  • Patent number: 8576361
    Abstract: A transflective liquid crystal display device and a fabricating method thereof are disclosed in the present invention. The transflective liquid crystal display device includes a substrate having a reflective portion and a transmissive portion, a gate line on the substrate, a data line crossing the gate line and defining a pixel region, a thin film transistor connected to the gate line and the data line, a first organic material layer in the pixel region, the first organic material layer having a plurality of uneven patterns at the reflective portion, a second organic material layer on the first organic material layer, the second organic material layer having an open portion at the transmissive portion, and a reflective layer on the second organic material layer having a transmissive hole at the open portion.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: November 5, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Mi-Sook Nam, Dong-Guk Kim
  • Patent number: 8491973
    Abstract: A photo-alignment material, a liquid crystal display device using the photo-alignment material, and a manufacturing method. The photo-alignment material is a polymer having a photo-reactive ethenyl group on a main chain. When used as a photo-alignment layer, the photo-alignment material enables improved alignment stability against external shocks, light, and heat. The liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer formed between the first and second substrates, and a photo-alignment layer formed at least on the first substrate, with the photo-alignment layer formed from a photo-alignment material having an ethenyl group at a main chain.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: July 23, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Mi Sook Nam
  • Patent number: 8363188
    Abstract: An array substrate of an LCD and a fabricating method thereof are provided. A first insulating layer is formed on the substrate. A TFT and a hardened liquid crystal layer are provided in a pixel region of the substrate. A second insulating layer is formed in the pixel region around the hardened liquid crystal layer such that the second insulating layer and the hardened liquid crystal layer are substantially planar. A first alignment layer is formed between the hardened liquid crystal layer and the first insulating layer. A pixel electrode is formed on the second insulating layer and the hardened liquid crystal layer and contacts a drain region of the TFT through a hole in the first insulating layer. A second alignment layer is formed on the entire substrate over the second insulating layer and the hardened liquid crystal layer.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: January 29, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Mi Sook Nam, Jong Won Moon, Se June Kim, Ha Young Lee
  • Patent number: 8319920
    Abstract: A transflective liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line on an inner surface of the first substrate; a data line crossing the gate line to define a pixel region including a reflective portion and a transmissive portion, wherein the transmissive portion has a polygonal shape inscribed in a rectangle, and a circumference of the transmissive portion is less than the circumference of the rectangle; a thin film transistor connected to the gate line and the data line; a passivation layer on the thin film transistor, the passivation layer having a opening corresponding to the transmissive portion; a reflective layer corresponding to the reflective portion on the passivation layer; a transparent electrode corresponding to the pixel region over the reflective layer; a color filter layer on an inner surface of the second substrate; a common electrode on the color filter layer; and a liquid crystal layer between the common electrode and the
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: November 27, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Kyoung-Su Ha, Mi-Sook Nam, Su-Seok Choi, Sang-Min Jang
  • Patent number: 8212977
    Abstract: An in-plane switching mode liquid crystal display device includes: a lower substrate and an upper substrate which face each other; a gate line and a data line on the lower substrate such that the gate line and the data line cross each other to define a pixel region that is divided into a transmissive region and a reflective region; a thin film transistor arranged at a crossing of the gate line and the data line; a reflective plate in the reflective region; a pixel electrode and a common electrode arranged in an alternating pattern at the pixel region; a retardation layer arranged on the upper substrate to correspond to the reflective region; a liquid crystal layer between the upper substrate and the lower substrate; and a first polarizing plate and a second polarizing plate at outer surfaces of the lower substrate and the upper substrate, respectively.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: July 3, 2012
    Assignee: LG Display Co. Ltd.
    Inventors: Mi Sook Nam, Hyung Ki Hong
  • Patent number: 8169573
    Abstract: A liquid crystal display (LCD) device is provided. The LCD device includes an LCD panel having a first liquid crystal layer therein; a first polarizing sheet; and a first phase-difference compensation portion disposed adjacent a first surface of the LCD panel between the LCD panel and the first polarizing sheet. The first phase-difference compensation portion includes a plurality of phase-difference films having at least second and third liquid crystal layers with tilt angles that are different.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: May 1, 2012
    Assignee: LG Display Co., Ltd.
    Inventor: Mi Sook Nam
  • Patent number: 7901605
    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: September 15, 2009
    Date of Patent: March 8, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Mi Sook Nam, Young Seok Choi
  • Publication number: 20100225863
    Abstract: A transflective liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line on an inner surface of the first substrate; a data line crossing the gate line to define a pixel region including a reflective portion and a transmissive portion, wherein the transmissive portion has a polygonal shape inscribed in a rectangle, and a circumference of the transmissive portion is less than the circumference of the rectangle; a thin film transistor connected to the gate line and the data line; a passivation layer on the thin film transistor, the passivation layer having a opening corresponding to the transmissive portion; a reflective layer corresponding to the reflective portion on the passivation layer; a transparent electrode corresponding to the pixel region over the reflective layer; a color filter layer on an inner surface of the second substrate; a common electrode on the color filter layer; and a liquid crystal layer between the common electrode and the
    Type: Application
    Filed: May 17, 2010
    Publication date: September 9, 2010
    Inventors: Kyoung-Su HA, Mi-Sook NAM, Su-Seok CHOI, Sang-Min JANG
  • Patent number: 7742133
    Abstract: A transflective liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line on an inner surface of the first substrate; a data line crossing the gate line to define a pixel region including a reflective portion and a transmissive portion, wherein the transmissive portion has a polygonal shape inscribed in a rectangle, and a circumference of the transmissive portion is less than the circumference of the rectangle; a thin film transistor connected to the gate line and the data line; a passivation layer on the thin film transistor, the passivation layer having a opening corresponding to the transmissive portion; a reflective layer corresponding to the reflective portion on the passivation layer; a transparent electrode corresponding to the pixel region over the reflective layer; a color filter layer on an inner surface of the second substrate; a common electrode on the color filter layer; and a liquid crystal layer between the common electrode and the
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: June 22, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Kyoung-Su Ha, Mi-Sook Nam, Su-Seok Choi, Sang-Min Jang
  • Patent number: 7679704
    Abstract: An IPS (in-plane switching mode) liquid crystal display device and fabricating method thereof, in which post treatment lowering the pre-tilt angle is performed on a rubbed alignment layer on a substrate using a non-rubbing method such as UV or ion-beam irradiation, and by which a viewing angle characteristic is enhanced. The present invention includes a first substrate, a second substrate, a gate line and a data line crossing with each other on the first substrate to define a pixel area, a thin film transistor at a crossing of the gate and data lines, a pixel electrode and a common electrode alternately arranged in the pixel area a predetermined interval from each other, an alignment layer over the pixel and common electrodes having a pre-tilt angle equal to or smaller than about 1°, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: March 16, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Yong Sung Ham, Mi Sook Nam, Su Hyun Park
  • Patent number: 7663596
    Abstract: The trans-reflective liquid crystal display device of this invention includes a plurality of data and gate lines defining a plurality of pixels, the pixels having a reflection region and a transmission region; a timing controller that receives, converts, and outputs image data; a switching unit that determines the output signal of the timing controller according to a transmission mode or reflection mode; a gate driver that receives a gate signal from the timing controller; a data driver that receives a data signal from the timing controller; a liquid crystal display panel with a TFT array substrate and a color filter substrate, the liquid crystal display panel displaying the image according to a gate pulse and a data voltage applied by the gate driver and the data driver; a sequential backlight including red, green, and blue lamps wherein, the backlight is turned on in a transmission mode to sequentially transmit the light into the transmission region and is turned off in a reflection mode.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: February 16, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Mi-Sook Nam, Sang-Min Jang, Su-Seok Choi
  • Publication number: 20100009069
    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: Application
    Filed: September 15, 2009
    Publication date: January 14, 2010
    Inventors: Mi Sook Nam, Young Seok Choi
  • 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: 7440055
    Abstract: A transflective liquid crystal display device includes a pixel region having reflective and transmissive portions. A first passivation layer having one or more protrusions in the reflective portion is disposed on a thin film transistor formed on a first substrate. A reflective layer disposed on the first passivation layer in the reflective portion is uneven, at least in part due to the protrusions. A second passivation layer and a pixel electrode are disposed on the first passivation layer. A color filter layer disposed on an inner surface of the second substrate has at least one through hole in the reflective portion. An overcoat layer disposed on the color filter layer has an open portion in the transmissive portion. A common electrode is disposed on the overcoat layer and a liquid crystal layer is disposed between the pixel electrode and the common electrode.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: October 21, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Mi-Sook Nam, Sang-Min Jang, Su-Seok Choi
  • Patent number: 7429412
    Abstract: A liquid crystal display device includes a first substrate; a second substrate; a first alignment layer on the first substrate, the first alignment layer including a first additive; a second alignment layer on the second substrate; and a liquid crystal layer between the first substrate and the second substrate.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: September 30, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Mi Sook Nam, Su Hyun Park
  • Publication number: 20070153195
    Abstract: An in-plane switching mode liquid crystal display device includes: a lower substrate and an upper substrate which face each other; a gate line and a data line on the lower substrate such that the gate line and the data line cross each other to define a pixel region that is divided into a transmissive region and a reflective region; a thin film transistor arranged at a crossing of the gate line and the data line; a reflective plate in the reflective region; a pixel electrode and a common electrode arranged in an alternating pattern at the pixel region; a retardation layer arranged on the upper substrate to correspond to the reflective region; a liquid crystal layer between the upper substrate and the lower substrate; and a first polarizing plate and a second polarizing plate at outer surfaces of the lower substrate and the upper substrate, respectively.
    Type: Application
    Filed: December 12, 2006
    Publication date: July 5, 2007
    Inventors: Mi Sook Nam, Hyung Ki Hong
  • Patent number: 7220467
    Abstract: A photo-alignment material, a liquid crystal display device using the photo-alignment material, and a manufacturing method. The photo-alignment material is a polymer having a photo-reactive ethenyl group on a main chain. When used as a photo-alignment layer, the photo-alignment material enables improved alignment stability against external shocks, light, and heat. The liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer formed between the first and second substrates, and a photo-alignment layer formed at least on the first substrate, with the photo-alignment layer formed from a photo-alignment material having an ethenyl group at a main chain.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: May 22, 2007
    Assignee: LG.Phillips LCD Co., Ltd.
    Inventor: Mi Sook Nam
  • Patent number: 7205971
    Abstract: A driving circuit of a liquid crystal display device includes gate and data lines, a thin film transistor connected to the gate and data lines, and a liquid crystal capacitor connected to the thin film transistor. The driving circuit includes a gate driving unit for generating a gate signal applied to the gate line, a source driving unit for generating a data signal applied to the data line, a gamma power source unit for applying a gamma reference voltage to the source driving unit, a common voltage unit for applying a common voltage to the liquid crystal capacitor, a discharging signal unit for generating a discharging enable signal when a power of the liquid crystal display device is off, and a multiplexer, connected to the common voltage unit and the gamma power source unit, for selectively applying a voltage to the source driving unit according to the discharging enable signal.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: April 17, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Heum-Il Baek, Mi-Sook Nam
  • Patent number: 7145618
    Abstract: A method is disclosed for controlling a pretilt angle direction for a liquid crystal cell comprising the steps of first setting the magnitude of pretilt angle and a plurality of pretilt angle directions in an alignment layer. This first step is achieved by irradiating linearly the alignment layer with polarized or unpolarized UV light. One of the plurality of pretilt angle directions is then selected by exposing the alignment layer to UV light a second time.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: December 5, 2006
    Assignee: LG.Philips LCD Co., Ltd
    Inventors: Yuriy Reznikov, Oleg Yaroshchuk, Joung Won Woo, Yoo Jin Choi, Ki Hyuk Yoon, Mi Sook Nam, Jong Hyun Kim, Soon Bum Kwon