Patents by Inventor Suk-Won Choi

Suk-Won 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).

  • Publication number: 20020159017
    Abstract: A liquid crystal display panel employing an in plane switching (IPS) mode wherein an alignment direction of a liquid crystal is moved on a plane parallel to the surface of the panel. In the panel, electrode patterns are formed on each substrate in such a manner to be opposed to each other. A liquid crystal layer is filled between the substrates provided with the electrode patterns. Alignment films are formed on each of the substrates in such a manner to be positioned between the electrode patterns and the liquid crystal layer. The alignment films allow an alignment direction of the liquid crystal layer to be changed on a plane parallel to the surfaces of the substrates by an electric field applied between the electrode patterns.
    Type: Application
    Filed: June 18, 2002
    Publication date: October 31, 2002
    Inventors: Suk Won Choi, Su Seok Choi
  • Patent number: 6456355
    Abstract: A liquid crystal panel for the liquid crystal display device has a plurality of ribs disposed on an opposite internal edge to the injection hole in order to speed up the injection time of the liquid crystal and the ribs of the liquid crystal panel have a shape of the teeth of a comb.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: September 24, 2002
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Suk-Won Choi, Su-Seok Choi
  • Patent number: 6417907
    Abstract: A liquid crystal display panel employing an in plane switching (IPS) mode wherein an alignment direction of a liquid crystal is moved on a plane parallel to the surface of the panel. In the panel, electrode patterns are formed on each substrate in such a manner to be opposed to each other. A liquid crystal layer is filled between the substrates provided with the electrode patterns. Alignment films are formed on each of the substrates in such a manner to be positioned between the electrode patterns and the liquid crystal layer. The alignment films allow an alignment direction of the liquid crystal layer to be changed on a plane parallel to the surfaces of the substrates by an electric field applied between the electrode patterns.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: July 9, 2002
    Assignee: LG. Philips LCD Co., LTD
    Inventors: Suk Won Choi, Su Seok Choi
  • Publication number: 20020085132
    Abstract: A pressure sealing apparatus and method for a ferroelectric liquid crystal display is disclosed for improving an alignment characteristic of a liquid crystal. In the apparatus and method, simultaneously with a pressurization of a liquid crystal display panel into which a liquid crystal has been injected, the liquid crystal display panel is subjected to a temperature treatment along with an application of an electric field.
    Type: Application
    Filed: December 19, 2001
    Publication date: July 4, 2002
    Inventors: Suk Won Choi, Su Seok Choi
  • Publication number: 20020085153
    Abstract: A ferroelectric liquid crystal display having alignment films with different surface polarities. The alignment films induce an internal electric field through the liquid crystal. Because of the induced internal electric field, initial liquid crystal alignment, and subsequent liquid crystal alignments, can be performed without an externally applied electric field.
    Type: Application
    Filed: June 29, 2001
    Publication date: July 4, 2002
    Inventors: Suk Won Choi, Su Seok Choi
  • Publication number: 20020085166
    Abstract: The present invention is related to a method of fabricating a ferroelectric liquid crystal display which prevents problems of injecting liquid crystal that result from a volume shrinking of the liquid crystal during the injection process. In the method, the pressure in a chamber is changed to above a liquid crystal injection pressure, while cooling a liquid crystal panel after injecting the liquid crystal, and at the same time, the temperature of a liquid crystal tray maintained at a liquid crystal injection temperature, to continue injection of the liquid crystal to an otherwise un-injected portion of the liquid crystal panel, so that an problems related to inadequate injection can be prevented.
    Type: Application
    Filed: December 18, 2001
    Publication date: July 4, 2002
    Inventors: Suk Won Choi, Su Seok Choi
  • Publication number: 20020084973
    Abstract: A ferroelectric liquid crystal display and a fabricating method thereof that is capable of improving light efficiency by preventing light efficiency deterioration due to the low voltage holding ratio of a ferroelectric liquid crystal. The ferroelectric liquid crystal display supplies red, green and blue data signals to each of the liquid crystal cells and is in a stand-by state during a responding period of liquid crystal, and then sequentially generates red, green and blue lights corresponding to each of the red, green and blue data signals. With this configuration, deterioration in brightness due to the low voltage holding ratio of the ferroelectric liquid crystal can be prevented and the light efficiency can be increased.
    Type: Application
    Filed: December 18, 2001
    Publication date: July 4, 2002
    Inventors: Suk Won Choi, Su Seok Choi, Jang Jin Yoo, Moo Jong Lim
  • Publication number: 20020080305
    Abstract: A ferroelectric liquid crystal display and a fabricating method thereof that is capable of maintaining a stable alignment state against external temperature variation and external impact. In the method and apparatus, a ferroelectric liquid crystal containing a small amount of light-hardening polymer is injected between upper and lower substrates provided with alignment film. An ultraviolet ray is irradiated thereon to form a polymer network. The ultraviolet ray has a light intensity range of about 1 to about 5 mW/cm2, and has a light energy range of about 240 to about 1200 mJ/cm2.
    Type: Application
    Filed: December 7, 2001
    Publication date: June 27, 2002
    Inventors: Suk Won Choi, Su Seok Choi
  • Publication number: 20020063838
    Abstract: A liquid crystal panel for the liquid crystal display device has a plurality of ribs disposed on an opposite internal edge to the injection hole in order to speed up the injection time of the liquid crystal and the ribs of the liquid crystal panel have a shape of the teeth of a comb.
    Type: Application
    Filed: November 27, 2001
    Publication date: May 30, 2002
    Inventors: Suk-Won Choi, Su-Seok Choi
  • Publication number: 20020047981
    Abstract: A liquid crystal display device includes a thin film transistor substrate, on which a plurality of data lines and gate lines are positioned perpendicular to each other; a plurality of pixel electrodes formed near intersections of the data lines and the gate lines; a color filter substrate positioned parallel to the thin film transistor substrate, including a color filter layer, a black matrix and a common electrode formed thereon; a polymer wall arrangement formed either on the thin film transistor substrate or on the color filter substrate dividing the substrate into a plurality of liquid crystal panels; and at least one liquid crystal injection opening formed on each panel of the plurality of liquid crystal panels.
    Type: Application
    Filed: October 22, 2001
    Publication date: April 25, 2002
    Applicant: LG.Philips LCD Co., Ltd.
    Inventors: Su Seok Choi, Suk Won Choi
  • Patent number: 6368757
    Abstract: A cholesteric liquid crystal color filter plate which includes a substrate, a first light filter region on the substrate wherein the first light filter region is formed of a cholesteric liquid crystal mixture which is permeable to a red wavelength zone by reflecting blue and green wavelength zones, a second light filter region on the substrate wherein the second light filter region formed of a cholesteric liquid crystal mixture is permeable to the blue wavelength zone by reflecting the green and red wavelength zones, and a third light filter region on the substrate wherein the third light filter region formed of a cholesteric liquid crystal-dye mixture is permeable to the green wavelength zone. The cholesteric liquid crystal-dye mixture is manufactured by mixing a cholesteric liquid crystal reflecting one of the red wavelength zone or the blue wavelength zone, with a dye absorbing the remaining wavelength zone which is not selected by the cholesteric liquid crystal.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: April 9, 2002
    Assignee: LG. Philips LCD Co., Ltd.
    Inventor: Suk-won Choi
  • Publication number: 20020033928
    Abstract: A liquid crystal display is provided that includes liquid crystal pixel cells arranged at each intersection between a plurality of gate lines and a plurality of data lines, a thin film transistor associated with each pixel cell, a storage capacitor, and a smectic liquid crystal between an upper substrate and a lower substrate. The smectic liquid crystal has spontaneous polarization in a range of approximately 2 nC/cm2 to 100 nC/cm2 and a storage capacitance is in a range of approximately 1 nF/cm2 to 13 nF/cm2 for optimizing transmittance depending on the spontaneous polarization of the smectic liquid crystal.
    Type: Application
    Filed: September 4, 2001
    Publication date: March 21, 2002
    Applicant: LG Philips LCD Co., Ltd.
    Inventors: Suk Won Choi, Su Seok Choi
  • Publication number: 20010024261
    Abstract: A liquid crystal display device, and a method of fabricating such a liquid crystal display device, that uses a ferroelectric liquid crystal (FLC). Additives are added to the ferroelectric liquid crystal. The additives are then used to form polymer networks, beneficially by exposure to ultraviolet light. Suitable additives include an acrylate compound.
    Type: Application
    Filed: December 21, 2000
    Publication date: September 27, 2001
    Inventors: Suk-Won Choi, Su-Seok Choi
  • Publication number: 20010022641
    Abstract: A liquid crystal display panel including first and second substrates, and a FLC layer interposed therebetween. A small quantity of additives are mixed in the FLC layer, without changing the electrical or chemical properties of the FLC. Under a proper temperature and an electric field, the FLC layer is ripened sufficiently. Thereafter, the FLC is exposed to light such that polymer networks are formed in the FLC layer due to the polymerization by the additives. The polymer networks connect with each other across molecular layers in the FLC such that the molecules of the FLC are stabilized in proper orientations and maintain their molecular layer structure regardless of the temperature variance. And, the diffraction grating becomes stable regardless of the temperature variance, and fast response time and good gray scale are achieved.
    Type: Application
    Filed: December 20, 2000
    Publication date: September 20, 2001
    Inventors: Suk-Won Choi, Hyung-Ki Hong
  • Publication number: 20010022642
    Abstract: A liquid crystal display device having first and second substrates with an interposed liquid crystal layer that has a negative or a positive dielectric anisotropy. First and second electrodes are formed on opposing surfaces of the first and second substrates. A first orientation film comprised of a ferroelectric liquid crystal polymer is formed on the first electrode, and a second orientation film is formed on the second electrode. First and second polarizers are formed on exterior surfaces of the first and second substrates.
    Type: Application
    Filed: December 27, 2000
    Publication date: September 20, 2001
    Inventors: Jang-Jin Yoo, Suk-Won Choi, Su-Seok Choi
  • Publication number: 20010019393
    Abstract: In the preferred embodiment of the present invention, a ferroelectric LC layer is formed between first and second substrates of a LC panel. The LC panel is cooled at a low temperature, for example at −20° C., where the ferroelectric LC maintains a smetic phase. Due to the cooling, molecules are uniformly aligned for their early alignment state.
    Type: Application
    Filed: December 28, 2000
    Publication date: September 6, 2001
    Inventors: Suk-Won Choi, Su-Seok Choi
  • Publication number: 20010006407
    Abstract: A liquid crystal display panel employing an in plane switching (IPS) mode wherein an alignment direction of a liquid crystal is moved on a plane parallel to the surface of the panel. In the panel, electrode patterns are formed on each substrate in such a manner to be opposed to each other. A liquid crystal layer is filled between the substrates provided with the electrode patterns. Alignment films are formed on each of the substrates in such a manner to be positioned between the electrode patterns and the liquid crystal layer. The alignment films allow an alignment direction of the liquid crystal layer to be changed on a plane parallel to the surfaces of the substrates by an electric field applied between the electrode patterns.
    Type: Application
    Filed: December 29, 2000
    Publication date: July 5, 2001
    Inventors: Suk Won Choi, Su Seok Choi