Patents by Inventor Soon-Joon Rho

Soon-Joon Rho 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: 9291856
    Abstract: A liquid crystal display panel includes a first substrate, a second substrate that faces the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules that have negative dielectric anisotropy and a nematic-isotropic phase transition temperature (Tni) of about 110° C. or more.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: March 22, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon Joon Rho, Kyungmin Kim, Jin-Lak Kim, Joon-Hyung Park, Hyelim Jang, Kyungseon Tak
  • Patent number: 9284488
    Abstract: The present disclosure relates to a liquid crystal display device including a first substrate including a first base substrate and a first alignment layer provided on the first base substrate, a second substrate including a second base substrate facing the first base substrate and a second alignment layer provided on the second base substrate. The device further includes a liquid crystal layer provided between the first substrate and the second substrate and including a liquid crystal composition. The liquid crystal layer may include a bicyclohexane liquid crystal compound and an alkenyl liquid crystal compound.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: March 15, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon Joon Rho, Jin-Lak Kim, Kyungmin Kim, Hyelim Jang
  • Publication number: 20150322341
    Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having a negative dielectric anisotropy, a response speed of about 4.0 ms or less, and a rotational viscosity of about 47 mPa·S to about 75 mPa·S.
    Type: Application
    Filed: October 21, 2014
    Publication date: November 12, 2015
    Inventors: Soon Joon RHO, Kyungmin KIM, Jin-Lak KIM, Hyelim JANG
  • Patent number: 9151981
    Abstract: The viewing angle of a Liquid Crystal Display (LCD) apparatus is expanded by means of a sampled light redirecting layer, In one embodiment, the sampled light redirecting layer is formed as a compensation layer disposed between a top polarizing plate and the rest of a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal layer interposed therebetween. The compensation layer includes at least two optical path changing patterns disposed in interleaved manner. The two optical path changing patterns have different refractive indexes. As a result of the different refractive indices and shapes of the at least two different optical path changing patterns some of the light rays sampled out of the output of the rest of a liquid crystal display panel are directed in a first direction by means of reflection or refraction and some are directed in a different second direction, thereby improving a side visibility of the display apparatus.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung Hwan Hong, Soon Joon Rho, Jae-Soo Jang, Jun Ha Park
  • Publication number: 20150205173
    Abstract: In a display panel and a method of manufacturing the display panel, the display panel includes a display substrate including a first electrode and a second electrode insulated from the first electrode and disposed on the first electrode, an opposite substrate including a third electrode facing the second electrode, and a liquid crystal layer interposed between the display substrate and the opposite substrate. The liquid crystal layer includes liquid crystal molecules, a reactive mesogen polymer, and nano-rods.
    Type: Application
    Filed: March 30, 2015
    Publication date: July 23, 2015
    Inventors: Soon-Joon RHO, Hyeok-Jin Lee, Ji-Hong Bae, Jun Ha Park, Hye-Lim Jang, Tae-Hoon Yoon, Dong-Han Song, Ki-Han Kim, Jung-Wook Kim
  • Publication number: 20150177575
    Abstract: A liquid crystal display includes a first substrate, a first subpixel electrode is disposed on the first substrate and has a planar shape and, an insulating layer disposed on the first subpixel electrode, a second subpixel electrode which is disposed on the insulating layer, overlaps the first subpixel electrode, and includes a plurality of branch electrodes, a second substrate facing the first substrate, a common electrode disposed on the second substrate, and a liquid crystal layer injected between the first substrate and the second substrate, where the first subpixel electrode and the second subpixel electrode are applied with voltages of the same magnitude, and dielectric anisotropy of the liquid crystal layer is about ?2.0 to about ?2.7 at a temperature of about 30 degrees Celsius.
    Type: Application
    Filed: November 14, 2014
    Publication date: June 25, 2015
    Inventors: Soon Joon RHO, Hye Lim JANG, Kyung Min KIM, Jin-Lak KIM
  • Patent number: 9019453
    Abstract: A liquid crystal display includes a plurality of pixels, a first substrate, a second substrate, and a liquid crystal layer disposed between the first and second substrates. The first substrate includes a first base substrate and a pixel electrode provided on the first base substrate to correspond to each of the pixels. The second substrate includes a second base substrate facing the first base substrate and a common electrode provided on the second base substrate. The common electrode forms an electric field having an equipotential surface substantially parallel to an upper surface of the first base substrate in cooperation with the pixel electrode. The liquid crystal layer is disposed between the pixel electrode and the common electrode and includes a liquid crystal composition having an anisotropic dielectric constant equal to or smaller than ?2.9 and equal to or larger than ?1.7.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: April 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon Joon Rho, Jun Ha Park, Jihong Bae, Hyelim Jang, Hyeokjin Lee
  • Publication number: 20150109551
    Abstract: A liquid crystal display panel includes a first substrate including a pixel electrode, a second substrate a second substrate including a common electrode and disposed opposite to the first substrate, and a liquid crystal layer between the first substrate and the second substrate, where the liquid crystal layer includes liquid crystal molecules having an elastic coefficient of bend phase (K33) and an elastic coefficient of splay phase (K11), and a ratio of the elastic coefficient of bend phase (K33) to the elastic coefficient of splay phase (K11) of the liquid crystal molecules in the liquid crystal layer is in a range of about 0.96 to about 1.25.
    Type: Application
    Filed: August 18, 2014
    Publication date: April 23, 2015
    Inventors: Soon-Joon RHO, Kyung-Min KIM, Jin-Lak KIM, Hye-Lim JANG, Keun-Chan OH
  • Patent number: 8994910
    Abstract: In a display panel and a method of manufacturing the display panel, the display panel includes a display substrate including a first electrode and a second electrode insulated from the first electrode and disposed on the first electrode, an opposite substrate including a third electrode facing the second electrode, and a liquid crystal layer interposed between the display substrate and the opposite substrate. The liquid crystal layer includes liquid crystal molecules, a reactive mesogen polymer, and nano-rods.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: March 31, 2015
    Assignees: Samsung Display Co., Ltd., Institute for Research & Industry Cooperation, PNU
    Inventors: Soon-Joon Rho, Hyeok-Jin Lee, Ji-Hong Bae, Jun-Ha Park, Hye-Lim Jang, Tae-Hoon Yoon, Dong-Han Song, Ki-Han Kim, Jung-Wook Kim
  • Publication number: 20150077672
    Abstract: Disclosed is a liquid crystal display including: a first substrate; a second substrate facing the first substrate; a thin film transistor disposed on the first substrate; a pixel electrode connected to the thin film transistor and including a first subpixel electrode and a second subpixel electrode; a common electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, and including liquid crystal molecules therein. The first and second subpixel electrodes include a cross-shaped stem portion including horizontal and vertical stem portions, and a plurality of micro-branch portions extending from the cross-shaped stem portion, a thickness of the liquid crystal layer being 2.4 ?m to 3.2 ?m, the dielectric anisotropy of the liquid crystal molecule being ?3.0 to ?2.0, and a pitch of the micro-branch portion being 4 ?m to 6 ?m.
    Type: Application
    Filed: April 23, 2014
    Publication date: March 19, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Soon Joon RHO, Kyung Min KIM, Jin-Lak KIM, Hye Lim JANG, Keun Chan OH
  • Publication number: 20150070625
    Abstract: A liquid crystal display panel includes a first substrate, a second substrate that faces the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules that have negative dielectric anisotropy and a nematic-isotropic phase transition temperature (Tni) of about 110° C. or more.
    Type: Application
    Filed: May 8, 2014
    Publication date: March 12, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: SOON JOON RHO, KYUNGMIN KIM, JIN-LAK KIM, JOON-HYUNG PARK, HYELIM JANG, KYUNGSEON TAK
  • Publication number: 20150062514
    Abstract: The present disclosure relates to a liquid crystal display device including a first substrate including a first base substrate and a first alignment layer provided on the first base substrate, a second substrate including a second base substrate facing the first base substrate and a second alignment layer provided on the second base substrate. The device further includes a liquid crystal layer provided between the first substrate and the second substrate and including a liquid crystal composition. The liquid crystal layer may include a bicyclohexane liquid crystal compound and an alkenyl liquid crystal compound.
    Type: Application
    Filed: March 26, 2014
    Publication date: March 5, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon Joon RHO, Jin-Lak KIM, Kyungmin KIM, Hyelim JANG
  • Publication number: 20150042915
    Abstract: A liquid crystal display, including: a first insulation substrate; a gate line and a data line positioned on the first insulation substrate and crossing each other; a first passivation layer positioned on the gate line and the data line; a pixel electrode positioned on the first passivation layer; an alignment layer positioned on the pixel electrode; a second insulation substrate facing the first insulation substrate; and a liquid crystal positioned between the first insulation substrate and the second insulation substrate. A thickness of the alignment layer is larger than a thickness of the pixel electrode.
    Type: Application
    Filed: December 30, 2013
    Publication date: February 12, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Soon Joon RHO, Kyung Min Kim, Jin-Lak Kim, Hye Lim Jang, Keun Chan Oh
  • Publication number: 20150036088
    Abstract: A liquid crystal display includes an interval layer to reduce a cell gap between a lower substrate and an upper substrate. A first electrode is disposed on the lower substrate. The interval layer covers on the first electrode. A second electrode is disposed on the upper substrate and facing the lower electrode. A liquid crystal layer including a liquid crystal material is interposed between the interval layer and the second electrode. The first electrode includes repetitively patterned electrodes.
    Type: Application
    Filed: February 24, 2014
    Publication date: February 5, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD
    Inventors: Hyung Guen YOON, Soon Joon RHO, Hye Lim JANG
  • Patent number: 8947625
    Abstract: The present invention provides a panel capable of driving a liquid crystal in stable manner and improving response speed of the liquid crystal of a liquid crystal display, and the panel according to the present invention may include: a substrate; a first pixel electrode and a second pixel electrode disposed facing each other on the substrate; and a branch electrode extending from at least one of the first pixel electrode and the second pixel electrode.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: February 3, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Ho Hong, Hyeok-Jin Lee, Soon-Joon Rho, Yong-Woon Lim, Suk Choi, Oh-Jeong Kwon, Kyung-Hye Park, Su-Jin Kim
  • Publication number: 20140333878
    Abstract: A liquid crystal display is disclosed. The liquid crystal display may include an insulation substrate a pixel electrode formed on the insulation substrate a lower alignment layer formed on the pixel electrode and includes an inorganic alignment layer formed of an inorganic insulating material, a liquid crystal layer disposed in a microcavity formed on the lower alignment layer, an upper alignment layer formed along a side and an upper surface of the microcavity and includes an inorganic alignment layer formed of an inorganic insulating material, and a common electrode formed on the upper alignment layer. The upper alignment layer and the lower alignment layer enclose the liquid crystal layer. A method of manufacturing a liquid crystal display is also disclosed.
    Type: Application
    Filed: April 9, 2014
    Publication date: November 13, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hee Keun LEE, Yeun Tae KIM, Soon Joon RHO
  • Patent number: 8817207
    Abstract: A liquid crystal display including a first substrate; a light-blocking member disposed on the first substrate; an emission layer disposed on the first substrate; an ultraviolet-light blocking filter disposed on the emission layer; a lower polarizer disposed on the ultraviolet-light blocking filter; a gate line and a data line disposed on the lower polarizer and substantially perpendicular to each other; a thin film transistor electrically connected to the gate line and the data line; a pixel electrode electrically connected to the thin film transistor; a second substrate disposed facing the first substrate; a common electrode disposed on the second substrate; and a liquid crystal layer interposed between the first substrate and the second substrate.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: August 26, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soon-Joon Rho, Hyeok-Jin Lee, Hee-Keun Lee, Baek-Kyun Jeon
  • Patent number: 8724042
    Abstract: A twisted nematic liquid crystal display device includes a first substrate, a plurality of gate lines and a plurality of data lines formed on the first substrate, a plurality of pixels connected to the gate lines and the data lines and each pixel having a first subpixel and a second subpixel, a first subpixel electrode formed in the first subpixel, and a second subpixel electrode formed in the second subpixel. The voltage of the first subpixel electrode is greater than the voltage of the second subpixel electrode, and a ratio of the area of the second subpixel electrode to the area of the first subpixel electrode is in the range of 0.66 to 1.5.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: May 13, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Hwan Hong, Soon-Joon Rho, Jae-Soo Jang, Hee-Seop Kim
  • Publication number: 20140110868
    Abstract: A method for forming a display device includes forming a liquid crystal layer between a first substrate and a second substrate spaced apart from the first substrate, in which the liquid crystal layer includes a liquid crystal composition including a reactive mesogen, applying an electric field to the liquid crystal layer, firstly curing the liquid crystal layer at a temperature from about ?20° C. to about 60° C., and secondly curing the liquid crystal layer without applying the electric field. The liquid crystal composition includes the reactive mesogen in an amount exceeding 0 percent by weight and equal to or smaller than about 30 percent by weight relative to a total weight of the liquid crystal composition.
    Type: Application
    Filed: April 2, 2013
    Publication date: April 24, 2014
    Applicants: Pusan National Univ. Industry-University Cooperati, Samsung Display Co., Ltd.
    Inventors: Soon Joon RHO, Hyunggeun YOON, Hyelim JANG, Hyeokjin LEE, Jung Wook KIM, Dong Han SONG, Tae Hoon YOON
  • Patent number: 8634043
    Abstract: A transflective liquid crystal display includes a liquid crystal panel including a first substrate, a second substrate, a liquid crystal layer, the first and second substrates arranged to face each other and the liquid crystal layer between the first and second substrates, a reflection polarizer and an absorption polarizer at opposing outer sides of the liquid crystal panel, and a backlight unit at an outer side of the liquid crystal panel and supplying light to the inside of the liquid crystal panel. A reflective axis of the reflection polarizer is parallel with a transmissive axis of the absorption polarizer, the transmissive axis of the reflection polarizer perpendicularly crosses the transmissive axis of the absorption polarize, and the liquid crystal layer includes liquid crystal molecules and a dichroic dye.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: January 21, 2014
    Assignees: Samsung Display Co., Ltd., Pusan National University Industry-University Cooperation Foundation
    Inventors: Byoung Ho Cheong, Jae-Ho You, Soon-Joon Rho, Jae-Chang Kim, Tae-Hoon Yoon, Ki-Han Kim, Hye-Jung Jin