Patents by Inventor Ku-Hyun Park

Ku-Hyun Park 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: 10204590
    Abstract: A pixel unit includes: a pixel electrode; a first switching unit, including a first gate electrode, a first source electrode and a first drain electrode which are electrically connected with a gate line, a first data line and the pixel electrode respectively; and a second switching unit, including a second gate electrode, a second source electrode and a second drain electrode which are electrically connected with the gate line, a second data line and the pixel electrode respectively. A difference value between a first jumping voltage and a second jumping voltage is in a range from ?0.5 to 0.5 volts, the first jumping voltage is a jumping voltage produced when the first switching unit is changed from an on state to an off state, and the second jumping voltage is a jumping voltage produced when the second switching unit is changed from the on state to the off state.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: February 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Ku Hyun Park
  • Patent number: 10140934
    Abstract: A pixel unit, a display device and a driving method thereof are provided. The display unit includes at least four sub-pixels, wherein three sub-pixels are polygonal, while the other at least one sub-pixel is disposed in a gap enclosed by the three polygonal sub-pixels.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: November 27, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaobin Yin, Ku Hyun Park, Dongling Sun
  • Patent number: 9983433
    Abstract: A transflective liquid crystal display (LCD) panel, a display device and an array substrate are disclosed. The display panel includes a first substrate, a second substrate arranged opposite to the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate and the second substrate include a transmissive area and a reflective area, and the cell gaps of the transmissive area and the reflective area are unequal to each other.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: May 29, 2018
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Ku Hyun Park
  • Patent number: 9740049
    Abstract: A liquid crystal display panel and a liquid crystal display device, the liquid crystal panel including a color filter sheet and a liquid crystal layer, an optical compensation film layer being disposed between the color filter sheet and the liquid crystal layer. With the optical compensation film layer inside the liquid crystal panel, contrast ratio is increased in a full-viewing-angle direction, and color shift in a diagonal direction of the liquid crystal pane is alleviated; further, the optical compensation film layer is provided on the color filter sheet of the liquid crystal panel, leading to a compact structure of the liquid crystal panel, reducing production costs and decreasing light leakage and mura phenomenon that are caused by light reflection and refraction; gray level, contrast ratio, color phase or the like of an LCD can be also improved.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: August 22, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Ji Jin, Ku Hyun Park
  • Publication number: 20170124978
    Abstract: A pixel unit includes: a pixel electrode; a first switching unit, including a first gate electrode, a first source electrode and a first drain electrode which are electrically connected with a gate line, a first data line and the pixel electrode respectively; and a second switching unit, including a second gate electrode, a second source electrode and a second drain electrode which are electrically connected with the gate line, a second data line and the pixel electrode respectively. A difference value between a first jumping voltage and a second jumping voltage is in a range from ?0.5 to 0.5 volts, the first jumping voltage is a jumping voltage produced when the first switching unit is changed from an on state to an off state, and the second jumping voltage is a jumping voltage produced when the second switching unit is changed from the on state to the off state.
    Type: Application
    Filed: July 13, 2016
    Publication date: May 4, 2017
    Inventor: Ku Hyun PARK
  • Publication number: 20160042704
    Abstract: A pixel unit, a display device and a driving method thereof are provided. The display unit includes at least four sub-pixels, wherein three sub-pixels are polygonal, while the other at least one sub-pixel is disposed in a gap enclosed by the three polygonal sub-pixels.
    Type: Application
    Filed: June 30, 2014
    Publication date: February 11, 2016
    Inventors: Xiaobin YIN, Ku Hyun PARK, Dongling SUN
  • Publication number: 20160011460
    Abstract: A transflective liquid crystal display (LCD) panel, a display device and an array substrate are disclosed. The display panel includes a first substrate, a second substrate arranged opposite to the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate and the second substrate include a transmissive area and a reflective area, and the cell gaps of the transmissive area and the reflective area are unequal to each other.
    Type: Application
    Filed: November 8, 2013
    Publication date: January 14, 2016
    Inventor: Ku Hyun PARK
  • Patent number: 9217818
    Abstract: A polarizer is provided comprising: a transparent substrate, on a main surface of which a plurality of grooves in parallel with each other are provided at an interval; a birefringence crystal layer with a single orientation formed on the main surface of the transparent substrate where the grooves are provided, wherein the birefringence crystal layer is at least filled in the grooves so that linearly polarized light incident on a location corresponding to the grooves and passing through the polarizer is converted into first polarized light, and linearly polarized light incident on a location between the grooves and passing through the polarizer is converted into second polarized light, the polarization directions of the first and the second polarized light are different from each other.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: December 22, 2015
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yun Bok Lee, Ku Hyun Park
  • Publication number: 20150261028
    Abstract: A liquid crystal display panel and a liquid crystal display device, the liquid crystal panel including a color filter sheet and a liquid crystal layer, an optical compensation film layer being disposed between the color filter sheet and the liquid crystal layer. With the optical compensation film layer inside the liquid crystal panel, contrast ratio is increased in a full-viewing-angle direction, and color shift in a diagonal direction of the liquid crystal pane is alleviated; further, the optical compensation film layer is provided on the color filter sheet of the liquid crystal panel, leading to a compact structure of the liquid crystal panel, reducing production costs and decreasing light leakage and mura phenomenon that are caused by light reflection and refraction; gray level, contrast ratio, color phase or the like of an LCD can be also improved.
    Type: Application
    Filed: August 22, 2013
    Publication date: September 17, 2015
    Inventors: Ji Jin, Ku Hyun Park
  • Patent number: 8368855
    Abstract: An LCD device adapted to implement a higher aperture ratio and to reduce its power consumption is disclosed. The LCD device includes: gate lines and data lines crossing each other to define pixel regions; a thin film transistor formed in each intersecting region of the gate lines and the data lines; a reflection electrode of plane shape, electrically connected to a drain electrode of the thin film transistor; a pixel electrode disposed in each of the pixel regions; and a common electrode having a slit structure, over the pixel electrode and the reflection electrode.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: February 5, 2013
    Assignee: LG Display Co. Ltd.
    Inventors: Ku Hyun Park, Jong Hwae Lee
  • Publication number: 20120162766
    Abstract: A polarizer is provided comprising: a transparent substrate, on a main surface of which a plurality of grooves in parallel with each other are provided at an interval; a birefringence crystal layer with a single orientation formed on the main surface of the transparent substrate where the grooves are provided, wherein the birefringence crystal layer is at least filled in the grooves so that linearly polarized light incident on a location corresponding to the grooves and passing through the polarizer is converted into first polarized light, and linearly polarized light incident on a location between the grooves and passing through the polarizer is converted into second polarized light, the polarization directions of the first and the second polarized light are different from each other.
    Type: Application
    Filed: December 23, 2011
    Publication date: June 28, 2012
    Applicants: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yun Bok LEE, Ku Hyun PARK
  • Patent number: 8189146
    Abstract: A transflective liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a pixel electrode. The first substrate has a thin film transistor and the second substrate has a color filter and faces the first substrate. The liquid crystal layer is disposed between the first and the second substrates. The pixel electrode is disposed above the first substrate and electrically connected to the thin film transistor. The transflective liquid crystal display device further includes a pixel region. The pixel region is divided into a transmit part and a reflective part, and the reflective part includes a first region and a second region. The pixel electrode extends to the transmit part and only the second region of the reflective part.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: May 29, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Ku Hyun Park, Jong Hwae Lee, Hyun Ho Kim
  • Patent number: 8179507
    Abstract: A liquid crystal display device includes: a first substrate including a transmission part and a reflection part; a common electrode disposed on the transmission part and the reflection part; a plurality of first pixel electrodes disposed on the transmission part and having a first electrode direction; a plurality of second pixel electrodes disposed on the reflection part and having a second electrode direction, the first electrode direction and the second electrode direction creating an acute angle; a second substrate facing the first substrate; and a liquid crystal layer interposed between the first and second substrates.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: May 15, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Ku Hyun Park, Hyun Ho Kim
  • Patent number: 8139187
    Abstract: A transflective type LCD device including a unit pixel region divided into reflective and transmitting parts includes first and second substrates facing each other, a pixel electrode in the pixel region of first substrate, a reflective sheet in the reflective part of first substrate, a common electrode on the second substrate, at least one first open pattern for forming multi-domains, and the first open pattern in at least one of the pixel and common electrodes, and a plurality of second open patterns for inducing a fringe field, and the second open patterns in the reflective part of at least one of the pixel and common electrodes.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: March 20, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hyeon Ho Son, Ku Hyun Park
  • Patent number: 8120734
    Abstract: A liquid crystal display device having first and second substrates that face each other, a liquid crystal layer interposed between the first and second substrates, a thin film transistor (TFT) formed on the first substrate, and a pixel electrode electrically connected with the TFT and including a reflective portion having a reflective electrode and a transmissive portion having a transmissive electrode. Furthermore, the reflective electrode includes a conductive polymer material.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: February 21, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Wook Lee, Ku-Hyun Park
  • Patent number: 8054282
    Abstract: A liquid crystal display device includes a temperature-sensing unit measuring at least one of a temperature of the liquid crystal display device and an ambient temperature of the liquid crystal display device, and outputting a frequency modulation signal corresponding to the measured temperature, a timing controller modulating a frequency of a clock signal based on the frequency modulation signal to generate a modulated clock signal, and treating a video data based on the modulated clock signal to generate a treated video data, and a display panel displaying an image based on the modulated clock signal and the treated video data, the display panel including a gate line, a data line crossing the gate line and a switching element connected to the gate line and the data line.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: November 8, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Su-Hyun Park, Ku-Hyun Park, Young-Nam Lim, Sang-Ho Choi, Jong-Hoon Woo
  • Publication number: 20110187972
    Abstract: A transflective liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a pixel electrode. The first substrate has a thin film transistor and the second substrate has a color filter and faces the first substrate. The liquid crystal layer is disposed between the first and the second substrates. The pixel electrode is disposed above the first substrate and electrically connected to the thin film transistor. The transflective liquid crystal display device further includes a pixel region. The pixel region is divided into a transmit part and a reflective part, and the reflective part includes a first region and a second region. The pixel electrode extends to the transmit part and only the second region of the reflective part.
    Type: Application
    Filed: March 9, 2011
    Publication date: August 4, 2011
    Inventors: Ku Hyun Park, Jong Hwae Lee, Hyun Ho Kim
  • Patent number: 7920234
    Abstract: A transflective liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a pixel electrode. The first substrate has a thin film transistor and the second substrate has a color filter and faces the first substrate. The liquid crystal layer is disposed between the first and the second substrates. The pixel electrode is disposed above the first substrate and electrically connected to the thin film transistor. The transflective liquid crystal display device further includes a pixel region. The pixel region is divided into a transmit part and a reflective part, and the reflective part includes a first region and a second region. The pixel electrode extends to the transmit part and only the second region of the reflective part.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: April 5, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Ku Hyun Park, Jong Hwae Lee, Hyun Ho Kim
  • Patent number: 7859626
    Abstract: A liquid crystal display includes: first and second substrates with a transmissive region and a reflective region defined thereon; a reflection layer formed at the reflective region of the first substrate; a liquid crystal layer formed between the first and second substrates; a common electrode formed on the second substrate; an alignment layer formed on the second substrate and rubbed in one direction; a pixel electrode formed on the first substrate to form an electric field together with the common electrode to drive the liquid crystal layer, and having at least one electric field controller to control the direction of the electric field; and a vertical alignment layer formed on the first substrate.
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: December 28, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Ku-Hyun Park, Jong-Hwae Lee
  • Publication number: 20100321620
    Abstract: A transflective type LCD device including a unit pixel region divided into reflective and transmitting parts includes first and second substrates facing each other, a pixel electrode in the pixel region of first substrate, a reflective sheet in the reflective part of first substrate, a common electrode on the second substrate, at least one first open pattern for forming multi-domains, and the first open pattern in at least one of the pixel and common electrodes, and a plurality of second open patterns for inducing a fringe field, and the second open patterns in the reflective part of at least one of the pixel and common electrodes.
    Type: Application
    Filed: July 19, 2010
    Publication date: December 23, 2010
    Inventors: Hyeon Ho SON, Ku Hyun Park