Patents by Inventor Hyung-Seok Jang

Hyung-Seok Jang 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: 20110194050
    Abstract: A liquid crystal display device and a method for driving the same are provided. The liquid crystal display device includes a first liquid crystal layer selectively driven by a first electric field in a first direction; and a second liquid crystal layer selectively driven a second electric field in a second direction, the second direction being different from the first direction.
    Type: Application
    Filed: April 15, 2011
    Publication date: August 11, 2011
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Patent number: 7982841
    Abstract: A liquid crystal display device employs a white sub-pixel among RGBW-4 sub-pixels as a view control component to realize a narrow viewing angle or a wide viewing angle in a fringe field switching mode. The LCD device comprises gate lines and data lines crossing each other to define RGBW sub-pixels on a first substrate, a thin film transistor formed at each crossing of the gate and data lines; a first common electrode in each region of the RGBW sub-pixels, a pixel electrode connected to the thin film transistor and insulated from the first common electrode, the pixel electrode having at least one slit, a second substrate attached to the first substrate, wherein the first and second substrate face each other with a liquid crystal layer interposed therebetween, and a second common electrode on the second substrate and corresponding to each W sub-pixel.
    Type: Grant
    Filed: April 12, 2010
    Date of Patent: July 19, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Patent number: 7948582
    Abstract: A liquid crystal display device and a method for driving the same are provided. The liquid crystal display device includes a first liquid crystal layer selectively driven by a first electric field in a first direction; and a second liquid crystal layer selectively driven a second electric field in a second direction, the second direction being different from the first direction.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: May 24, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Patent number: 7940358
    Abstract: Provided are an LCD device that can control a viewing angle freely and a manufacturing method thereof. The LCD device includes a first substrate, a second substrate, and an LC layer interposed between the first and second substrates. The LCD device further includes red, green, blue, and viewing angle controlling subpixels. These subpixels are driven in a VA mode. The red, green, and blue subpixels have a transflective structure. The viewing angle controlling subpixel has a transmissive or transflective structure.
    Type: Grant
    Filed: July 17, 2007
    Date of Patent: May 10, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Suk Jin, Hyung Seok Jang, Tae Han Kim
  • Patent number: 7924375
    Abstract: An in-plane switching mode liquid crystal display device includes a first substrate and a second substrate, gate lines and data lines intersecting each other on the first substrate and defining red, green, blue sub-pixels, and viewing angle controlling sub-pixels, thin film transistors at the intersections of the gate lines and the data lines, first pixel electrodes and first common electrodes spaced apart from each other and alternately disposed at the red, green, and blue sub-pixels, second pixel electrodes at the viewing angle controlling sub-pixels, second common electrodes on the second substrate and at positions corresponding to the second pixel electrodes, and a liquid crystal layer between the first substrate and the second substrate.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: April 12, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: In Jae Chung, Hyun Suk Jin, Hyung Seok Jang, Deuk Su Lee
  • Patent number: 7903063
    Abstract: Provided is a liquid crystal panel that limits a viewing angle. The liquid crystal panel includes a plurality of color pixels and a plurality of interference sub-pixels. Each of the color pixels includes red (R), green (G) and blue (B) sub-pixels. The interference sub-pixels are included in each of the color pixels and disposed on the same plane as the color pixels to control light that penetrates the liquid crystal panel and travels in side directions of the liquid crystal panel, except the front direction thereof. The viewing angle can be controlled by the interference sub-pixels. Since the interference sub-pixels and the color sub-pixels are disposed on the same plane, the thickness and weight of the liquid crystal panel do not increase. Further, it is possible to prevent the decrease of the light quantity and the degradation of the brightness.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: March 8, 2011
    Assignee: LG. Display Co., Ltd.
    Inventors: In Jae Chung, Hyung Seok Jang, Hyun Suk Jin, Joon Kyu Park, Sook Kyung You
  • Patent number: 7800570
    Abstract: An LCD device is disclosed in which the LCD device is driven in an FFS mode and a VAC mode during a frame frequency period to obtain a narrow viewing angle. The method for driving the LCD device includes driving the LCD device in an FFS mode during a frame frequency period to obtain a wide viewing angle, and driving the LCD device in both the FFS mode and a VAC mode during the frame frequency period by dividing the frame frequency period, thereby obtaining a narrow viewing angle.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: September 21, 2010
    Assignee: LG. Display Co., Ltd.
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Publication number: 20100197189
    Abstract: A liquid crystal display device employs a white sub-pixel among RGBW-4 sub-pixels as a view control component to realize a narrow viewing angle or a wide viewing angle in a fringe field switching mode. The LCD device comprises gate lines and data lines crossing each other to define RGBW sub-pixels on a first substrate, a thin film transistor formed at each crossing of the gate and data lines; a first common electrode in each region of the RGBW sub-pixels, a pixel electrode connected to the thin film transistor and insulated from the first common electrode, the pixel electrode having at least one slit, a second substrate attached to the first substrate, wherein the first and second substrate face each other with a liquid crystal layer interposed therebetween, and a second common electrode on the second substrate and corresponding to each W sub-pixel.
    Type: Application
    Filed: April 12, 2010
    Publication date: August 5, 2010
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Patent number: 7760303
    Abstract: A liquid crystal display device includes a first substrate; a second substrate facing the first substrate; a liquid crystal layer interposed between the first and second substrates; first, second, third, and fourth sub-pixels defined on the first and second substrates; a first electric field distorting pattern on the first, second and third sub-pixels on the first substrate; a second electric field distorting pattern on the first, second and third sub-pixels on the second substrate; a third electric field distorting pattern on the fourth sub-pixel on the first substrate; and a fourth electric field distorting pattern on the fourth sub-pixel on the second substrate, wherein the first and second electric field distorting patterns are parallel to each other, and wherein the third and fourth electric field distorting patterns are parallel to each other at an angle that is different than that of the first and second distorting patterns.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: July 20, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung-Seok Jang, In-Jae Chung, Joon-Kyu Park, Hyun-Suk Jin
  • Publication number: 20100141569
    Abstract: A liquid crystal display device includes first and second substrates facing each other, a layer of liquid crystal molecules interposed between the first and second substrates, a plurality of color displaying sub-pixels including first, second and third sub-pixels defined on the first and second substrates, first common electrodes in the first, second and third sub-pixels on the first substrate, first pixel electrodes in the first, second and third sub-pixels on the first substrate and alternately arranged with the first common electrodes, color filter layers in the first, second and third sub-pixels on the second substrate, a plurality of viewing angle restricting sub-pixels including fourth, fifth and sixth sub-pixels defined on the first and second substrates, the fourth, fifth and sixth sub-pixels corresponding one-to-one with the first, second and third sub-pixels, second pixel electrodes in the fourth, fifth and sixth sub-pixels on the first substrate, and second common electrodes in the fourth, fifth an
    Type: Application
    Filed: February 17, 2010
    Publication date: June 10, 2010
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hyung-Seok JANG, Joon-Kyu PARK, Hyun-Suk JIN
  • Patent number: 7728941
    Abstract: A liquid crystal display device employs a white sub-pixel among RGBW-4 sub-pixels as a view control component to realize a narrow viewing angle or a wide viewing angle in a fringe field switching mode. The LCD device comprises gate lines and data lines crossing each other to define RGBW sub-pixels on a first substrate, a thin film transistor formed at each crossing of the gate and data lines; a first common electrode in each region of the RGBW sub-pixels, a pixel electrode connected to the thin film transistor and insulated from the first common electrode, the pixel electrode having at least one slit, a second substrate attached to the first substrate, wherein the first and second substrate face each other with a liquid crystal layer interposed therebetween, and a second common electrode on the second substrate and corresponding to each W sub-pixel.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: June 1, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Patent number: 7692750
    Abstract: A liquid crystal display device includes first and second substrates facing each other, a layer of liquid crystal molecules interposed between the first and second substrates, a plurality of color displaying sub-pixels including first, second and third sub-pixels defined on the first and second substrates, first common electrodes in the first, second and third sub-pixels on the first substrate, first pixel electrodes in the first, second and third sub-pixels on the first substrate and alternately arranged with the first common electrodes, color filter layers in the first, second and third sub-pixels on the second substrate, a plurality of viewing angle restricting sub-pixels including fourth, fifth and sixth sub-pixels defined on the first and second substrates, the fourth, fifth and sixth sub-pixels corresponding one-to-one with the first, second and third sub-pixels, second pixel electrodes in the fourth, fifth and sixth sub-pixels on the first substrate, and second common electrodes in the fourth, fifth an
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: April 6, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung-Seok Jang, Joon-Kyu Park, Hyun-Suk Jin
  • Publication number: 20090310045
    Abstract: A liquid crystal display device includes first and second substrates facing and spaced apart from each other, each of the first and second substrates having a first sub-pixel region, a second sub-pixel region, a third sub-pixel region, a fourth sub-pixel region and a fifth sub-pixel region for adjusting a viewing angle, the first, second, third and fourth sub-pixel regions surrounding the fifth sub-pixel region; a liquid crystal layer between the first and second substrates; a plurality of first pixel electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate; a plurality of first common electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate, the plurality of first common electrodes alternating with the plurality of first pixel electrodes; a second pixel electrode in the fifth sub-pixel region on the first substrate; and a second common electrode in the fifth sub-pixel region on the second substrate, the second common electrod
    Type: Application
    Filed: August 24, 2009
    Publication date: December 17, 2009
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Joon-Kyu Park, Hyun-Suk Jin, Hyung-Seok Jang
  • Patent number: 7626656
    Abstract: A liquid crystal display (LCD) device for switching a display mode between a wide viewing angle and a narrow viewing angle includes an LCD panel including an array substrate, a color filter substrate, and a liquid crystal layer formed between inner surfaces of the array substrate and the color filter substrate, and a viewing angle control cell adjacent to the LCD panel, the viewing angle control cell including a lower substrate on which a first electrode is formed, an upper substrate on which a second electrode is formed, and a dichroic liquid crystal layer interposed between the upper substrate and the lower substrate.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: December 1, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung-Seok Jang, Hyun-Suk Jin
  • Patent number: 7605892
    Abstract: A liquid crystal display (LCD) device for switching a display mode between wide and narrow viewing angle, and a method for fabricating the same, is presented. The LCD device has an LCD panel and a viewing angle control cell. The LCD panel has array and color filter substrates and a liquid crystal layer formed between the substrates. The viewing angle control cell contains a lower substrate that contacts the LCD panel and has a first electrode, an upper substrate having a second electrode, and a ferroelectric liquid crystal layer between the upper and lower substrates. The viewing angle control cell switches the LCD device between wide and narrow viewing angle modes when driven.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: October 20, 2009
    Assignee: LG. Display Co., Ltd.
    Inventors: Hyung-Seok Jang, Hyun-Suk Jin
  • Patent number: 7599035
    Abstract: A liquid crystal display device includes first and second substrates facing and spaced apart from each other, each of the first and second substrates having a first sub-pixel region, a second sub-pixel region, a third sub-pixel region, a fourth sub-pixel region and a fifth sub-pixel region for adjusting a viewing angle, the first, second, third and fourth sub-pixel regions surrounding the fifth sub-pixel region; a liquid crystal layer between the first and second substrates; a plurality of first pixel electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate; a plurality of first common electrodes in each of the first, second, third and fourth sub-pixel regions on the first substrate, the plurality of first common electrodes alternating with the plurality of first pixel electrodes; a second pixel electrode in the fifth sub-pixel region on the first substrate; and a second common electrode in the fifth sub-pixel region on the second substrate, the second common electrod
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: October 6, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Joon-Kyu Park, Hyun-Suk Jin, Hyung-Seok Jang
  • Patent number: 7542109
    Abstract: A liquid crystal display (LCD) device is switchable between a wide viewing angle display mode and a narrow viewing angle display mode. The LCD device includes and LCD panel having an array substrate, a color filter substrate, and a liquid crystal layer disposed between the array substrate and the color filter substrate and a viewing angle control cell disposed adjacent to the LCD panel. The viewing angle control cell has first and second substrates, first and second electrodes disposed between the first and second substrates, an insulating layer disposed between the first and second electrodes, and a sheet layer having pigments disposed between the first and second substrates.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: June 2, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Hyung-Seok Jang, Hyun-Suk Jin
  • Publication number: 20080143911
    Abstract: Provided are an LCD device that can control a viewing angle freely and a manufacturing method thereof. The LCD device includes a first substrate, a second substrate, and an LC layer interposed between the first and second substrates. The LCD device further includes red, green, blue, and viewing angle controlling subpixels. These subpixels are driven in a VA mode. The red, green, and blue subpixels have a transflective structure. The viewing angle controlling subpixel has a transmissive or transflective structure.
    Type: Application
    Filed: July 17, 2007
    Publication date: June 19, 2008
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventors: Hyun Suk Jin, Hyung Seok Jang, Tae Han Kim
  • Publication number: 20080143930
    Abstract: A liquid crystal display device and a method of manufacturing the liquid crystal device are disclosed. The liquid crystal display device includes a red subpixel, a green subpixel, a blue subpixel, and a viewing angle controlling subpixel. The red, green, and blue subpixels are driven in a TN method, and the viewing angle controlling subpixel is driven in an ECB method. Therefore, the liquid crystal display device provides flexibility in a security range to a user, and not only can be used for one person but also can be used for two or more persons to view an image of high quality without inconvenience while securing security.
    Type: Application
    Filed: December 17, 2007
    Publication date: June 19, 2008
    Inventors: Hyun Suk Jin, Hyung Seok Jang
  • Publication number: 20080001849
    Abstract: A dual-view liquid crystal display device includes a display panel to display images; and a switching panel including first and second regions, the first and second regions controlled to represent a single image or different images displayed on the display panel, wherein a line width of the first region is adjustable. And, a method for driving a dual-view display device includes dividing the images displayed on the display panel in different directions by controlling a switching panel that includes first and second regions; and adjusting a line width of the first region in accordance with a viewing angle of a user.
    Type: Application
    Filed: December 6, 2006
    Publication date: January 3, 2008
    Inventors: Hyun Suk Jin, Ho Jin Ryu, Sun Hwa Lee, Hyung Seok Jang