Patents by Inventor Back-Won Lee

Back-Won Lee 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: 8633884
    Abstract: A liquid crystal display having specific dispositions of pixels of a liquid crystal display so as to prevent the coupling defect and the stripe defect in high speed driving. The liquid crystal display includes a plurality of pixels arranged in a matrix shape, a switching element connected to each pixel, data lines and gate lines connected to the switching elements, and a data driver generating data voltages and applying the data voltages to the data lines. The data lines are disposed at both sides of the pixels in pairs, and data voltages of the same magnitude with different polarities are applied to the pairs of data lines. In this manner, preventing the coupling defect and the stripe defect, high speed driving can be performed.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: January 21, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Soo Baek, Dong-Gyu Kim, Back-Won Lee
  • Patent number: 8610179
    Abstract: An amorphous-silicon thin film transistor and a shift resister shift resister having the amorphous-silicon TFT include a first conductive region, a second conductive region and a third conductive region. The first conductive region is formed on a first plane spaced apart from a substrate by a first distance. The second conductive region is formed on a second plane spaced apart from the substrate by a second distance. The second conductive region includes a body conductive region and two hand conductive regions elongated from both ends of the body conductive region to form an U-shape. The third conductive region is formed on the second plane. The third conductive region includes an elongated portion. The elongated portion is disposed between the two hand conductive regions of the second conductive region. The amorphous-silicon TFT and the shift resister having the amorphous TFT reduce a parasitic capacitance between the gate electrode and drain electrode.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: December 17, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Hwan Moon, Back-Won Lee
  • Patent number: 8149366
    Abstract: A thin film transistor panel for a liquid crystal display includes a substrate, a plurality of data lines formed over the substrate and extending in a first direction, and a plurality of gate lines formed over the substrate and extending in a second direction. The plurality of gate lines cross the plurality of data lines to form a plurality of pixel areas, each of the plurality of pixel areas having a multi-bent band shape. Each of a plurality of pixel electrodes are formed in a corresponding pixel area.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: April 3, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Back-Won Lee
  • Patent number: 8102340
    Abstract: A driver circuit drives display device and LCD device has a driver circuit that includes driving stages and dummy stage. The driving stage includes output and control terminals. The output terminal of the present stage is connected to the control terminal of the previous state to be cascade-connected each other. The driving stage outputs driving signal for controlling the switching device arranged on the display device through the output terminal. The dummy stage includes dummy output terminal and dummy control terminal. The dummy output terminal is connected to the control terminal of the last driving stage to output dummy output signal for turning on or off the last driving stage. The dummy control terminal is connected to the dummy output terminal to be turned on or off by the dummy output signal. The delay of signals is reduced, thereby enhancing display quality.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: January 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Back-Won Lee, Seung-Hwan Moon
  • Publication number: 20110284850
    Abstract: An amorphous-silicon thin film transistor and a shift resister shift resister having the amorphous-silicon TFT include a first conductive region, a second conductive region and a third conductive region. The first conductive region is formed on a first plane spaced apart from a substrate by a first distance. The second conductive region is formed on a second plane spaced apart from the substrate by a second distance. The second conductive region includes a body conductive region and two hand conductive regions elongated from both ends of the body conductive region to form an U-shape. The third conductive region is formed on the second plane. The third conductive region includes an elongated portion. The elongated portion is disposed between the two hand conductive regions of the second conductive region. The amorphous-silicon TFT and the shift resister having the amorphous TFT reduce a parasitic capacitance between the gate electrode and drain electrode.
    Type: Application
    Filed: July 28, 2011
    Publication date: November 24, 2011
    Inventors: Seung-Hwan Moon, Back-Won Lee
  • Publication number: 20110241979
    Abstract: A liquid crystal display having specific dispositions of pixels of a liquid crystal display so as to prevent the coupling defect and the stripe defect in high speed driving. The liquid crystal display includes a plurality of pixels arranged in a matrix shape, a switching element connected to each pixel, data lines and gate lines connected to the switching elements, and a data driver generating data voltages and applying the data voltages to the data lines. The data lines are disposed at both sides of the pixels in pairs, and data voltages of the same magnitude with different polarities are applied to the pairs of data lines. In this manner, preventing the coupling defect and the stripe defect, high speed driving can be performed.
    Type: Application
    Filed: June 16, 2011
    Publication date: October 6, 2011
    Inventors: SEUNG-SOO BAEK, Dong-Gyu Kim, Back-Won Lee
  • Patent number: 8008690
    Abstract: An amorphous-silicon thin film transistor and a shift resister shift resister having the amorphous-silicon TFT include a first conductive region, a second conductive region and a third conductive region. The first conductive region is formed on a first plane spaced apart from a substrate by a first distance. The second conductive region is formed on a second plane spaced apart from the substrate by a second distance. The second conductive region includes a body conductive region and two hand conductive regions elongated from both ends of the body conductive region to form an U-shape. The third conductive region is formed on the second plane. The third conductive region includes an elongated portion. The elongated portion is disposed between the two hand conductive regions of the second conductive region. The amorphous-silicon TFT and the shift resister having the amorphous TFT reduce a parasitic capacitance between the gate electrode and drain electrode.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: August 30, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hwan Moon, Back-Won Lee
  • Patent number: 7944228
    Abstract: In a mother substrate for a lower substrate, a substrate for a display panel and a method of manufacturing a display panel, the substrate for the display panel includes a lower substrate and an upper substrate facing the lower substrate. The lower substrate includes an inspection line that receives a first inspection signal externally provided, a gate driving part that outputs a second inspection signal in response to the first inspection signal from the inspection line, and a pixel part driven in response to the second inspection signal. The inspection line is disposed on a grinding area. Thus, the display panel may have an enhanced productivity and an improved yield, on which the gate driving part is formed.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: May 17, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Back-Won Lee
  • Patent number: 7916234
    Abstract: A liquid crystal display (LCD) capable of preventing light leakage includes first and second gate lines which extend in a horizontal direction, a data line which is insulated from the first and second gate lines and crosses the first and second gate lines, first and second thin film transistors (TFTs) which are respectively connected to the first and second gate lines and are connected to the data line, and a pixel electrode which extends in zigzag fashion at an inclination to the first and second gate lines and is divided into a first area and a second area in a direction in which the pixel electrode extends.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: March 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-hyun Hur, Back-won Lee, Chae-woo Chung, Sahng-ik Jun, Kweon-sam Hong, Sang-gun Choi, Yong-woo Lee, Yong-jo Kim, Hyun-duck Son
  • Patent number: 7916225
    Abstract: Provided is a liquid crystal display (LCD) with enhanced display qualities. The LCD includes a first insulating substrate; a gate line disposed on the first insulating substrate and extending in a first direction; first and second data lines insulated from and crossing the gate line, separated from each other, and extending in a second direction; first and second thin film transistors (TFTs) connected to the gate line and the first and second data lines, respectively; first and second subpixel electrodes connected to the first and second TFTs, respectively; and first and second drain electrode connection portions connecting the first and second TFTs to the first and second subpixel electrodes, respectively. The first and second drain electrode connection portions are electrically insulated from each other and together form a substantially rectangular band.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: March 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hye-Seok Na, Sung-Jae Moon, Back-Won Lee, Seoung-Young Lee
  • Patent number: 7903207
    Abstract: A display substrate comprises a base substrate divided into a display region and a peripheral region surrounding the display region, wherein an image is displayed in the display region, a pixel part formed in the display region of the base substrate, a first color filter layer formed on the base substrate including the pixel part, wherein the first color filter layer is formed in the display region, and a second color filter layer formed in the peripheral region of the base substrate.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: March 8, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Back-Won Lee, Jeong-Il Kim, Hong-Woo Lee
  • Patent number: 7842951
    Abstract: A transistor includes a control electrode, a first current electrode and a second current electrode. The control electrode includes a body portion, and first and second hand portions protruded from first and second ends of the body portion, respectively. The first current electrode is electrically insulated from the control electrode and disposed over a region between the first and second hand portions of the control electrode. A portion of the first current electrode is overlapped with a portion of the control electrode. The second current electrode is electrically insulated from the control electrode and partially overlapped with the body portion, the first hand portion and the second hand portion of the control electrode. Therefore, parasitic capacitance is reduced.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: November 30, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Haeng-Won Park, Seung-Hwan Moon, Nam-Soo Kang, Yong-Soon Lee, Back-Won Lee
  • Patent number: 7705926
    Abstract: A liquid crystal display includes a substrate, a plurality of pixel electrodes formed on the substrate wherein each of the pixel electrodes includes first and second sub-pixel electrodes, and a plurality of first data lines formed on the substrate, wherein a first data line of the plurality of first data lines does not overlap a first sub-pixel electrode and partially overlaps a second sub-pixel electrode of a pixel electrode of the plurality of pixel electrodes.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: April 27, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Back-Won Lee, Seung-Soo Baek
  • Patent number: 7696974
    Abstract: In a shift register and LCD device having the shift register that may be employed in the liquid crystal display device having a large screen size and a large resolution, the shift register includes stages connected with each other and each of the stages have a carry buffer for generating a carry signal. The pull-down transistor of each of the stages of the shift register is divided into a first pull-down transistor and a second pull-down transistor. A power voltage Vona larger than the power voltage Von applied to a clock generator is applied to the shift register. A signal delay due to the RC delay of the gate lines may be minimized, the shift register is independent of the variation of the threshold voltage of the TFTs, and image display quality may not be deteriorated.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: April 13, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hwan Moon, Back-Won Lee
  • Patent number: 7675597
    Abstract: A thin film transistor panel for a liquid crystal display includes a substrate, a plurality of data lines formed over the substrate and extending in a first direction, and a plurality of gate lines formed over the substrate and extending in a second direction. The plurality of gate lines cross the plurality of data lines to form a plurality of pixel areas, each of the plurality of pixel areas having a multi-bent band shape. Each of a plurality of pixel electrodes are formed in a corresponding pixel area.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: March 9, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Back-Won Lee
  • Patent number: 7667806
    Abstract: A thin film transistor panel for a liquid crystal display includes a substrate, a plurality of data lines formed over the substrate and extending in a first direction, and a plurality of gate lines formed over the substrate and extending in a second direction. The plurality of gate lines cross the plurality of data lines to form a plurality of pixel areas, each of the plurality of pixel areas having a multi-bent band shape. Each of a plurality of pixel electrodes are formed in a corresponding pixel area.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: February 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Gyu Kim, Back-Won Lee
  • Publication number: 20100009479
    Abstract: A thin film transistor panel for a liquid crystal display includes a substrate, a plurality of data lines formed over the substrate and extending in a first direction, and a plurality of gate lines formed over the substrate and extending in a second direction. The plurality of gate lines cross the plurality of data lines to form a plurality of pixel areas, each of the plurality of pixel areas having a multi-bent band shape. Each of a plurality of pixel electrodes are formed in a corresponding pixel area.
    Type: Application
    Filed: September 22, 2009
    Publication date: January 14, 2010
    Inventors: Dong-Gyu KIM, Back-Won Lee
  • Patent number: 7646841
    Abstract: A shift register has multiple stages each of which includes a pull-up part to generate a current gate line driving signal having a first state in response to a first control signal and a clock signal, a pull-down part to generate the current gate line driving signal having a second state in response to a second control signal, a pull-up driver to generate the first control signal to control the pull-up part in response to a previous gate line driving signal provided from a previous stage, a following gate line driving signal provided from a following stage, and an input voltage signal externally provided, and a pull-down driver to generate the second control signal to control the pull-down part in response to a third control signal provided from the pull-up driver and the input voltage signal, in which the second control signal swings between first and second voltage levels in association with the input voltage signal that swings between predetermined voltage levels.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: January 12, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung-Hwan Moon, Nam-Soo Kang, Kyung-Eun Lee, Back-Won Lee, Ji-Hoon Kim
  • Publication number: 20090195745
    Abstract: In a mother substrate for a lower substrate, a substrate for a display panel and a method of manufacturing a display panel, the substrate for the display panel includes a lower substrate and an upper substrate facing the lower substrate. The lower substrate includes an inspection line that receives a first inspection signal externally provided, a gate driving part that outputs a second inspection signal in response to the first inspection signal from the inspection line, and a pixel part driven in response to the second inspection signal. The inspection line is disposed on a grinding area. Thus, the display panel may have an enhanced productivity and an improved yield, on which the gate driving part is formed.
    Type: Application
    Filed: April 9, 2009
    Publication date: August 6, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Back-Won LEE
  • Patent number: 7535027
    Abstract: An amorphous-silicon thin film transistor and a shift register shift having the amorphous-silicon TFT include a first conductive region, a second conductive region and a third conductive region. The first conductive region is formed on a first plane spaced apart from a substrate by a first distance. The second conductive region is formed on a second plane spaced apart from the substrate by a second distance. The second conductive region includes a body conductive region and two hand conductive regions elongated from both ends of the body conductive region to form an LI-shape. The third conductive region is formed on the second plane. The third conductive region includes an elongated portion. The elongated portion is disposed between the two hand conductive regions of the second conductive region. The amorphous-silicon TFT and the shift register having the amorphous TFT reduce a parasitic capacitance between the gate electrode and drain electrode.
    Type: Grant
    Filed: February 14, 2005
    Date of Patent: May 19, 2009
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Seung-Hwan Moon, Back-Won Lee