Patents by Inventor Hee Kwang Kang

Hee Kwang Kang 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: 11963439
    Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, power efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: April 16, 2024
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Eun-Joung Choi, Young-Kwang Kim, Su-Hyun Lee, So-Young Jung, YeJin Jeon, Hong-Se Oh, Dong-Hyung Lee, Jin-Man Kim, Hyun-Woo Kang, Mi-Ja Lee, Hee-Ryong Kang, Hyo-Nim Shin, Jeong-Hwan Jeon, Sang-Hee Cho
  • Patent number: 9349322
    Abstract: An organic light emitting diode (OLED) display device includes a substrate including a circular arc portion and a driving circuit connecting portion connected to the top of the circular arc portion. A circular display area is formed in the circular arc portion. The display area includes a number of OLED pixels, where each OLED pixel connected to one of a number of power lines. A driving power supply line provides a driving voltage for the OLED pixels. The driving power supply line includes a circular shape and is formed around the display area. A number of power sharing lines extend from a lower area of the driving power supply line, where each of the power sharing lines is connected to a different subset of the power lines.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: May 24, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Nak Woo Kim, Hee Kwang Kang, Dae Sung Jung
  • Publication number: 20160027380
    Abstract: An organic light emitting diode (OLED) display device includes a substrate including a circular arc portion and a driving circuit connecting portion connected to the top of the circular arc portion. A circular display area is formed in the circular arc portion. The display area includes a number of OLED pixels, where each OLED pixel connected to one of a number of power lines. A driving power supply line provides a driving voltage for the OLED pixels. The driving power supply line includes a circular shape and is formed around the display area. A number of power sharing lines extend from a lower area of the driving power supply line, where each of the power sharing lines is connected to a different subset of the power lines.
    Type: Application
    Filed: July 23, 2015
    Publication date: January 28, 2016
    Inventors: Nak Woo KIM, Hee Kwang KANG, Dae Sung JUNG
  • Patent number: 9092097
    Abstract: A touch panel includes a substrate comprising divided regions; first electrodes, each of the first electrodes comprising first rhombus patterns spaced apart a predetermined distance from each other in a predetermined first direction and first connection patterns configured to connect the first rhombus patterns second electrodes, each of the second electrodes comprising second rhombus patterns spaced apart a predetermined distance from each other in the second direction and second connection patterns configured to connect the second rhombus patterns; third electrodes formed in border areas between the divided regions and outer areas of the divided regions; a touch controller formed in each of the divided regions correspondingly; and pad electrodes connected with the touch controller.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: July 28, 2015
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hee-Kwang Kang, Deuk-Su Lee, Su-Chang An, Sung-Su Han
  • Patent number: 8624821
    Abstract: Disclosed is a liquid crystal display device, a fabricating method, and a driving method thereof that includes at least one integrated photosensor that senses external light illumination on the liquid crystal display device. A sensing signal from the at least one photosensors are converted into a digital signal that is stored to represent an external illumination distribution. The liquid crystal display device includes a backlight that has a plurality of light sources that may be independently driven. A controller generates a control signal that independently drives the light sources in a manner corresponding to the illumination distribution. In doing so, areas of the liquid crystal display device may be provided with a greater amount of light from a corresponding light source so that externally illuminated areas of the liquid crystal display device do not suffer from reduced contrast.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: January 7, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kwang Kang, Kyo Seop Choo
  • Patent number: 8524516
    Abstract: A liquid crystal display device includes a liquid crystal panel divided into a non-display area and a display area where pixel cells are arranged in a matrix, a backlight for supplying light to the liquid crystal panel, and a photo-sensing device in the non-display area for sensing an external light to control light output from the backlight in accordance with the sensed the external light.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: September 3, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kwang Kang, Kyo Seop Choo
  • Patent number: 8310435
    Abstract: A liquid crystal display device includes a liquid crystal display panel including a first substrate having a display region and a non-display region, a liquid crystal layer, and a second substrate; a backlight unit opposite a surface of the first substrate that illuminates light onto the liquid crystal display panel; a plurality of gate lines arranged to cross a plurality of data lines on the first substrate; a plurality of first and second sensor lines substantially parallel to the data lines; a plurality of first sensors at crossings of the gate lines and the first sensor lines in a first region of the first substrate to sense ambient light; and a plurality of second sensors at crossings of the gate lines and the second sensor lines in a second region of the first substrate to sense light from the backlight unit.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: November 13, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kwang Kang, Kyo Seop Choo
  • Patent number: 8154504
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a backlight unit, a first sensor, and a second sensor. The liquid crystal display panel includes a first substrate divided into a display region and a non-display region including a first region and a second region, a liquid crystal layer, and a second substrate. The backlight unit is disposed opposite a surface of the first substrate to emit light onto the liquid crystal display panel. The first sensor is disposed in the first region to sense ambient light, and the second sensor is disposed in the second region to sense light emitted from the backlight unit.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: April 10, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kwang Kang, Kyo Seop Choo
  • Patent number: 8045129
    Abstract: A display device includes a plurality of gate lines and a plurality of data lines crossing each other on a first substrate, to define a pixel; a first thin film transistor in a portion where the gate lines and the data lines cross each other; a plurality of position detection lines on the first substrate, the position detection lines spaced a constant distance from the data lines and crossing the gate lines; a second thin film transistor for detecting a position, in a portion on the first substrate where the gate lines and the position detection lines cross each other; a protrusion pattern protruding from a second substrate and corresponding to a drain electrode of the second thin film transistor; and a transparent conductive layer on the protrusion pattern, electrically connected to the drain electrode when touching.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: October 25, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kwang Kang, Jun Hyeok Yu, Mi Young Do, Il Ho Kim
  • Publication number: 20110187954
    Abstract: A liquid crystal display device includes a liquid crystal panel divided into a non-display area and a display area where pixel cells are arranged in a matrix, a backlight for supplying light to the liquid crystal panel, and a photo-sensing device in the non-display area for sensing an external light to control light output from the backlight in accordance with the sensed the external light.
    Type: Application
    Filed: April 13, 2011
    Publication date: August 4, 2011
    Inventors: Hee Kwang KANG, Kyo Seop Choo
  • Publication number: 20110141040
    Abstract: A touch panel includes a substrate comprising divided regions; first electrodes, each of the first electrodes comprising first rhombus patterns spaced apart a predetermined distance from each other in a predetermined first direction and first connection patterns configured to connect the first rhombus patterns second electrodes, each of the second electrodes comprising second rhombus patterns spaced apart a predetermined distance from each other in the second direction and second connection patterns configured to connect the second rhombus patterns; third electrodes formed in border areas between the divided regions and outer areas of the divided regions; a touch controller formed in each of the divided regions correspondingly; and pad electrodes connected with the touch controller.
    Type: Application
    Filed: October 7, 2010
    Publication date: June 16, 2011
    Inventors: Hee-Kwang KANG, Deuk-Su Lee, Su-Chang An, Sung-Su Han
  • Patent number: 7948471
    Abstract: A liquid crystal device and method for displaying and sensing images are provided. According to one embodiment, the liquid crystal device includes a sensing part to sense an image in a scan mode of the liquid crystal device, the sensing part including at least one charging element which is charged at a start of the scan mode with a reset voltage, so as to reset the at least one charging element for the scan mode; and a display part to display an image corresponding to a data signal according to a scan signal in a display mode of the liquid crystal device.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: May 24, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Kyo-Seop Choo, Yeon-Sun Kim, Hee-Kwang Kang
  • Patent number: 7944429
    Abstract: A liquid crystal display device includes a liquid crystal panel divided into a non-display area and a display area where pixel cells are arranged in a matrix, a backlight for supplying light to the liquid crystal panel, and a photo-sensing device in the non-display area for sensing an external light to control light output from the backlight in accordance with the sensed the external light.
    Type: Grant
    Filed: March 23, 2006
    Date of Patent: May 17, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kwang Kang, Kyo Seop Choo
  • Patent number: 7943405
    Abstract: A liquid crystal display panel and a fabricating method thereof comprising an image sensing capability, image scanning, and touch inputting. In the liquid crystal display device, a gate line and a data line are formed to intersect each other on a substrate to define a pixel area in which a pixel electrode is positioned. A first thin film transistor is positioned at an intersection area of the gate line and the data line. A sensor thin film transistor senses light having image information and supplied with a first driving voltage from the data line. A driving voltage supply line is positioned in parallel to the gate line to supply a second driving voltage to the sensor thin film transistor.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: May 17, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kwang Kang, Kyo Seop Choo
  • Publication number: 20100231495
    Abstract: A liquid crystal display panel and a fabricating method thereof comprising an image sensing capability, image scanning, and touch inputting. In the liquid crystal display device, a gate line and a data line are formed to intersect each other on a substrate to define a pixel area in which a pixel electrode is positioned. A first thin film transistor is positioned at an intersection area of the gate line and the data line. A sensor thin film transistor senses light having image information and supplied with a first driving voltage from the data line. A driving voltage supply line is positioned in parallel to the gate line to supply a second driving voltage to the sensor thin film transistor.
    Type: Application
    Filed: May 20, 2010
    Publication date: September 16, 2010
    Inventors: Hee Kwang KANG, Kyo Seop CHOO
  • Patent number: 7741646
    Abstract: A liquid crystal display panel and a fabricating method thereof comprising an image sensing capability, image scanning, and touch inputting. In the liquid crystal display device, a gate line and a data line are formed to intersect each other on a substrate to define a pixel area in which a pixel electrode is positioned. A first thin film transistor is positioned at an intersection area of the gate line and the data line. A sensor thin film transistor senses light having image information and supplied with a first driving voltage from the data line. A driving voltage supply line is positioned in parallel to the gate line to supply a second driving voltage to the sensor thin film transistor.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: June 22, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Kwang Kang, Kyo Seop Choo
  • Publication number: 20090279013
    Abstract: A display device includes a plurality of gate lines and a plurality of data lines crossing each other on a first substrate, to define a pixel; a first thin film transistor in a portion where the gate lines and the data lines cross each other; a plurality of position detection lines on the first substrate, the position detection lines spaced a constant distance from the data lines and crossing the gate lines; a second thin film transistor for detecting a position, in a portion on the first substrate where the gate lines and the position detection lines cross each other; a protrusion pattern protruding from a second substrate and corresponding to a drain electrode of the second thin film transistor; and a transparent conductive layer on the protrusion pattern, electrically connected to the drain electrode when touching.
    Type: Application
    Filed: December 15, 2008
    Publication date: November 12, 2009
    Inventors: Hee Kwang Kang, Jun Hyeok Yu, Mi Young Do, II Ho Kim
  • Patent number: 7580084
    Abstract: A liquid crystal display device includes a gate line and a data line intersecting each other on a substrate. The liquid crystal display device further includes a photo sensing device and a first thin film transistor (“TFT”) located at an intersection area of the gate line. The photo sensing device operates to sense an ambient light and includes a storage capacitor to store charge generated by light. The photo sensing device is drive by a driving voltage other than the data voltage.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: August 25, 2009
    Assignee: LG. Display Co., Ltd.
    Inventors: Sang Hee Yu, Sang Chul Han, Hee Kwang Kang, Kyo Seop Choo
  • Publication number: 20070296685
    Abstract: Disclosed is a liquid crystal display device, a fabricating method, and a driving method thereof that includes at least one integrated photosensor that senses external light illumination on the liquid crystal display device. A sensing signal from the at least one photosensors are converted into a digital signal that is stored to represent an external illumination distribution. The liquid crystal display device includes a backlight that has a plurality of light sources that may be independently driven. A controller generates a control signal that independently drives the light sources in a manner corresponding to the illumination distribution. In doing so, areas of the liquid crystal display device may be provided with a greater amount of light from a corresponding light source so that externally illuminated areas of the liquid crystal display device do not suffer from reduced contrast.
    Type: Application
    Filed: December 12, 2006
    Publication date: December 27, 2007
    Inventors: Hee Kwang Kang, Kyo Seop Choo
  • Publication number: 20070152952
    Abstract: A liquid crystal display device includes a liquid crystal display panel including a first substrate having a display region and a non-display region, a liquid crystal layer, and a second substrate; a backlight unit opposite a surface of the first substrate that illuminates light onto the liquid crystal display panel; a plurality of gate lines arranged to cross a plurality of data lines on the first substrate; a plurality of first and second sensor lines substantially parallel to the data lines; a plurality of first sensors at crossings of the gate lines and the first sensor lines in a first region of the first substrate to sense ambient light; and a plurality of second sensors at crossings of the gate lines and the second sensor lines in a second region of the first substrate to sense light from the backlight unit.
    Type: Application
    Filed: December 14, 2006
    Publication date: July 5, 2007
    Inventors: Hee Kwang Kang, Kyo Seop Choo