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).
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Patent number: 11963439Abstract: 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: GrantFiled: August 24, 2022Date of Patent: April 16, 2024Assignee: 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
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Patent number: 9349322Abstract: 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: GrantFiled: July 23, 2015Date of Patent: May 24, 2016Assignee: LG DISPLAY CO., LTD.Inventors: Nak Woo Kim, Hee Kwang Kang, Dae Sung Jung
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Publication number: 20160027380Abstract: 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: ApplicationFiled: July 23, 2015Publication date: January 28, 2016Inventors: Nak Woo KIM, Hee Kwang KANG, Dae Sung JUNG
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Patent number: 9092097Abstract: 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: GrantFiled: October 7, 2010Date of Patent: July 28, 2015Assignee: LG DISPLAY CO., LTD.Inventors: Hee-Kwang Kang, Deuk-Su Lee, Su-Chang An, Sung-Su Han
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Patent number: 8624821Abstract: 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: GrantFiled: December 12, 2006Date of Patent: January 7, 2014Assignee: LG Display Co., Ltd.Inventors: Hee Kwang Kang, Kyo Seop Choo
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Patent number: 8524516Abstract: 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: GrantFiled: April 13, 2011Date of Patent: September 3, 2013Assignee: LG Display Co., Ltd.Inventors: Hee Kwang Kang, Kyo Seop Choo
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Patent number: 8310435Abstract: 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: GrantFiled: December 14, 2006Date of Patent: November 13, 2012Assignee: LG Display Co., Ltd.Inventors: Hee Kwang Kang, Kyo Seop Choo
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Patent number: 8154504Abstract: 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: GrantFiled: December 14, 2006Date of Patent: April 10, 2012Assignee: LG Display Co., Ltd.Inventors: Hee Kwang Kang, Kyo Seop Choo
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Patent number: 8045129Abstract: 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: GrantFiled: December 15, 2008Date of Patent: October 25, 2011Assignee: LG Display Co., Ltd.Inventors: Hee Kwang Kang, Jun Hyeok Yu, Mi Young Do, Il Ho Kim
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Publication number: 20110187954Abstract: 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: ApplicationFiled: April 13, 2011Publication date: August 4, 2011Inventors: Hee Kwang KANG, Kyo Seop Choo
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Publication number: 20110141040Abstract: 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: ApplicationFiled: October 7, 2010Publication date: June 16, 2011Inventors: Hee-Kwang KANG, Deuk-Su Lee, Su-Chang An, Sung-Su Han
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Patent number: 7948471Abstract: 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: GrantFiled: April 17, 2006Date of Patent: May 24, 2011Assignee: LG Display Co., Ltd.Inventors: Kyo-Seop Choo, Yeon-Sun Kim, Hee-Kwang Kang
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Patent number: 7944429Abstract: 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: GrantFiled: March 23, 2006Date of Patent: May 17, 2011Assignee: LG Display Co., Ltd.Inventors: Hee Kwang Kang, Kyo Seop Choo
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Patent number: 7943405Abstract: 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: GrantFiled: May 20, 2010Date of Patent: May 17, 2011Assignee: LG Display Co., Ltd.Inventors: Hee Kwang Kang, Kyo Seop Choo
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Publication number: 20100231495Abstract: 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: ApplicationFiled: May 20, 2010Publication date: September 16, 2010Inventors: Hee Kwang KANG, Kyo Seop CHOO
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Patent number: 7741646Abstract: 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: GrantFiled: June 13, 2006Date of Patent: June 22, 2010Assignee: LG Display Co., Ltd.Inventors: Hee Kwang Kang, Kyo Seop Choo
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Publication number: 20090279013Abstract: 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: ApplicationFiled: December 15, 2008Publication date: November 12, 2009Inventors: Hee Kwang Kang, Jun Hyeok Yu, Mi Young Do, II Ho Kim
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Patent number: 7580084Abstract: 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: GrantFiled: August 19, 2005Date of Patent: August 25, 2009Assignee: LG. Display Co., Ltd.Inventors: Sang Hee Yu, Sang Chul Han, Hee Kwang Kang, Kyo Seop Choo
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Publication number: 20070296685Abstract: 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: ApplicationFiled: December 12, 2006Publication date: December 27, 2007Inventors: Hee Kwang Kang, Kyo Seop Choo
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Publication number: 20070152952Abstract: 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: ApplicationFiled: December 14, 2006Publication date: July 5, 2007Inventors: Hee Kwang Kang, Kyo Seop Choo