Patents by Inventor Joong-Sun Yoon

Joong-Sun Yoon 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: 10032410
    Abstract: Disclosed is a display apparatus. The display apparatus performs external compensation by using sensing data generated through actual sensing and calculation data which is calculated based on the sensing data with a median filter.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: July 24, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Shinji Takasugi, Joong Sun Yoon, Min Kyu Chang, Hyo Jin Park, Jeong Pyo Lee, Chang Woo Seok
  • Patent number: 9985084
    Abstract: A flat display device in which a semi-transparent non-display area is processed to be non-transparent for preventing a display area from being reduced and fabricating a thinner flat display device is disclosed. The flat display device includes a first substrate having a display area with a pixel matrix formed therein and a non-display area with a driving circuit for driving the pixel matrix formed therein, a second substrate bonded to the first substrate with sealant, and a light shielding layer formed on the second substrate for making the non-display area non-transparent.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: May 29, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Joong-Sun Yoon
  • Patent number: 9660090
    Abstract: An array substrate having a thin film transistor with an oxide semiconductor layer, wherein the thin film transistor is in a device area of a pixel region; the substrate comprising a light-shielding pattern on the array substrate in the device area; an auxiliary line connected to a light-shielding pattern and supplying a constant voltage to the light-shielding pattern, wherein the auxiliary line is parallel to and spaced apart from one of the gate and data lines; a buffer layer on the light-shielding pattern and a surface of the array substrate, wherein the oxide semiconductor layer is on the buffer layer and the light-shielding pattern; an inter-insulating layer on the buffer layer, wherein the oxide semiconductor layer includes an active portion located entirely on the light-shielding pattern and having a channel formed thereon, and conductive portions located on sides of the active portion.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 23, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Joong-Sun Yoon
  • Patent number: 9514685
    Abstract: A display device that may minimize voltage drop of a power source supplied to a pixel is disclosed. The display device comprises a power generator generating a driving power source; a display panel including a plurality of pixels, the display panel displaying images using the driving power source; and a printed circuit board having a power transfer line for transferring the driving power source output from the power generator to the display panel, wherein the power transfer line is provided in a closed-loop type.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: December 6, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Joong Sun Yoon, Sung Jin Hong, Dae Hyun Kim
  • Patent number: 9449552
    Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a panel in which a plurality of pixels are respectively formed in intersection areas between a plurality of gate lines and a plurality of data lines formed in an active area, a pixel circuit is included in each of the pixels, and a plurality of power lines are formed for supplying power to drive the pixel circuit; a gate driving IC configured to supply a scan signal to the gate lines, a power supply configured to supply the power to the power lines, a detection unit configured to detect a panel abnormality in the active area by using a sensing signal collected through a sensing line electrically connected to a corresponding gate line, and a controller configured to control driving of the power supply according to the detection result of the detection unit.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: September 20, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Ji Eun Lee, Joong Sun Yoon, Seon Mi Lee, Boeon Byeon
  • Patent number: 9391131
    Abstract: Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes: an emission unit including an organic light emitting diode, a pixel circuit unit including: a circuit configured to drive the emission unit, and a line configured to apply a signal to the circuit, and a light blocking layer covering the pixel circuit unit, and configured to block light input to the pixel circuit unit, and a repair part disposed in the light blocking layer, the repair part being configured for repairing the line when a defect occurs in a pixel that includes the pixel circuit unit.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 12, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Dong Choi, Sung Jin Hong, Soon Il Yun, Il Gi Jeong, Joong Sun Yoon, Kyungsu Lee, Seung-Yong Yang
  • Patent number: 9373280
    Abstract: An organic light emitting diode (OLED) display device and a method of driving the same are discussed. The method includes sensing a threshold voltage and mobility of a driving thin film transistor (TFT) included in each pixel using a sensing line connected per pixel and supplying the threshold voltage and the mobility to a timing controller in a measurement mode, by a data driver, and supplying image data input from an external source to the data driver by a timing controller, the timing controller adding and multiplying an offset value and gain value corresponding to the threshold voltage and mobility of the driving TFT, sensed by the data driver in the measurement mode, with the image data to compensate the image data, wherein the compensation of the image data includes varying a weight of the gain value according to luminance of the image data.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: June 21, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Joong-Sun Yoon, Young-Hak Lee
  • Publication number: 20160164050
    Abstract: Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes: an emission unit including an organic light emitting diode, a pixel circuit unit including: a circuit configured to drive the emission unit, and a line configured to apply a signal to the circuit, and a light blocking layer covering the pixel circuit unit, and configured to block light input to the pixel circuit unit, and a repair part disposed in the light blocking layer, the repair part being configured for repairing the line when a defect occurs in a pixel that includes the pixel circuit unit.
    Type: Application
    Filed: February 18, 2016
    Publication date: June 9, 2016
    Applicant: LG Display Co., Ltd.
    Inventors: Hee Dong CHOI, Sung Jin HONG, Soon Il YUN, Il Gi JEONG, Joong Sun YOON, Kyungsu LEE, Seung-Yong YANG
  • Patent number: 9281352
    Abstract: Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes: an emission unit including an organic light emitting diode, a pixel circuit unit including: a circuit configured to drive the emission unit, and a line configured to apply a signal to the circuit, and a light blocking layer covering the pixel circuit unit, and configured to block light input to the pixel circuit unit, and a repair part disposed in the light blocking layer, the repair part being configured for repairing the line when a defect occurs in a pixel that includes the pixel circuit unit.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: March 8, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Hee Dong Choi, Sung Jin Hong, Soon Il Yun, Il Gi Jeong, Joong Sun Yoon, Kyungsu Lee, Seung-Yong Yang
  • Publication number: 20160005354
    Abstract: Disclosed is a display apparatus. The display apparatus performs external compensation by using sensing data generated through actual sensing and calculation data which is calculated based on the sensing data with a median filter.
    Type: Application
    Filed: July 7, 2015
    Publication date: January 7, 2016
    Applicant: LG Display Co., Ltd.
    Inventors: Shinji Takasugi, Joong Sun Yoon, Min Kyu Chang, Hyo Jin Park, Jeong Pyo Lee, Chang Woo Seok
  • Patent number: 9218764
    Abstract: A display device according to an embodiment includes a display panel including a display area having pixel areas, and a non-display area surrounding the display area. The display area includes first power lines for providing a first power to the pixel areas. The display device further includes a driver electrically connected to the first power lines of the display panel. The driver includes a driving integrated circuit, signal output pads connected to the driving integrated circuit and configured to output signals, a power supply line disposed outside the signal output pads and configured to supply the first power, and power output pads connected to the power supply line and configured to output the first power from the power supply line to the first power lines, wherein the power output pads are alternatingly disposed with the signal output pads.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: December 22, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Joong-Sun Yoon, Soon-Il Yun
  • Publication number: 20150187959
    Abstract: An array substrate having a thin film transistor with an oxide semiconductor layer, comprising: gate and data lines formed on the array substrate and defining a pixel region, wherein the thin film transistor is located in a device area of the pixel region; a light-shielding pattern arranged on the array substrate in the device area; an auxiliary line connected to the light-shielding pattern and supplying a constant voltage to the light-shielding pattern, wherein the auxiliary line is parallel to and spaced apart from one of the gate and data lines; a buffer layer of an inorganic material and located on the light-shielding pattern and a surface of the array substrate, wherein the oxide semiconductor layer is located on the buffer layer and the light-shielding pattern; an inter-insulating layer on the buffer layer, wherein the oxide semiconductor layer includes an active portion located entirely on the light-blocking pattern and having a channel formed thereon, and conductive portions located on sides of the ac
    Type: Application
    Filed: October 20, 2014
    Publication date: July 2, 2015
    Inventor: Joong-Sun YOON
  • Publication number: 20150179106
    Abstract: A display device that may minimize voltage drop of a power source supplied to a pixel is disclosed. The display device comprises a power generator generating a driving power source; a display panel including a plurality of pixels, the display panel displaying images using the driving power source; and a printed circuit board having a power transfer line for transferring the driving power source output from the power generator to the display panel, wherein the power transfer line is provided in a closed-loop type.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 25, 2015
    Inventors: Joong Sun YOON, Sung Jin HONG, Dae Hyun KIM
  • Publication number: 20150123107
    Abstract: Provided are an organic light emitting display device and a method of manufacturing the same. The organic light emitting display device includes: an emission unit including an organic light emitting diode, a pixel circuit unit including: a circuit configured to drive the emission unit, and a line configured to apply a signal to the circuit, and a light blocking layer covering the pixel circuit unit, and configured to block light input to the pixel circuit unit, and a repair part disposed in the light blocking layer, the repair part being configured for repairing the line when a defect occurs in a pixel that includes the pixel circuit unit.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 7, 2015
    Applicant: LG Display Co., Ltd.
    Inventors: Hee Dong Choi, Sung Jin Hong, Soon Il Yun, Il Gi Jeong, Joong Sun Yoon, Kyungsu Lee, Seung-Yong Yang
  • Patent number: 8988329
    Abstract: Disclosed are an OLED display device and method for sensing characteristic parameters of pixel driving circuits. The display device includes a display panel including pixels each having a light emitting element and a pixel driving circuit for independently driving the light emitting element, and a characteristic parameter detecting unit for driving the pixel driving circuit of one of the plural pixels, which is a sensing pixel, sensing a voltage discharged in accordance with characteristics of a driving TFT in the pixel driving circuit of the sensing pixel, on a data line connected to the pixel driving circuit of the sensing pixel, among data lines connected to respective pixel driving circuits of the pixels, and detecting a threshold voltage (Vth) of the driving TFT and a deviation of a process characteristic parameter (k-parameter) of the driving TFT, using the measured voltage.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 24, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Joong-Sun Yoon, Seung-Tae Kim, Ji-Hyun Kang, Ji-Eun Lee
  • Publication number: 20140176524
    Abstract: Disclosed is an organic light emitting display device. The organic light emitting display device includes a panel in which a plurality of pixels are respectively formed in intersection areas between a plurality of gate lines and a plurality of data lines formed in an active area, a pixel circuit is included in each of the pixels, and a plurality of power lines are formed for supplying power to drive the pixel circuit; a gate driving IC configured to supply a scan signal to the gate lines, a power supply configured to supply the power to the power lines, a detection unit configured to detect a panel abnormality in the active area by using a sensing signal collected through a sensing line electrically connected to a corresponding gate line, and a controller configured to control driving of the power supply according to the detection result of the detection unit.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 26, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Ji Eun Lee, Joong Sun Yoon, Seon Mi Lee, Boeon Byeon
  • Publication number: 20140175977
    Abstract: A display device according to an embodiment includes a display panel including a display area having pixel areas, and a non-display area surrounding the display area. The display area includes first power lines for providing a first power to the pixel areas. The display device further includes a driver electrically connected to the first power lines of the display panel. The driver includes a driving integrated circuit, signal output pads connected to the driving integrated circuit and configured to output signals, a power supply line disposed outside the signal output pads and configured to supply the first power, and power output pads connected to the power supply line and configured to output the first power from the power supply line to the first power lines, wherein the power output pads are alternatingly disposed with the signal output pads.
    Type: Application
    Filed: June 26, 2013
    Publication date: June 26, 2014
    Inventors: Joong-Sun YOON, Soon-Il YUN
  • Publication number: 20140176625
    Abstract: An organic light emitting diode (OLED) display device and a method of driving the same are discussed. The method includes sensing a threshold voltage and mobility of a driving thin film transistor (TFT) included in each pixel using a sensing line connected per pixel and supplying the threshold voltage and the mobility to a timing controller in a measurement mode, by a data driver, and supplying image data input from an external source to the data driver by a timing controller, the timing controller adding and multiplying an offset value and gain value corresponding to the threshold voltage and mobility of the driving TFT, sensed by the data driver in the measurement mode, with the image data to compensate the image data, wherein the compensation of the image data includes varying a weight of the gain value according to luminance of the image data.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 26, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Joong-Sun YOON, Young-Hak LEE
  • Publication number: 20110109596
    Abstract: A flat display device in which a semi-transparent non-display area is processed to be non-transparent for preventing a display area from being reduced and fabricating a thinner flat display device is disclosed. The flat display device includes a first substrate having a display area with a pixel matrix formed therein and a non-display area with a driving circuit for driving the pixel matrix formed therein, a second substrate bonded to the first substrate with sealant, and a light shielding layer formed on the second substrate for making the non-display area non-transparent.
    Type: Application
    Filed: August 10, 2010
    Publication date: May 12, 2011
    Inventor: Joong-Sun Yoon