Patents by Inventor Yoon-Hwan Woo

Yoon-Hwan Woo 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: 10031626
    Abstract: A display device with an integrated touch screen includes a panel including m (m is a natural number) electrodes and m lines; a display driver IC applying a common voltage to the m electrodes; and a touch IC generating a touch scan signal to apply the touch scan signal to the m electrodes and receiving touch sensing signals according to the touch scan signal to detect a location of a touch input on the panel, wherein at least one of the m electrodes includes touch electrode portions and non-touch electrode portions.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: July 24, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Yoon-Hwan Woo, Hee-Sun Shin
  • Patent number: 9575583
    Abstract: A touch display device includes a display panel, a conductive layer disposed on the display panel, a touch electrode disposed adjacent to the conductive layer and on the display panel, a routing line coupled to the touch electrode, and a polarizer disposed on the touch electrode and the conductive layer, where the conductive layer and the touch electrode are formed of the same material.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: February 21, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yoon-Hwan Woo, Min-Ho Na, Sun-Jung Lee, Sang-Soo Hwang
  • Patent number: 9568760
    Abstract: Disclosed are an in-cell touch liquid crystal display (LCD) apparatus having a pixel electrode top structure and a method of manufacturing the same. The in-cell touch LCD apparatus is implemented in the pixel electrode top structure, thereby preventing color mixing between red, green, and blue pixels. The method of manufacturing the in-cell touch LCD apparatus decreases the number of masks necessary to manufacture a TFT array substrate, thereby reducing a manufacturing time and the manufacturing cost.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: February 14, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yoon Hwan Woo, Dong Hyang Lee, Ji Ho Nam
  • Patent number: 9470923
    Abstract: Disclosed are an in-cell touch liquid crystal display (LCD) device having a pixel electrode top structure and a method of manufacturing the same. The in-cell touch LCD device includes a thin film transistor (TFT) disposed in each of a plurality of pixel areas, first to fourth passivation layers disposed on the TFT, a common electrode disposed on the second passivation layer, a conductive line disposed on the third passivation layer; a pixel electrode connected to a drain electrode of the TFT and disposed on the fourth passivation layer, and a bridge contact part configured to electrically connect the common electrode to the conductive line.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: October 18, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Yoon Hwan Woo, Young Sik Kim, Yang Ho Cho
  • Patent number: 9454052
    Abstract: Disclosed are an in-cell touch liquid crystal display (LCD) apparatus having a pixel electrode top structure and a method of manufacturing the same. The in-cell touch LCD apparatus is implemented in the pixel electrode top structure, thereby preventing color mixing between red, green, and blue pixels. The method of manufacturing the in-cell touch LCD apparatus decreases the number of masks necessary to manufacture a TFT array substrate, thereby reducing a manufacturing time and the manufacturing cost.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: September 27, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Ji Ho Nam, Yoon Hwan Woo
  • Publication number: 20160187690
    Abstract: Disclosed are an in-cell touch liquid crystal display (LCD) apparatus having a pixel electrode top structure and a method of manufacturing the same. The in-cell touch LCD apparatus is implemented in the pixel electrode top structure, thereby preventing color mixing between red, green, and blue pixels. The method of manufacturing the in-cell touch LCD apparatus decreases the number of masks necessary to manufacture a TFT array substrate, thereby reducing a manufacturing time and the manufacturing cost.
    Type: Application
    Filed: November 5, 2015
    Publication date: June 30, 2016
    Inventors: Ji Ho NAM, Yoon Hwan WOO
  • Publication number: 20160187693
    Abstract: Disclosed are an in-cell touch liquid crystal display (LCD) apparatus having a pixel electrode top structure and a method of manufacturing the same. The in-cell touch LCD apparatus is implemented in the pixel electrode top structure, thereby preventing color mixing between red, green, and blue pixels. The method of manufacturing the in-cell touch LCD apparatus decreases the number of masks necessary to manufacture a TFT array substrate, thereby reducing a manufacturing time and the manufacturing cost.
    Type: Application
    Filed: November 5, 2015
    Publication date: June 30, 2016
    Inventors: Yoon Hwan WOO, Dong Hyang LEE, Ji Ho NAM
  • Publication number: 20160187692
    Abstract: Disclosed are an in-cell touch liquid crystal display (LCD) device having a pixel electrode top structure and a method of manufacturing the same. The in-cell touch LCD device includes a thin film transistor (TFT) disposed in each of a plurality of pixel areas, first to fourth passivation layers disposed on the TFT, a common electrode disposed on the second passivation layer, a conductive line disposed on the third passivation layer; a pixel electrode connected to a drain electrode of the TFT and disposed on the fourth passivation layer, and a bridge contact part configured to electrically connect the common electrode to the conductive line.
    Type: Application
    Filed: October 28, 2015
    Publication date: June 30, 2016
    Inventors: Yoon Hwan WOO, Young Sik KIM, Yang Ho CHO
  • Patent number: 9285910
    Abstract: An in-cell type touch display device includes a panel including a plurality of electrodes, a display driver integrated circuit (IC) and a switching part, the plurality of electrodes being divided into a plurality of groups; and a touch IC generating a touch scan signal and applying the touch scan signal into the switching part, wherein the display driver IC generates a common voltage and applies the common voltage into the switching part, and wherein the switching part applies the common voltage into the plurality of electrodes or sequentially applies the touch scan signal into the electrodes in the plurality of groups according to a driving mode of the panel.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: March 15, 2016
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Gyoung-A Kim, Yoon-Hwan Woo
  • Publication number: 20150130753
    Abstract: A display device with an integrated touch screen includes a panel including m (m is a natural number) electrodes and m lines; a display driver IC applying a common voltage to the m electrodes; and a touch IC generating a touch scan signal to apply the touch scan signal to the m electrodes and receiving touch sensing signals according to the touch scan signal to detect a location of a touch input on the panel, wherein at least one of the m electrodes includes touch electrode portions and non-touch electrode portions.
    Type: Application
    Filed: September 5, 2014
    Publication date: May 14, 2015
    Inventors: Yoon-Hwan WOO, Hee-Sun SHIN
  • Publication number: 20140184543
    Abstract: An in-cell type touch display device includes a panel including a plurality of electrodes, a display driver integrated circuit (IC) and a switching part, the plurality of electrodes being divided into a plurality of groups; and a touch IC generating a touch scan signal and applying the touch scan signal into the switching part, wherein the display driver IC generates a common voltage and applies the common voltage into the switching part, and wherein the switching part applies the common voltage into the plurality of electrodes or sequentially applies the touch scan signal into the electrodes in the plurality of groups according to a driving mode of the panel.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 3, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Gyoung-A KIM, Yoon-Hwan WOO
  • Publication number: 20110291963
    Abstract: A touch display device includes a display panel, a conductive layer disposed on the display panel, a touch electrode disposed adjacent to the conductive layer and on the display panel, a routing line coupled to the touch electrode, and a polarizer disposed on the touch electrode and the conductive layer, where the conductive layer and the touch electrode are formed of the same material.
    Type: Application
    Filed: December 6, 2010
    Publication date: December 1, 2011
    Inventors: Yoon-Hwan Woo, Min-Ho Na, Sun-Jung Lee, Sang-Soo Hwang