Patents by Inventor Cheol-Gon Lee

Cheol-Gon 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).

  • Publication number: 20210083036
    Abstract: A display device includes a display panel having a display area and a non-display area, signal wires disposed in the display area, connection wires disposed in the display area and electrically connected to the signal wires, and touch electrodes disposed on the connection wires. The connection wires include diagonal portions extending in a diagonal direction, and first protrusion patterns protruding from the diagonal portions of the connection wires. Parts of the first protrusion patterns overlap the touch electrodes.
    Type: Application
    Filed: August 19, 2020
    Publication date: March 18, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Jang Mi KANG, Cheol Gon LEE, Jae Yong JANG, Mee Hye JUNG
  • Patent number: 10950180
    Abstract: A display panel includes a plurality of pixels each including a first transistor between a first node and a second node and having a gate electrode to receive the scan signal, a second transistor between the second node and a third node in series with the first transistor and having a gate electrode to receive the initialization control signal, a driving transistor between the first power voltage providing line and the third node and having a gate electrode connected to the first node, a third transistor between the third node and a fourth node and having a gate electrode to receive the emission control signal, an organic light emitting diode, between the fourth node and the second power voltage providing line, a first capacitor between the first power voltage providing line and the first node, and a second capacitor between the second node and one of the data lines.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: March 16, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Junhyun Park, Cheol-Gon Lee, Yang-Hwa Choi
  • Publication number: 20210074786
    Abstract: A display device includes a substrate; an active pattern disposed on the substrate; a first insulating layer; a first conductive layer disposed on the first insulating layer and having a driving gate electrode; a second insulating layer; a second conductive layer disposed on the second insulating layer and having a first storage electrode; a third insulating layer; a third conductive layer disposed on the third insulating layer and having a second storage electrode; and a light-emitting element disposed on the third conductive layer, wherein the second storage electrode overlaps the first storage electrode via the third insulating layer to form a first capacitor, the first storage electrode overlaps the driving gate electrode via the second insulating layer to form a second capacitor, and the driving gate electrode, the first storage electrode, and the second storage electrode at least partially overlap each other.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Inventors: Sang Jin Jeon, Cheol-Gon Lee, Sang-Uk Lim
  • Patent number: 10937364
    Abstract: A display device includes a plurality of pixels, each of the pixels including an organic light emitting diode and a plurality of transistors configured to control a current applied to the organic light emitting diode, wherein an aging frame includes an aging period in which at least one of the plurality of transistors is aged, wherein at least one of the plurality of transistors is in a turn-off state in the aging period, and wherein a potential difference between one electrode and an other electrode of a transistor of the plurality of transistors is equal to or greater than a reference potential difference, the reference potential difference being a difference value between a high level and a low level of a first power source voltage.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: March 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Wan Seo, Min Kyu Woo, Cheol Gon Lee, Mee Hye Jung
  • Publication number: 20210056909
    Abstract: A display device includes a substrate that includes a display area for displaying an image and a non-display area surrounding the display area, a plurality of pixels that are disposed in the display area and each include an organic light emitting diode and a pixel circuit portion configured to operate the organic light emitting diode, and a scan driver that is disposed in the non-display area and includes a plurality of stages configured to output scan signals to the plurality of pixels. The plurality of stages may be arranged in n columns, a height of one stage may correspond to a height of n pixels, and n may be an integer of 2 or more.
    Type: Application
    Filed: June 23, 2020
    Publication date: February 25, 2021
    Inventors: KANG MOON JO, Chong Chul Chai, Young Wan Seo, Cheol-Gon Lee
  • Patent number: 10867559
    Abstract: A display device including: a scan driver that transmits scan signals to scan lines; a data driver that data signals to data lines; and a display portion that includes pixels, respectively connected to the corresponding scan lines and corresponding data lines, and displays an image by the pixels that simultaneously emit light according to the corresponding data signals, wherein each of pixels includes: an organic light emitting diode; a first transistor that includes a gate connected to a first node, and is connected between first power and an anode of the organic light emitting diode; a second transistor that includes a gate connected to a corresponding scan line and transmits the corresponding data signal to the first node; and a first capacitor that is connected to the first node, and stores a data voltage according to the data signal.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: December 15, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Hyun Park, Cheol-Gon Lee, Yang-Hwa Choi
  • Patent number: 10847595
    Abstract: A display device includes a substrate; an active pattern disposed on the substrate; a first insulating layer; a first conductive layer disposed on the first insulating layer and having a driving gate electrode; a second insulating layer; a second conductive layer disposed on the second insulating layer and having a first storage electrode; a third insulating layer; a third conductive layer disposed on the third insulating layer and having a second storage electrode; and a light-emitting element disposed on the third conductive layer, wherein the second storage electrode overlaps the first storage electrode via the third insulating layer to form a first capacitor, the first storage electrode overlaps the driving gate electrode via the second insulating layer to form a second capacitor, and the driving gate electrode, the first storage electrode, and the second storage electrode at least partially overlap each other.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: November 24, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Jin Jeon, Cheol-Gon Lee, Sang-Uk Lim
  • Publication number: 20200365675
    Abstract: A display device includes: a substrate; a plurality of pixels provided in a pixel region of the substrate; a scan line and a data line, connected to each of the plurality of pixels; a first transistor connected to the scan line and the data line and a second transistor connected to the first transistor; a light emitting element connected to the transistor; a first blocking layer disposed between the substrate and the first transistor, the first blocking layer being electrically connected to the first transistor; and a second blocking layer disposed between the substrate and the second transistor, the second blocking layer being electrically connected to the second transistor, wherein the first blocking layer is connected to a gate electrode of the first transistor, and the second blocking layer is connected to any one of source and drain electrodes of the second transistor.
    Type: Application
    Filed: August 3, 2020
    Publication date: November 19, 2020
    Inventors: Il Joo KIM, Cheol Gon LEE, Mee Hye JUNG
  • Patent number: 10839757
    Abstract: A display device includes an initialization voltage line to which an initialization voltage is applied, a first driving voltage line to which a first driving voltage is applied, and a pixel connected to the initialization voltage line and the first driving voltage line. The pixel includes a first transistor to control a driving current flowing between a first electrode and a second electrode according to a voltage applied to a first node, a light emitting element between the first transistor and the first driving voltage line, and a first capacitor between the first node and the initialization voltage line. During an initialization period in which the light emitting element is initialized, the initialization voltage is changed from a first level voltage to a second level voltage lower than the first level voltage and the first driving voltage is changed from a first high-level voltage to a first low-level voltage.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: November 17, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun Hyun Park, Sun Kwang Kim, Young Wan Seo, Cheol Gon Lee, Yang Hwa Choi
  • Patent number: 10783832
    Abstract: A scan driver, includes a plurality of stage circuits, each of which includes a driving circuit unit providing an output signal and an inverter inverting the output signal of the driving circuit unit and generating a scan signal, in which the inverter includes a first transistor and a second transistor, which are complementarily operated, the first transistor is a P-type polysilicon transistor, and the second transistor is an N-type oxide semiconductor transistor. A display device may include the scan driver.
    Type: Grant
    Filed: December 17, 2017
    Date of Patent: September 22, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyoung Ju Shin, Cheol Gon Lee, Sang Uk Lim, Chang Yong Jeong
  • Publication number: 20200273402
    Abstract: A display device includes a plurality of pixels, each of the pixels including an organic light emitting diode and a plurality of transistors configured to control a current applied to the organic light emitting diode, wherein an aging frame includes an aging period in which at least one of the plurality of transistors is aged, wherein at least one of the plurality of transistors is in a turn-off state in the aging period, and wherein a potential difference between one electrode and an other electrode of a transistor of the plurality of transistors is equal to or greater than a reference potential difference, the reference potential difference being a difference value between a high level and a low level of a first power source voltage.
    Type: Application
    Filed: October 9, 2019
    Publication date: August 27, 2020
    Inventors: Young Wan SEO, Min Kyu WOO, Cheol Gon LEE, Mee Hye JUNG
  • Publication number: 20200265782
    Abstract: An organic light emitting display device includes a plurality of pixels. Each of the pixels Includes an organic light emitting diode, first to third transistors, a storage capacitor, and a first capacitor. The second transistor includes, a gate electrode receiving a first scan signal, a first electrode receiving a data signal, and a second electrode connected to a first electrode of the first transistor. The third transistor includes a gate electrode receiving a second scan signal, a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a gate electrode of the first transistor. The storage capacitor includes a first electrode receiving a power voltage and a second electrode connected to the gate electrode of the first transistor, The first capacitor includes a first electrode connected to the gate electrode of the third transistor and a second electrode receiving the power voltage.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 20, 2020
    Inventors: DONGWOO KIM, SUNGHWAN KIM, KYOUNGJU SHIN, CHEOL-GON LEE, SANG-UK LIM
  • Patent number: 10734465
    Abstract: A display device includes: a substrate; a plurality of pixels provided in a pixel region of the substrate; a scan line and a data line, connected to each of the plurality of pixels; a first transistor connected to the scan line and the data line and a second transistor connected to the first transistor; a light emitting element connected to the transistor; a first blocking layer disposed between the substrate and the first transistor, the first blocking layer being electrically connected to the first transistor; and a second blocking layer disposed between the substrate and the second transistor, the second blocking layer being electrically connected to the second transistor, wherein the first blocking layer is connected to a gate electrode of the first transistor, and the second blocking layer is connected to any one of source and drain electrodes of the second transistor.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: August 4, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Il Joo Kim, Cheol Gon Lee, Mee Hye Jung
  • Patent number: 10650739
    Abstract: An organic light emitting display device includes a plurality of pixels. Each of the pixels includes an organic light emitting diode, first to third transistors, a storage capacitor, and a first capacitor. The second transistor includes a gate electrode receiving a first scan signal, a first electrode receiving a data signal, and a second electrode connected to a first electrode of the first transistor. The third transistor includes a gate electrode receiving a second scan signal, a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a gate electrode of the first transistor. The storage capacitor includes a first electrode receiving a power voltage and a second electrode connected to the gate electrode of the first transistor. The first capacitor includes a first electrode connected to the gate electrode of the third transistor and a second electrode receiving the power voltage.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: May 12, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dongwoo Kim, Sunghwan Kim, Kyoungju Shin, Cheol-Gon Lee, Sang-Uk Lim
  • Patent number: 10650738
    Abstract: A pixel circuit includes three transistors, a capacitor, and an OLED. The first transistor includes a gate terminal for receiving a first control signal, a first terminal connected to a first node, and a second terminal connected to a second node. The second transistor includes a gate terminal for receiving a second control signal, a first terminal connected to the second node, and a second terminal connected to a third node. The third transistor includes a gate terminal connected to the first node, a first terminal for receiving a first power signal, and a second terminal connected to the third node. The capacitor may receive an initialization signal and is connected to the first node. The OLED is connected to the third node and may receive a second power signal. The control signals have same voltage levels in a data writing period and have different voltage levels in other periods.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Junhyun Park, Cheol-Gon Lee, Yang-Hwa Choi
  • Patent number: 10622436
    Abstract: A display device includes: an initialization power line extending along a first direction; a scan line extending along the first direction and spaced apart from the initialization power line, a data line and a driving voltage line insulated from the initialization power line and the scan line and extending along the second direction; a first switching element including a first electrode connected to the driving voltage line, a first gate electrode overlapping the initialization power line, and a second electrode; a second switching element including a third electrode connected to the first gate electrode, a second gate electrode connected to the scan line, and a fourth electrode; a third switching element including a fifth electrode connected to the fourth electrode, a third gate electrode connected to the initialization power line, and a sixth electrode connected to the second electrode; and a light emitting element connected to the second electrode.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: April 14, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun Hyun Park, Cheol Gon Lee, Chong Chul Chai, Yang Hwa Choi
  • Publication number: 20200090595
    Abstract: A display device includes an initialization voltage line to which an initialization voltage is applied, a first driving voltage line to which a first driving voltage is applied, and a pixel connected to the initialization voltage line and the first driving voltage line. The pixel includes a first transistor to control a driving current flowing between a first electrode and a second electrode according to a voltage applied to a first node, a light emitting element between the first transistor and the first driving voltage line, and a first capacitor between the first node and the initialization voltage line. During an initialization period in which the light emitting element is initialized, the initialization voltage is changed from a first level voltage to a second level voltage lower than the first level voltage and the first driving voltage is changed from a first high-level voltage to a first low-level voltage.
    Type: Application
    Filed: September 12, 2019
    Publication date: March 19, 2020
    Inventors: Jun Hyun PARK, Sun Kwang KIM, Young Wan SEO, Cheol Gon LEE, Yang Hwa CHOI
  • Publication number: 20200090587
    Abstract: In a display device including pixels, each of the pixels may include: a first transistor coupled to a first node, a first power supply voltage line, and a second node; and a light-emitting diode coupled to the second node and a second power supply voltage line. Each image frame may include at least two emission enable periods for the light-emitting diode, and at least one emission inhibit period between the at least two emission enable periods.
    Type: Application
    Filed: July 29, 2019
    Publication date: March 19, 2020
    Inventors: YOUNG WAN SEO, Min Kyu Woo, An Su Lee, Cheol Gon Lee
  • Publication number: 20200006461
    Abstract: A display apparatus including a substrate, a first power source line disposed in a peripheral area adjacent to a display area configured to display image, the first power source line including a first layer and a second layer disposed on the first layer and electrically connected to the first layer, a first insulation layer disposed between the first layer and the second layer of the first power source line, and a first insulating dam disposed on and contacting the second layer of the first power source line, the first insulating dam disposed in the peripheral area and surrounding the display area.
    Type: Application
    Filed: April 10, 2019
    Publication date: January 2, 2020
    Inventors: Youngjin Cho, Joong-Soo Moon, Cheol-Gon Lee, Yang Wan Kim, Changkyu Jin
  • Publication number: 20190393291
    Abstract: A display device includes a substrate; an active pattern disposed on the substrate; a first insulating layer; a first conductive layer disposed on the first insulating layer and having a driving gate electrode; a second insulating layer; a second conductive layer disposed on the second insulating layer and having a first storage electrode; a third insulating layer; a third conductive layer disposed on the third insulating layer and having a second storage electrode; and a light-emitting element disposed on the third conductive layer, wherein the second storage electrode overlaps the first storage electrode via the third insulating layer to form a first capacitor, the first storage electrode overlaps the driving gate electrode via the second insulating layer to form a second capacitor, and the driving gate electrode, the first storage electrode, and the second storage electrode at least partially overlap each other.
    Type: Application
    Filed: April 29, 2019
    Publication date: December 26, 2019
    Inventors: Sang Jin JEON, Cheol-Gon LEE, Sang-Uk LIM