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).

  • Patent number: 11501715
    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: Grant
    Filed: June 23, 2020
    Date of Patent: November 15, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kang Moon Jo, Chong Chul Chai, Young Wan Seo, Cheol-Gon Lee
  • Publication number: 20220343844
    Abstract: A pixel includes a light emitting element, a driving switching element, an initialization voltage terminal, a data initialization switching element set, and an adjustment switching element. The driving switching element may provide a driving current to the light emitting element. The adjustment switching element is electrically connected to the data initialization switching element in series. At least one of the data initialization switching element set and the adjustment switching element may control an electrical connection between the control electrode of the driving switching element and the initialization voltage terminal. A control electrode of the adjustment switching element is electrically connected to an input electrode of the adjustment switching element.
    Type: Application
    Filed: January 24, 2022
    Publication date: October 27, 2022
    Inventors: HEERIM SONG, MUKYUNG JEON, HEEJEAN PARK, YUJIN LEE, CHEOL-GON LEE
  • Patent number: 11468838
    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: June 8, 2021
    Date of Patent: October 11, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dongwoo Kim, Sunghwan Kim, Kyoungju Shin, Cheol-Gon Lee, Sang-Uk Lim
  • Publication number: 20220148502
    Abstract: An emissive display device includes a display area which includes a plurality of pixels, and a driver disposed at a side of the display area, where the driver includes at least two emission signal stages disposed in one row, and an input signal line connected to the emission signal stages, and the at least two emission signal stages are connected to the same input signal line.
    Type: Application
    Filed: July 29, 2021
    Publication date: May 12, 2022
    Inventors: Hae Min KIM, Min Jae JEONG, Jang Mi KANG, Hyun Joon KIM, Jun Hyun PARK, Cheol-Gon LEE
  • Patent number: 11251251
    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: August 3, 2020
    Date of Patent: February 15, 2022
    Inventors: Il Joo Kim, Cheol Gon Lee, Mee Hye Jung
  • Patent number: 11239261
    Abstract: A display device having a gate driver which may reduce generation of ripple at the output of the gate drive includes: a substrate; and a driver circuit including a thin film transistor disposed on the substrate, the thin film transistor including: a first gate electrode disposed on the substrate; a semiconductor layer disposed on the first gate electrode to overlap a part of the first gate electrode, the semiconductor layer including channel, source, and drain regions; a second gate electrode disposed on the semiconductor layer; and a source electrode and a drain electrode disposed on the semiconductor layer and respectively connected to the source region and the drain region, wherein a first area formed by the overlapping portion of the first gate electrode and the drain region has a different size than a second area formed by the overlapping portion of the first gate electrode and the source region.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: February 1, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheol-Gon Lee, Il-Joo Kim, Mee Hye Jung, Jun Ki Jeong
  • Patent number: 11211003
    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: Grant
    Filed: July 29, 2019
    Date of Patent: December 28, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Wan Seo, Min Kyu Woo, An Su Lee, Cheol Gon Lee
  • Publication number: 20210399083
    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: September 3, 2021
    Publication date: December 23, 2021
    Applicant: Samsung Display Co., LTD.
    Inventors: Jang Mi KANG, Cheol Gon LEE, Jae Yong JANG, Mee Hye JUNG
  • Patent number: 11200849
    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: December 8, 2020
    Date of Patent: December 14, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Hyun Park, Cheol-Gon Lee, Yang-Hwa Choi
  • Patent number: 11164533
    Abstract: A display device includes a data line to which a data voltage is applied, a first driving voltage line to which a first driving voltage is applied, a second driving voltage line to which a second driving voltage is applied, and a pixel connected to the first and second driving voltage lines. The pixel includes a first transistor to control a driving current 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 capacitor between the first node and the second driving voltage line. The first driving voltage has a first high-level voltage during a first initialization period, the first driving voltage has a first mid-level voltage lower than the first high level voltage during a threshold-voltage-storage period, and the first driving voltage has a first low-level voltage during a second initialization period.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: November 2, 2021
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Jun Hyun Park, Sun Kwang Kim, Young Wan Seo, Cheol Gon Lee, Yang Hwa Choi
  • Publication number: 20210293771
    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: June 8, 2021
    Publication date: September 23, 2021
    Inventors: DONGWOO KIM, SUNGHWAN KIM, KYOUNGJU SHIN, CHEOL-GON LEE, SANG-UK LIM
  • Publication number: 20210280659
    Abstract: A display device includes a display panel having a general area including first subpixels, and a sensor area including second subpixels and light-transmitting area. Each of the first subpixels and the second subpixels includes a first active layer disposed on a substrate and formed of a first material, a first gate layer disposed on the first active layer, a second gate layer disposed on the first gate layer, a second active layer disposed on the second gate layer and formed of a second material different from the first material, a third gate layer disposed on the second active layer, and a light-blocking layer disposed between the substrate and the first active layer and overlapping the second active layer in a thickness direction.
    Type: Application
    Filed: December 31, 2020
    Publication date: September 9, 2021
    Inventors: Jun Hyun Park, Hyeong Seok Kim, Young Wan Seo, Yu Jin Lee, Cheol Gon Lee
  • Patent number: 11114520
    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: Grant
    Filed: August 19, 2020
    Date of Patent: September 7, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jang Mi Kang, Cheol Gon Lee, Jae Yong Jang, Mee Hye Jung
  • Publication number: 20210257441
    Abstract: A display apparatus including a substrate, a first power source line disposed in a peripheral area adjacent to a display area, the first power source line including a first layer and a second layer electrically connected to each other, a first gate pattern disposed between the first layer of the substrate and including a first gate fan-out line in the peripheral area and a first gate connecting line connected to the first gate fan-out line and extending between the first gate fan-out line and the display area, a first insulation layer disposed between the first layer and the second layer of the first power source line, a second insulation layer disposed between the first insulation layer and the second layer, and a first insulating dam disposed on and contacting the second layer, the first insulating dam disposed in the peripheral area and surrounding the display area.
    Type: Application
    Filed: May 4, 2021
    Publication date: August 19, 2021
    Inventors: Youngjin CHO, Joong-Soo MOON, Cheol-Gon LEE, Yang Wan KIM, Changkyu JIN
  • Patent number: 11030953
    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: May 8, 2020
    Date of Patent: June 8, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dongwoo Kim, Sunghwan Kim, Kyoungju Shin, Cheol-gon Lee, Sang-uk Lim
  • Patent number: 11004927
    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: Grant
    Filed: April 10, 2019
    Date of Patent: May 11, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youngjin Cho, Joong-Soo Moon, Cheol-Gon Lee, Yang Wan Kim, Changkyu Jin
  • Publication number: 20210126080
    Abstract: A display panel includes a first display area and a second display area. The display panel includes a plurality of first pixel groups in the first display area, a plurality of second pixel groups in the second display area, and a plurality of scan lines connected to the first and second pixel groups. The second display area includes a plurality of light emitting areas in which the second pixel groups are respectively disposed, and a plurality of open areas in which the second pixel groups are not disposed. One of a second pixel group of an n-th row is cut and does not overlap an adjacent open area of the n-th row, and is connected in the second display area to a scan line of a second pixel group of an (n?1)-th row or a scan line of a second pixel group of an (n+1)-th row.
    Type: Application
    Filed: September 22, 2020
    Publication date: April 29, 2021
    Inventors: Hyeongseok KIM, Youngwan SEO, Junhyun PARK, YUJIN LEE, Cheol-Gon LEE
  • Patent number: 10991305
    Abstract: An organic light emitting (OLE) display device includes pixels connected to scan lines (SLs), data lines (DLs), and a first control line (FCL) commonly connected to the pixels. Each pixel includes: an OLE diode connected between a first power source (PS) and a second PS; a first transistor (TFT1) connected between the first PS and the OLE diode, a gate electrode (GE) of the TFT1 being connected to a first node (N1); a second transistor (TFT2) connected between the N1 and a second node (N2), a GE of the TFT2 being connected to a SL; a third transistor (TFT3) connected between the N2 and a third node (N3), the N3 being connected between the TFT1 and the OLED, a GE of the TFT3 being connected to the FCL; a first capacitor connected between the first PS and the N1; and a second capacitor connected between the N2 and a DL.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: April 27, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Hyun Park, Cheol Gon Lee, Yang Hwa Choi
  • Publication number: 20210090505
    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: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Inventors: Jun Hyun PARK, Cheol-Gon Lee, Yang-Hwa Choi
  • Publication number: 20210082353
    Abstract: A display device includes a data line to which a data voltage is applied, a first driving voltage line to which a first driving voltage is applied, a second driving voltage line to which a second driving voltage is applied, and a pixel connected to the first and second driving voltage lines. The pixel includes a first transistor to control a driving current 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 capacitor between the first node and the second driving voltage line. The first driving voltage has a first high-level voltage during a first initialization period, the first driving voltage has a first mid-level voltage lower than the first high level voltage during a threshold-voltage-storage period, and the first driving voltage has a first low-level voltage during a second initialization period.
    Type: Application
    Filed: November 10, 2020
    Publication date: March 18, 2021
    Applicant: Samsung Display Co. Ltd.
    Inventors: Jun Hyun Park, Sun Kwang Kim, Young Wan Seo, Cheol Gon Lee, Yang Hwa Choi