Patents by Inventor Sang-Myoung LEE

Sang-Myoung 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: 20250166550
    Abstract: A display device includes a display panel including a sub-pixel, and a display panel driver for driving the display panel. The sub-pixel includes a driving transistor, a storage capacitor connected to a control electrode of the driving transistor, a write transistor writing a data voltage to the storage capacitor in response to a write gate signal, a first emission transistor providing a first power voltage to a first electrode of the driving transistor in response to a first emission signal, a hold capacitor including a first electrode receiving the first power voltage and a second electrode connected to a second electrode of the driving transistor, and a light emitting element emitting light. The first emission signal has an active level in a first portion of each of first periods of one frame, and has the active level in each of second periods respectively subsequent to the first periods.
    Type: Application
    Filed: October 8, 2024
    Publication date: May 22, 2025
    Inventors: Jong Sik SHIM, Sang Myoung LEE, Dae Seop KIM, Tae Hoon KIM, Seung Hwan CHEONG, Seung Ji CHA
  • Publication number: 20250166564
    Abstract: A display device includes pixels connected to scan lines, data lines, and emission control lines, a start signal generator configured to generate a first start signal corresponding to a first emission control signal supplied in a write period of a frame period, in which a data signal is supplied, and a second start signal corresponding to a second emission control signal supplied in a maintenance period of the frame period, in which the data signal is maintained, and having a width that is different from a width of the first start signal, a selector configured to supply the first start signal or the second start signal based on a control signal from a controller, and an emission driver configured to supply the first emission control signal or the second emission control signal to the emission control lines based on the first start signal or the second start signal.
    Type: Application
    Filed: October 15, 2024
    Publication date: May 22, 2025
    Inventors: Sang Hyun KANG, Do Hyun KANG, Oh Chul KWON, Pan Ju KIM, Byung Kwan SONG, Joo Sun YOON, Sang Myoung LEE, Joon HUH
  • Publication number: 20250087141
    Abstract: A display device includes: a memory, a driving controller, a light emitting element, a first transistor including a first electrode, a second electrode, and a gate electrode for receiving a data signal, a second transistor connected between a first driving voltage line and the first electrode of the first transistor and receiving a first emission signal, and a third transistor connected between the second electrode of the first transistor and the light emitting element and receiving a second emission signal. The first emission signal includes a compensation period and an emission period, and the memory stores instructions that, when executed by the driving controller, cause the driving controller to determine a compensation time of the compensation period depending on target luminance.
    Type: Application
    Filed: November 24, 2024
    Publication date: March 13, 2025
    Inventors: JOON HUH, SANGHYUN KANG, SANG-MYOUNG LEE, JAEHOON LEE, JOOSUN YOON
  • Patent number: 12230207
    Abstract: A pixel of a display device includes a first transistor including a gate connected to a first node, a first terminal, and a second terminal connected to a second node, a first storage capacitor connected between the first node and the second node, a second storage capacitor connected between the first node and the second node, a second transistor including a gate connected to the first node, a first terminal, and a second terminal connected to the first node, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor including a gate receiving an emission signal, a first terminal connected to a line of a first power supply voltage, and a second terminal connected to the first terminal of the first transistor, and a light emitting element including an anode connected to the second node, and a cathode connected to a line of a second power supply voltage.
    Type: Grant
    Filed: October 20, 2023
    Date of Patent: February 18, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Myoung Lee, Sanghyun Kang, Subin Park, Joosun Yoon, Minseong Yi, Seonghyun Jin, Joon Huh
  • Publication number: 20240276807
    Abstract: One or more embodiments provide a light-emitting display device including a substrate, a first transistor including a lower electrode above the substrate, a first semiconductor overlapping the lower electrode, and a first gate electrode overlapping the first semiconductor, a light-emitting diode electrically connected to the first transistor, a storage capacitor including a first storage electrode electrically connected to the lower electrode, and a second storage electrode overlapping the first storage electrode, a shielding electrode at a same layer as the lower electrode or as the first semiconductor, a data line overlapping the shielding electrode, and configured to transmit a data voltage, and an auxiliary electrode between the shielding electrode and the data line, overlapping the shielding electrode, and adjacent to the first gate electrode.
    Type: Application
    Filed: November 15, 2023
    Publication date: August 15, 2024
    Inventors: Sang-Myoung LEE, Sang Hyun KANG, JOON HUH, Dae Cheol KIM
  • Publication number: 20240249683
    Abstract: A pixel of a display device includes a first transistor including a gate connected to a first node, a first terminal, and a second terminal connected to a second node, a first storage capacitor connected between the first node and the second node, a second storage capacitor connected between the first node and the second node, a second transistor including a gate connected to the first node, a first terminal, and a second terminal connected to the first node, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor including a gate receiving an emission signal, a first terminal connected to a line of a first power supply voltage, and a second terminal connected to the first terminal of the first transistor, and a light emitting element including an anode connected to the second node, and a cathode connected to a line of a second power supply voltage.
    Type: Application
    Filed: October 20, 2023
    Publication date: July 25, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: SANG-MYOUNG LEE, SANGHYUN KANG, SUBIN PARK, JOOSUN YOON, MINSEONG YI, SEONGHYUN JIN, JOON HUH
  • Publication number: 20240221623
    Abstract: A display device that includes multiple pixels, each pixel includes a light emitting element, a multiple of transistors, multiple voltage sources and capacitors. The pixel circuit is designed and the pixels are driven so that a driving current going through the light emitting element is independent of a threshold voltage of a driving transistor of the multiple transistors. As a result, luminance variation due to threshold voltage can be minimized, and residual image can be reduced.
    Type: Application
    Filed: October 30, 2023
    Publication date: July 4, 2024
    Applicant: Samsung Display Co., LTD.
    Inventors: Sang Myoung LEE, Su Bin PARK, Sang Hyun KANG, Dae Cheol KIM, Do Yeong PARK, Joon HUH
  • Publication number: 20240196652
    Abstract: A display device includes: a first metal layer on a substrate; an active layer on the first metal layer; a second metal layer on the active layer; a third metal layer on the second metal layer; a first transistor including: a semiconductor region at the active layer; a drain electrode on a first side of the semiconductor region; a source electrode on a second side of the semiconductor region; and a gate electrode at the second metal layer; a first capacitor including: a first capacitor electrode at the first metal layer, and electrically connected to the gate electrode of the first transistor; and a second capacitor electrode integral with the source electrode of the first transistor, and on a third side of the semiconductor region of the first transistor; and a compensation pattern at the active layer, and on a fourth side of the semiconductor region of the first transistor.
    Type: Application
    Filed: September 15, 2023
    Publication date: June 13, 2024
    Inventors: Sang Myoung LEE, Sang Hyun KANG, Joon HUH, Seong Hyun JIN
  • Patent number: 11747685
    Abstract: A display device includes a first substrate, a second substrate disposed on the first substrate, an image display layer disposed between the first substrate and the second substrate, a gate driver disposed at a first side surface of the first substrate, a data driver disposed at a second side surface of the first substrate, and conductive layers respectively disposed in recesses recessed from the first side surface of the first substrate. The gate driver is electrically connected to the conductive layers.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: September 5, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Myoung Lee, SangHyun Kang, Sejin Kim, Mincheol Chae
  • Patent number: 11327352
    Abstract: A display device includes a first substrate including a first side surface, a display area, and a pad area located outside of the display area and adjacent to the first side surface, a second substrate facing the first substrate and including a second side surface extending further outward than the first side surface of the first substrate, a printed circuit board electrically connected to the pad area of the first substrate and bent along the first side surface of the first substrate, and a light blocking chassis overlapping the printed circuit board and the first side surface of the first substrate.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: May 10, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Myoung Lee, In Ho Park, Joo Lark Son, Min Cheol Chae
  • Publication number: 20220011623
    Abstract: A display device includes a first substrate including a first side surface, a display area, and a pad area located outside of the display area and adjacent to the first side surface, a second substrate facing the first substrate and including a second side surface extending further outward than the first side surface of the first substrate, a printed circuit board electrically connected to the pad area of the first substrate and bent along the first side surface of the first substrate, and a light blocking chassis overlapping the printed circuit board and the first side surface of the first substrate.
    Type: Application
    Filed: January 15, 2021
    Publication date: January 13, 2022
    Applicant: Samsung Display Co., LTD.
    Inventors: Sang Myoung LEE, In Ho PARK, Joo Lark SON, Min Cheol CHAE
  • Publication number: 20210033909
    Abstract: A display device includes a first substrate, a second substrate disposed on the first substrate, an image display layer disposed between the first substrate and the second substrate, a gate driver disposed at a first side surface of the first substrate, a data driver disposed at a second side surface of the first substrate, and conductive layers respectively disposed in recesses recessed from the first side surface of the first substrate. The gate driver is electrically connected to the conductive layers.
    Type: Application
    Filed: May 20, 2020
    Publication date: February 4, 2021
    Inventors: Sang-Myoung LEE, SangHyun KANG, SEJIN KIM, Mincheol CHAE
  • Patent number: 10649251
    Abstract: A method of manufacturing a curved liquid crystal display is provided. The method includes forming a first display panel including a plurality of first patterns, forming a second display panel including a plurality of second patterns, assembling the first display panel and the second display panel, filling a liquid crystal between the assembled first and second display panels to form a flat liquid crystal display, and curving the flat liquid crystal display in a first direction to form the curved liquid crystal display. The first patterns and the second patterns are mismatched in the flat liquid crystal display, and the first patterns and the second patterns are matched in the curved liquid crystal display.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: O Sung Seo, Hyun-Ho Kang, Young Goo Song, Seung Jun Yu, Ha Won Yu, Ki Kyung Youk, Sang-Myoung Lee, Tae Kyung Yim
  • Patent number: 10371993
    Abstract: A curved liquid crystal display includes a first panel having a pixel electrode including crossed stem parts, a plurality of fine branch parts extending from the crossed stem parts, and fine slits positioned between fine branch parts adjacent to each other, a second panel having a common electrode, and a liquid crystal layer between the first panel and the second panel. Misalignment between the first panel and the second lower panel is determined and a pitch, which is a sum of a width of the fine branch part and a width of the fine slit, gradually increases from a region having a small misalignment toward a region having a large misalignment.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: August 6, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyun-Ho Kang, O Sung Seo, Seung Jun Yu, Ha Won Yu, Ki Kyung Youk, Yeo Geon Yoon, Sang-Myoung Lee, Tae Kyung Yim
  • Patent number: 10229935
    Abstract: A display device according to an exemplary embodiment of the present inventive concept includes: a first insulation substrate; a thin film transistor disposed on the first insulation substrate; a pixel electrode coupled to the thin film transistor; a second insulation substrate facing the first insulation substrate; and a common electrode disposed on the second insulation substrate. The pixel electrode includes a first subpixel electrode including a first vertical stem portion and a first horizontal stem portion that is disposed perpendicular to the first vertical stem portion at an end of the first vertical stem portion, and a second subpixel electrode including a second vertical stem portion and a second horizontal stem portion that is disposed perpendicular to the second vertical stem portion at an end of the second vertical step portion.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: March 12, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: O Sung Seo, Hyun-Ho Kang, Young Goo Song, Seung Jun Yu, Ha Won Yu, Ki Kyung Youk, Sang Myoung Lee, Tae Kyung Yim
  • Patent number: 10216043
    Abstract: Embodiments relate to a liquid crystal display and a manufacturing method thereof, and more particularly, to a liquid crystal display including an alignment layer pattern and a manufacturing method thereof. The liquid crystal display includes a lower panel including a first alignment layer and a signal line. An upper panel faces the lower panel and uncovers an end portion of the signal line of the lower panel. A sealant is positioned between the lower panel and the upper panel and couples the lower panel and the upper panel with each other. The first alignment layer includes a first portion and a second portion that are separated from each other in a first direction, and the sealant is disposed between the first portion and the second portion and separated from the first portion and the second portion in the first direction.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: February 26, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Myoung Lee, Seung Jun Yu, Do Yeong Park, Young Goo Song, Sang Woo Whangbo
  • Patent number: 10209574
    Abstract: A liquid crystal display according to an exemplary embodiment includes a display substrate including a display area for displaying an image and a non-display area enclosing the display area; a plurality of normal pixels formed in an edge region among a center region of the display area and a peripheral area of the display area, and a plurality of corner pixels formed in a corner region of the peripheral area of the display area; and a sealant formed in the non-display area. A corner pixel of the plurality of corner pixels and the sealant are separated from each other.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: February 19, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Myoung Lee, Seung Jun Yu, O Sung Seo, Joong Gun Chong
  • Patent number: 10062345
    Abstract: A curved liquid crystal display (LCD) includes a curved liquid crystal panel assembly. The curved liquid crystal panel assembly includes: a lower panel including a first linear polarizer having a first polarization axis; an upper panel including a second linear polarizer having a second polarization axis, the second polarization axis cross the first polarization axis in a plan view; and a liquid crystal layer interposed between the lower panel and the upper panel. An angle formed by a first polarization axis and a second polarization axis does not meet at a right angle in a plan view.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: August 28, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Kyung Yim, Hyun Ho Kang, O Sung Seo, Seung Jun Yu, Ha Won Yu, Ki Kyung Youk, Yeo Geon Yoon, Sang Myoung Lee
  • Patent number: 9995972
    Abstract: A display device according to an exemplary embodiment of the present inventive concept includes: a first insulation substrate; a thin film transistor; a pixel electrode; a second insulation substrate; and a common electrode. The pixel electrode includes a first subpixel electrode including a first horizontal stem portion and a first vertical stem portion perpendicular thereto at one end of the first horizontal stem portion and a second subpixel electrode including a second vertical stem portion and a second horizontal stem portion perpendicular thereto at one end of the second horizontal stem portion, a plurality of regions in which arrangements of liquid crystal molecules are respectively different are divided by the first horizontal stem portion, the first vertical stem portion, the second horizontal stem portion, and the second vertical stem portion, and each of the plurality of regions has a longest vertical length of less than about 100 ?m.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: O Sung Seo, Hyun-Ho Kang, Seung Jun Yu, Ha Won Yu, Ki Kyung Youk, Yeo Geon Yoon, Sang-Myoung Lee, Tae Kyung Yim
  • Patent number: 9946120
    Abstract: A display device according to an exemplary embodiment of the present invention includes a flexible first substrate including a display area, and a non-display area around the display area, a first piezoelectric material layer—at one side of the first substrate, an intermediate electrode layer contacting the first piezoelectric material layer, a piezoelectric material layer driver coupled to the intermediate electrode layer, and configured to apply a driving voltage to the intermediate electrode layer to form an electric field at the first piezoelectric material layer, a thin film transistor at one side of the first substrate, and a pixel electrode connected to the thin film transistor.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: April 17, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Myoung Lee, Woong Kwon Kim, Bum Ki Baek, Seung Ki Song, Kang-Young Lee, Seong Jun Hwang