Patents by Inventor Won Jang KI

Won Jang KI 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: 20240431162
    Abstract: A display device includes a display area containing multiple pixels, and a pad area outside the display area containing multiple pads. The pads include a first conductive layer on the substrate, a second conductive layer above the first conductive layer, a third conductive layer above the second conductive layer, and a fourth conductive layer above the third conductive layer. The third conductive layer covers the side of the second conductive layer, and the display area includes multiple pixel electrodes, a fifth conductive layer located on the same layer as the third conductive layer, and a first insulating layer located between the fifth conductive layer and the pixel electrodes. No insulating layer is on the same layer as the first insulating layer between the third conductive layer and the fourth conductive layer of the pads, and the side of the third conductive layer has a smooth surface.
    Type: Application
    Filed: February 16, 2024
    Publication date: December 26, 2024
    Inventors: Deok-Young CHOI, Won Jang KI, YEONJU SEO, JOOHYE JUNG
  • Publication number: 20240414985
    Abstract: A display device includes a substrate including a display area and a non-display area, a transistor positioned in the display area, a light emitting element electrically connected to the transistor, and a common voltage transmission line positioned in the non-display area and including a depression, a transmission line, a first dam and a second dam positioned in the non-display area and spaced apart from each other and surrounding at least a portion of the display area, and a cover organic layer overlapping an edge of the recessed portion, wherein an edge of the recessed portion is positioned between the first dam and the second dam.
    Type: Application
    Filed: February 16, 2024
    Publication date: December 12, 2024
    Inventors: Sunho KANG, Deok-Young CHOI, Won Jang KI
  • Publication number: 20240341129
    Abstract: A display device includes: a substrate including a display area, a non-display area, and a sub-region, a circuit layer, a light emitting element layer, an encapsulation layer, and a polarization layer. The non-display area includes a dam area apart from the display area and in which at least one dam portion surrounding the display area is arranged, and a junction area surrounding the dam area. The circuit layer includes a semiconductor layer, a first insulating layer, a first conductive layer, a second insulating layer, a second conductive layer, a third insulating layer, a third conductive layer, a fourth insulating layer, and a fourth conductive layer. In the junction area, the encapsulation layer is disposed on the third insulating layer. A thickness of the third insulating layer at a central point of the junction area is substantially the same as a thickness of the third insulating layer in the display area.
    Type: Application
    Filed: December 13, 2023
    Publication date: October 10, 2024
    Inventors: Yeon Ju SEO, Won Jang KI, Nam Jin KIM, Deok Young CHOI
  • Patent number: 11322572
    Abstract: An organic light emitting diode display is described which includes a substrate having a display area and a non-display area; a metal layer disposed on the non-display area of the substrate, an insulating layer, a voltage line disposed on the gate insulating layer and receiving a driving voltage, a second voltage line disposed on the gate insulating layer and receiving a low driving voltage, an organic insulating layer, and a cathode electrode disposed on the organic insulating layer. The second voltage line and the cathode electrode are electrically connected to each other through an opening formed in the organic insulating layer, and the first voltage line or the second voltage line is electrically connected to the metal layer through an opening formed in the gate insulating layer.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: May 3, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae-Hyun Noh, Yong Sung Park, Won Jang Ki, Dong-Hyun Lee, Min Su Lee, Seung Bin Lee
  • Patent number: 11238806
    Abstract: A display device includes: a display panel including a plurality of pixels; a scan driver configured to supply a scan signal to the pixels through a scan line; and a timing controller configured to control a pulse width of the scan signal according to a display luminance of the display panel.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: February 1, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yong Sung Park, Won Jang Ki, Dae Hyun Noh, Min Su Lee, Seung Bin Lee
  • Patent number: 10997881
    Abstract: A display device includes a base substrate which includes a display area and a peripheral area, the peripheral area including a bending area; a first test signal line and a second test signal line which are located on the peripheral area; a lower insulating layer which is located on the first test signal line and the second test signal line; a first test connection pattern which is located on the lower insulating layer and connected to the first test signal line; a second test connection pattern which is located on the lower insulating layer, spaced apart from the first test connection pattern, and connected to the second test signal line; an upper insulating layer; and a first crack detection line which is located on the upper insulating layer, is connected to the first and second test connection patterns, and has at least a portion overlapping the bending area.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: May 4, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Cheol Shin, Won Jang Ki, Mi Jung Kim, Sang Cheon Han
  • Patent number: 10879316
    Abstract: A display device including a substrate which has a plurality of pixels each including an emission portion and a non-emission portion, a first electrode which is disposed on the emission portion, a pixel definition layer which is disposed on an edge of the first electrode and the non-emission portion, a common organic layer which is disposed on the first electrode and the pixel definition layer, an organic light-emitting layer which is disposed on the common organic layer and overlaps the emission portion, and a second electrode which is disposed on the common organic layer and the organic light-emitting layer. The pixel definition layer includes a plurality of pits between adjacent pixels. The common organic layer and the second electrode are separated by the pits.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: December 29, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Minsu Lee, Yong Sung Park, Won Jang Ki, Dae Hyun Noh, Seung Bin Lee
  • Publication number: 20200302875
    Abstract: A display device includes: a display panel including a plurality of pixels; a scan driver configured to supply a scan signal to the pixels through a scan line; and a timing controller configured to control a pulse width of the scan signal according to a display luminance of the display panel.
    Type: Application
    Filed: January 31, 2020
    Publication date: September 24, 2020
    Inventors: Yong Sung PARK, Won Jang KI, Dae Hyun NOH, Min Su LEE, Seung Bin LEE
  • Publication number: 20200286976
    Abstract: An organic light emitting diode display is described which includes a substrate having a display area and a non-display area; a metal layer disposed on the non-display area of the substrate, an insulating layer, a voltage line disposed on the gate insulating layer and receiving a driving voltage, a second voltage line disposed on the gate insulating layer and receiving a low driving voltage, an organic insulating layer, and a cathode electrode disposed on the organic insulating layer. The second voltage line and the cathode electrode are electrically connected to each other through an opening formed in the organic insulating layer, and the first voltage line or the second voltage line is electrically connected to the metal layer through an opening formed in the gate insulating layer.
    Type: Application
    Filed: February 7, 2020
    Publication date: September 10, 2020
    Inventors: DAE-HYUN NOH, YONG SUNG PARK, WON JANG KI, DONG-HYUN LEE, MIN SU LEE, SEUNG BIN LEE
  • Publication number: 20200235172
    Abstract: A display device including a substrate which has a plurality of pixels each including an emission portion and a non-emission portion, a first electrode which is disposed on the emission portion, a pixel definition layer which is disposed on an edge of the first electrode and the non-emission portion, a common organic layer which is disposed on the first electrode and the pixel definition layer, an organic light-emitting layer which is disposed on the common organic layer and overlaps the emission portion, and a second electrode which is disposed on the common organic layer and the organic light-emitting layer. The pixel definition layer includes a plurality of pits between adjacent pixels. The common organic layer and the second electrode are separated by the pits.
    Type: Application
    Filed: August 21, 2019
    Publication date: July 23, 2020
    Inventors: Minsu Lee, Yong Sung Park, Won Jang Ki, Dae Hyun Noh, Seung Bin Lee
  • Publication number: 20190019441
    Abstract: A display device includes a base substrate which includes a display area and a peripheral area, the peripheral area including a bending area; a first test signal line and a second test signal line which are located on the peripheral area; a lower insulating layer which is located on the first test signal line and the second test signal line; a first test connection pattern which is located on the lower insulating layer and connected to the first test signal line; a second test connection pattern which is located on the lower insulating layer, spaced apart from the first test connection pattern, and connected to the second test signal line; an upper insulating layer; and a first crack detection line which is located on the upper insulating layer, is connected to the first and second test connection patterns, and has at least a portion overlapping the bending area.
    Type: Application
    Filed: January 3, 2018
    Publication date: January 17, 2019
    Inventors: Jun Cheol SHIN, Won Jang KI, Mi Jung KIM, Sang Cheon HAN