Patents by Inventor Sang Hyeon Kwak

Sang Hyeon Kwak 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: 10247971
    Abstract: There is provided a flexible display having a new wire structure and a new insulating layer structure. A flexible display includes a flexible substrate having a first area and a second area. The second area is curved in a non-zero angle relative to the plane of the first area. The flexible display further includes a plurality of wires that extend over from the first area to the second area of the flexible substrate. Each of the wires is covered by an upper insulating pattern, which is separated from other upper insulating pattern. Each upper insulating pattern covering the wire has substantially the same trace pattern shape of the corresponding wire thereunder. Accordingly, by adopting the above-described wire structure and upper insulating layer structure, crack generation and propagation in the wires and the insulating layers from bending of the flexible display can be minimized.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: April 2, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Seyeoul Kwon, Sang Hyeon Kwak, Sangcheon Youn
  • Publication number: 20170315399
    Abstract: There is provided a flexible display having a new wire structure and a new insulating layer structure. A flexible display includes a flexible substrate having a first area and a second area. The second area is curved in a non-zero angle relative to the plane of the first area. The flexible display further includes a plurality of wires that extend over from the first area to the second area of the flexible substrate. Each of the wires is covered by an upper insulating pattern, which is separated from other upper insulating pattern. Each upper insulating pattern covering the wire has substantially the same trace pattern shape of the corresponding wire thereunder. Accordingly, by adopting the above-described wire structure and upper insulating layer structure, crack generation and propagation in the wires and the insulating layers from bending of the flexible display can be minimized.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Inventors: Seyeoul KWON, Sang Hyeon KWAK, Sangcheon YOUN
  • Patent number: 9740035
    Abstract: There is provided a flexible display having a new wire structure and a new insulating layer structure. A flexible display includes a flexible substrate having a first area and a second area. The second area is curved in a non-zero angle relative to the plane of the first area. The flexible display further includes a plurality of wires that extend over from the first area to the second area of the flexible substrate. Each of the wires is covered by an upper insulating pattern, which is separated from other upper insulating pattern. Each upper insulating pattern covering the wire has substantially the same trace pattern shape of the corresponding wire thereunder. Accordingly, by adopting the above-described wire structure and upper insulating layer structure, crack generation and propagation in the wires and the insulating layers from bending of the flexible display can be minimized.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: August 22, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Seyeoul Kwon, Sang Hyeon Kwak, Sangcheon Youn
  • Patent number: 9491829
    Abstract: An OLED display device is provided. The OLED display device may include a first capacitor connected between a data line and a first node, a first transistor connected to the first node and a second node, an OLED connected between a low-level source voltage terminal and a third node, a second transistor connected to the second and third nodes, a driving transistor, and a second capacitor. The driving transistor may have a gate connected to the first node, a drain connected to the second node, and a source connected to a high-level source voltage terminal. One end of the second capacitor may receive a second scan signal, and the other end of the second capacitor may be connected to the second node.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: November 8, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Sang Hyeon Kwak, Juhn Suk Yoo
  • Patent number: 9330603
    Abstract: Discussed is an OLED display device that can compensate for the deviation of a threshold voltage and also prevent deterioration of an OLED, and a method of driving the same, wherein the OLED display device includes first to fifth transistors, a driving transistor including gate, source and drain electrodes, a capacitor for sensing a threshold voltage of the driving transistor, and an OLED.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: May 3, 2016
    Assignee: LG Display Co., Ltd.
    Inventor: Sang Hyeon Kwak
  • Patent number: 9105213
    Abstract: An OLED display device is provided. The OLED display device may include a first capacitor connected between a data line and a first node, a first transistor connected to the first node and a second node, an OLED connected between a low-level source voltage terminal and a third node, a second transistor connected to the second and third nodes, a driving transistor, and a second capacitor. The driving transistor may have a gate connected to the first node, a drain connected to the second node, and a source connected to a high-level source voltage terminal. One end of the second capacitor may receive a control signal, and the other end of the second capacitor may be connected to the first node.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: August 11, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Sang Hyeon Kwak
  • Publication number: 20140232956
    Abstract: There is provided a flexible display having a new wire structure and a new insulating layer structure. A flexible display includes a flexible substrate having a first area and a second area. The second area is curved in a non-zero angle relative to the plane of the first area. The flexible display further includes a plurality of wires that extend over from the first area to the second area of the flexible substrate. Each of the wires is covered by an upper insulating pattern, which is separated from other upper insulating pattern. Each upper insulating pattern covering the wire has substantially the same trace pattern shape of the corresponding wire thereunder. Accordingly, by adopting the above-described wire structure and upper insulating layer structure, crack generation and propagation in the wires and the insulating layers from bending of the flexible display can be minimized.
    Type: Application
    Filed: February 12, 2014
    Publication date: August 21, 2014
    Applicant: LG Display Co., Ltd.
    Inventors: Seyeoul Kwon, Sang Hyeon Kwak, Sangcheon Youn
  • Publication number: 20140145918
    Abstract: Discussed is an OLED display device that can compensate for the deviation of a threshold voltage and also prevent deterioration of an OLED, and a method of driving the same, wherein the OLED display device includes first to fifth transistors, a driving transistor including gate, source and drain electrodes, a capacitor for sensing a threshold voltage of the driving transistor, and an OLED.
    Type: Application
    Filed: August 7, 2013
    Publication date: May 29, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventor: Sang Hyeon KWAK
  • Publication number: 20140049180
    Abstract: An OLED display device is provided. The OLED display device may include a first capacitor connected between a data line and a first node, a first transistor connected to the first node and a second node, an OLED connected between a low-level source voltage terminal and a third node, a second transistor connected to the second and third nodes, a driving transistor, and a second capacitor. The driving transistor may have a gate connected to the first node, a drain connected to the second node, and a source connected to a high-level source voltage terminal. One end of the second capacitor may receive a second scan signal, and the other end of the second capacitor may be connected to the second node.
    Type: Application
    Filed: November 14, 2012
    Publication date: February 20, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sang Hyeon Kwak, Juhn Suk Yoo
  • Publication number: 20140049531
    Abstract: An OLED display device is provided. The OLED display device may include a first capacitor connected between a data line and a first node, a first transistor connected to the first node and a second node, an OLED connected between a low-level source voltage terminal and a third node, a second transistor connected to the second and third nodes, a driving transistor, and a second capacitor. The driving transistor may have a gate connected to the first node, a drain connected to the second node, and a source connected to a high-level source voltage terminal. One end of the second capacitor may receive a control signal, and the other end of the second capacitor may be connected to the first node.
    Type: Application
    Filed: November 14, 2012
    Publication date: February 20, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventor: Sang Hyeon Kwak