Patents by Inventor Uk Chang

Uk Chang 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: 11830801
    Abstract: The present disclosure relates to a chip on film package, in which communication wires for communication with a control circuit are disposed to traverse a semiconductor chip thereunder so as to simplify the wiring inside the semiconductor chip.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: November 28, 2023
    Assignee: LX SEMICON CO., LTD.
    Inventor: Young Uk Chang
  • Publication number: 20220199512
    Abstract: The present disclosure relates to a chip on film package, in which communication wires for communication with a control circuit are disposed to traverse a semiconductor chip thereunder so as to simplify the wiring inside the semiconductor chip.
    Type: Application
    Filed: November 15, 2021
    Publication date: June 23, 2022
    Inventor: Young Uk Chang
  • Patent number: 11222571
    Abstract: Disclosed is a system for a display, which drives pixels using a double rate driving (DRD) method. The system includes a timing controller configured to provide a data packet and a lock signal, and a plurality of drivers each configured to restore display data and a clock of the data packet and output a source signal corresponding to the display data using the clock. The lock signal is fed back to the timing controller via the plurality of drivers. Each of the drivers outputs an internal lock signal, obtained by updating the lock signal with information on a restored clock, in next order. Each of the drivers may operate in a low power mode.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: January 11, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hyun Woo Jeong, Young Uk Chang, Ju Ho Lee
  • Patent number: 11222572
    Abstract: Disclosed is a driving apparatus for a display, which drives pixels using a double rate driving (DRD) method. The driving apparatus includes a first latch circuit storing first pixel data, a second latch circuit storing second pixel data, a first selection circuit selecting one of the first pixel data and the second pixel data and outputting selection data, and a second selection circuit selecting one of the selection data of a pair of adjacent first selection units and outputting source data.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: January 11, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hyun Woo Jeong, Young Uk Chang, Ju Ho Lee
  • Publication number: 20210183291
    Abstract: Disclosed is a system for a display, which drives pixels using a double rate driving (DRD) method. The system includes a timing controller configured to provide a data packet and a lock signal, and a plurality of drivers each configured to restore display data and a clock of the data packet and output a source signal corresponding to the display data using the clock. The lock signal is fed back to the timing controller via the plurality of drivers. Each of the drivers outputs an internal lock signal, obtained by updating the lock signal with information on a restored clock, in next order. Each of the drivers may operate in a low power mode.
    Type: Application
    Filed: December 2, 2020
    Publication date: June 17, 2021
    Applicant: Silicon Works Co., Ltd.
    Inventors: Hyun Woo Jeong, Young Uk Chang, Ju Ho Lee
  • Publication number: 20210183292
    Abstract: Disclosed is a driving apparatus for a display, which drives pixels using a double rate driving (DRD) method. The driving apparatus includes a first latch circuit storing first pixel data, a second latch circuit storing second pixel data, a first selection circuit selecting one of the first pixel data and the second pixel data and outputting selection data, and a second selection circuit selecting one of the selection data of a pair of adjacent first selection units and outputting source data.
    Type: Application
    Filed: December 2, 2020
    Publication date: June 17, 2021
    Applicant: Silicon Works Co., Ltd.
    Inventors: Hyun Woo Jeong, Young Uk Chang, Ju Ho Lee
  • Patent number: 10747360
    Abstract: The present disclosure discloses a display device that performs a read operation corresponding to a touch based on a multipoint interface (MPI) protocol. In the display device, a microcontroller and a plurality of drivers share MPI buses and perform the read operation for a touch, and turning on of reception buffers may be efficiently controlled by providing a wake-up signal by a selected driver designated by a read command of the microcontroller to unselected drivers at the time of completion of transmission of touch data.
    Type: Grant
    Filed: May 3, 2019
    Date of Patent: August 18, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jong Min Park, Hun Yong Lim, Hyun Woo Jeong, Young Uk Chang, Chung Min Lee, Ha Na Choi
  • Publication number: 20190339808
    Abstract: The present disclosure discloses a display device that performs a read operation corresponding to a touch based on a multipoint interface (MPI) protocol. In the display device, a microcontroller and a plurality of drivers share MPI buses and perform the read operation for a touch, and turning on of reception buffers may be efficiently controlled by providing a wake-up signal by a selected driver designated by a read command of the microcontroller to unselected drivers at the time of completion of transmission of touch data.
    Type: Application
    Filed: May 3, 2019
    Publication date: November 7, 2019
    Applicant: SILICON WORKS CO., LTD.
    Inventors: Jong Min PARK, Hun Yong LIM, Hyun Woo JEONG, Young Uk CHANG, Chung Min LEE, Ha Na CHOI
  • Patent number: 10115479
    Abstract: A memory device that includes a memory cell array and control circuit in which the memory cell array includes a normal region including a first failed block and a redundant region including a first redundant block replacing the first failed block. The control circuit includes a mapping table storing replacement information. The control circuit refers to the mapping table for accessing the first redundant block. When testing the memory device, the control circuit writes “1” in the normal region and the first redundant block, writes “0” in the redundant region except the first redundant block, adds the replacement information regarding a second failed block and second redundant block in the redundant region to the mapping table and verifies the result of replacing the second failed block with the second redundant block based on entire data read from the memory cell array with respect to entire range assigned to the address signal.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: October 30, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok-Jung Kim, Young-Uk Chang
  • Publication number: 20170148529
    Abstract: A memory device that includes a memory cell array and control circuit in which the memory cell array includes a normal region including a first failed block and a redundant region including a first redundant block replacing the first failed block. The control circuit includes a mapping table storing replacement information. The control circuit refers to the mapping table for accessing the first redundant block. When testing the memory device, the control circuit writes “1” in the normal region and the first redundant block, writes “0” in the redundant region except the first redundant block, adds the replacement information regarding a second failed block and second redundant block in the redundant region to the mapping table and verifies the result of replacing the second failed block with the second redundant block based on entire data read from the memory cell array with respect to entire range assigned to the address signal.
    Type: Application
    Filed: August 29, 2016
    Publication date: May 25, 2017
    Inventors: Seok-Jung KIM, Young-Uk CHANG
  • Patent number: 8730751
    Abstract: A semiconductor memory device for controlling an operation of a delay-locked loop (DLL) circuit is provided. The semiconductor memory device includes a DLL circuit that receives an external clock signal and that performs a locking operation on the external clock signal and an internal clock signal, thereby obtaining a locked state. A control unit controls the DLL circuit to constantly maintain the locked state during an updating period of an auto-refresh period of an auto-refresh operation for refreshing memory banks.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: May 20, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-Bae Kim, Seong-Jin Jang, Young-Uk Chang, Sin-Ho Kim
  • Publication number: 20120218848
    Abstract: A semiconductor memory device for controlling an operation of a delay-locked loop (DLL) circuit is provided. The semiconductor memory device includes a DLL circuit that receives an external clock signal and that performs a locking operation on the external clock signal and an internal clock signal, thereby obtaining a locked state. A control unit controls the DLL circuit to constantly maintain the locked state during an updating period of an auto-refresh period of an auto-refresh operation for refreshing memory banks.
    Type: Application
    Filed: May 9, 2012
    Publication date: August 30, 2012
    Inventors: JUN-BAE KIM, Seong-Jin Jang, Young-Uk Chang, Sin-Ho Kim
  • Patent number: 8184495
    Abstract: A semiconductor memory device for controlling an operation of a delay-locked loop (DLL) circuit includes a DLL circuit that receives an external clock signal and that performs a locking operation on the external clock signal and an internal clock signal, thereby obtaining a locked state. A control unit controls the DLL circuit to constantly maintain the locked state during an updating period of an auto-refresh period of an auto-refresh operation for refreshing memory banks.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: May 22, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jun-Bae Kim, Seong-Jin Jang, Young-Uk Chang, Sin-Ho Kim
  • Patent number: D676365
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: February 19, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ben Uk Chang, William L. Chergosky
  • Patent number: D697853
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: January 21, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ben Uk Chang, Alan Robert Schneider
  • Patent number: D705144
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: May 20, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kaoru Ishikawa, Takashi Ueshin, Ben Uk Chang
  • Patent number: D705145
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: May 20, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: William Mangan, Ben Uk Chang
  • Patent number: D786758
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: May 16, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ben Uk Chang, Yoshiko Hayashi, Yuta Nozaki, Atsuro Nakano
  • Patent number: D840305
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: February 12, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ben Uk Chang, William Luther Chergosky, Kiminori Kanda
  • Patent number: D853919
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: July 16, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Saburo Hazumi, Atsushi Hirose, Ben Uk Chang