Patents by Inventor Byung Jae NAM

Byung Jae NAM 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: 9905185
    Abstract: A column driver of a display device provides a high slew rate with lowered power requirements by using external switches connected to upper and bottom output buffers. The upper output buffer is driven between a first voltage rail and a second voltage rail, and outputs a first output signal in response to a first input signal and a second input signal. The bottom output buffer is driven between the second voltage rail and a third voltage rail, and outputs a second output signal in response to a third input signal and a fourth input signal. A first switch group selectively provides input for the upper output buffer and the bottom output buffer. A second switch group feeds back the first and the second output signals to the first or the second input terminal of each of the upper output buffer and the bottom output buffer.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: February 27, 2018
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Chang Ho Ahn, Byung Jae Nam, Sang Hyun Park, Jae Hong Ko, Hyun Jin Shin
  • Publication number: 20170323614
    Abstract: A column driver of a display device provides a high slew rate with lowered power requirements by using external switches connected to upper and bottom output buffers. The upper output buffer is driven between a first voltage rail and a second voltage rail, and outputs a first output signal in response to a first input signal and a second input signal. The bottom output buffer is driven between the second voltage rail and a third voltage rail, and outputs a second output signal in response to a third input signal and a fourth input signal. A first switch group selectively provides input for the upper output buffer and the bottom output buffer. A second switch group feeds back the first and the second output signals to the first or the second input terminal of each of the upper output buffer and the bottom output buffer.
    Type: Application
    Filed: July 25, 2017
    Publication date: November 9, 2017
    Applicant: MagnaChip Semiconductor, Ltd.
    Inventors: Chang Ho AHN, Byung Jae NAM, Sang Hyun PARK, Jae Hong KO, Hyun Jin SHIN
  • Patent number: 9767749
    Abstract: A column driver of a display device provides a high slew rate with lowered power requirements by using external switches connected to upper and bottom output buffers. The upper output buffer is driven between a first voltage rail and a second voltage rail, and outputs a first output signal in response to a first input signal and a second input signal. The bottom output buffer is driven between the second voltage rail and a third voltage rail, and outputs a second output signal in response to a third input signal and a fourth input signal. A first switch group selectively provides input for the upper output buffer and the bottom output buffer. A second switch group feeds back the first and the second output signals to the first or the second input terminal of each of the upper output buffer and the bottom output buffer.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: September 19, 2017
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Chang Ho Ahn, Byung Jae Nam, Sang Hyun Park, Jae Hong Ko, Hyun Jin Shin
  • Patent number: 9711074
    Abstract: An apparatus and a method that quickly detect an error that may occur due to an external noise occurrence during display of image data on a screen of an image display device, and that control a strobe signal output to prevent a screen defect from being displayed on the display device screen.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: July 18, 2017
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Jae Hong Ko, Shin Yoon, Byung Jae Nam, Chang Ho Ahn, Sang Hyun Park
  • Publication number: 20160104401
    Abstract: An apparatus and a method that quickly detect an error that may occur due to an external noise occurrence during display of image data on a screen of an image display device, and that control a strobe signal output to prevent a screen defect from being displayed on the display device screen.
    Type: Application
    Filed: March 18, 2015
    Publication date: April 14, 2016
    Inventors: Jae Hong KO, Shin YOON, Byung Jae NAM, Chang Ho AHN, Sang Hyun PARK
  • Patent number: 9007104
    Abstract: There is provided an apparatus for output buffering having a half-swing rail-to-rail structure. The apparatus provides output buffering by using a switch structure in order to attain a high slew rate and low power characteristics, thereby reducing current consumption. The provided apparatus for output buffering having a half-swing rail-to-rail structure includes a first output buffer, driven between a first voltage rail and a second voltage rail and outputting a first output signal in response to a first input signal and a second input signal, and a second output buffer, driven between the first and the second voltage rails and a third voltage rail and outputting a second output signal in response to a third input signal and a fourth input signal.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: April 14, 2015
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Chang Ho Ahn, Byung Jae Nam, Sang Hyun Park, Jae Hong Ko, Hyun Jin Shin
  • Publication number: 20140313114
    Abstract: A column driver of a display device provides a high slew rate with lowered power requirements by using external switches connected to upper and bottom output buffers. The upper output buffer is driven between a first voltage rail and a second voltage rail, and outputs a first output signal in response to a first input signal and a second input signal. The bottom output buffer is driven between the second voltage rail and a third voltage rail, and outputs a second output signal in response to a third input signal and a fourth input signal. A first switch group selectively provides input for the upper output buffer and the bottom output buffer. A second switch group feeds back the first and the second output signals to the first or the second input terminal of each of the upper output buffer and the bottom output buffer.
    Type: Application
    Filed: March 5, 2014
    Publication date: October 23, 2014
    Applicant: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Chang Ho AHN, Byung Jae NAM, Sang Hyun PARK, Jae Hong KO, Hyun Jin SHIN
  • Publication number: 20140312949
    Abstract: There is provided an apparatus for output buffering having a half-swing rail-to-rail structure. The apparatus provides output buffering by using a switch structure in order to attain a high slew rate and low power characteristics, thereby reducing current consumption. The provided apparatus for output buffering having a half-swing rail-to-rail structure includes a first output buffer, driven between a first voltage rail and a second voltage rail and outputting a first output signal in response to a first input signal and a second input signal, and a second output buffer, driven between the first and the second voltage rails and a third voltage rail and outputting a second output signal in response to a third input signal and a fourth input signal.
    Type: Application
    Filed: March 6, 2014
    Publication date: October 23, 2014
    Applicant: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Chang Ho AHN, Byung Jae NAM, Sang Hyun PARK, Jae Hong KO, Hyun Jin SHIN