Patents by Inventor Jae-Won Uhm

Jae-Won Uhm 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).

  • Luminance compensation apparatus for organic light emitting diode panel
    Patent number: 9552776
    Abstract: Disclosed is a luminance compensation apparatus of an organic light emitting diode panel including a reference pixel element unit that is installed at an outer peripheral portion of a display area on an organic light emitting diode panel and operate corresponding to a pixel element aligned in the display area, and a driving chip that is provided in an area including the reference pixel element unit of the outer peripheral portion of the display area, compares a luminance value of light incident from the reference pixel element unit with a reference luminance value to calculate a luminance deviation value based on a comparison result, controls driving of pixel elements aligned in the display area according to the luminance deviation value, and allows light, luminance deviation of which has been compensated, to be irradiated.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: January 24, 2017
    Assignee: SILICONFILE TECHNOLOGIES INC.
    Inventors: Do-Young Lee, Jae-Won Uhm
  • Pixel circuit for global shutter of substrate stacked image sensor
    Patent number: 9324746
    Abstract: A pixel circuit for a global shutter of a substrate-stacked image sensor may include a semiconductor chip including: a photodiode configured to output electric charges generated through a light sensing operation; and a reset node configured to receive a reset voltage from a reset voltage node and reset the photodiode. The semiconductor chip may have a structure in which the semiconductor chip is stacked over another semiconductor chip.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 26, 2016
    Assignee: SILICONFILE TECHNOLOGIES INC.
    Inventors: Jin Eun Choi, Jae Won Uhm, Seung Hoon Sa
  • PIXEL CIRCUIT FOR GLOBAL SHUTTER OF SUBSTRATE STACKED IMAGE SENSOR
    Publication number: 20150084098
    Abstract: A pixel circuit for a global shutter of a substrate-stacked image sensor may include a semiconductor chip including: a photodiode configured to output electric charges generated through a light sensing operation; and a reset node configured to receive a reset voltage from a reset voltage node and reset the photodiode. The semiconductor chip may have a structure in which the semiconductor chip is stacked over another semiconductor chip.
    Type: Application
    Filed: September 26, 2014
    Publication date: March 26, 2015
    Inventors: Jin Eun Choi, Jae Won Uhm, Seung Hoon Sa
  • LUMINANCE COMPENSATION APPARATUS FOR ORGANIC LIGHT EMITTING DIODE PANEL
    Publication number: 20150042694
    Abstract: Disclosed is a luminance compensation apparatus of an organic light emitting diode panel including a reference pixel element unit that is installed at an outer peripheral portion of a display area on an organic light emitting diode panel and operate corresponding to a pixel element aligned in the display area, and a driving chip that is provided in an area including the reference pixel element unit of the outer peripheral portion of the display area, compares a luminance value of light incident from the reference pixel element unit with a reference luminance value to calculate a luminance deviation value based on a comparison result, controls driving of pixel elements aligned in the display area according to the luminance deviation value, and allows light, luminance deviation of which has been compensated, to be irradiated.
    Type: Application
    Filed: December 26, 2012
    Publication date: February 12, 2015
    Inventors: Do-Young Lee, Jae-Won Uhm