Patents by Inventor Jae-eun Um

Jae-eun Um 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: 9443639
    Abstract: The embodiments described herein pertain generally to a conductive polymer blend composition including a polymer-deaggregating agent and a method for preparing the same.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: September 13, 2016
    Assignee: Ajou University Industry-Academic Cooperation Foundation
    Inventors: Suck Hyun Lee, O Pil Kwon, Jae Eun Um, Tae Ja Kim
  • Patent number: 9077987
    Abstract: A method of displaying a three-dimensional image includes sequentially providing light to display blocks of a display panel in a scan direction of an image, providing light at a maximum luminance to a display block during a first period in which an image for a left-eye or a right-eye is displayed on the display block, providing the light at a luminance gradually decreasing from the maximum luminance to a preset luminance to the display block during a second period in which a transition image between the left-eye or the right-eye image and a black image is displayed on the display block, and blocking the light from the display block during a third period including a period in which the black image is displayed on the display block and prior to a period in which a left-eye or a right-eye image of a following frame is displayed on the display block.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: July 7, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun-Pyo Lee, Eui-Jeong Kang, Jae-Eun Um, Hwan-Woong Lee, Kang-Min Kim, Jung-Won Kim
  • Patent number: 9013393
    Abstract: In a method of driving a light source of a light source module including a plurality of driving blocks, an image signal is analyzed and a target luminance corresponding to each of the driving blocks is determined. A dimming level of each of the driving blocks is determined by using the target luminance. A driving signal is generated, and the driving signal has a pulse width based on the dimming level and a variable frequency in accordance with a processing mode of the image signal. The driving block is driven by using the driving signal.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: April 21, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Eun Um, Jin-Taek Hong
  • Publication number: 20150076416
    Abstract: The embodiments described herein pertain generally to a conductive polymer blend composition including a polymer-deaggregating agent and a method for preparing the same.
    Type: Application
    Filed: August 1, 2014
    Publication date: March 19, 2015
    Inventors: Suck Hyun Lee, O Pil Kwon, Jae Eun Um, Tae Ja Kim
  • Patent number: 8896515
    Abstract: A backlight apparatus includes a first backlight part and a second backlight part. The first backlight part includes a plurality of first lamps. The second backlight part includes a plurality of second lamps. At least one first lamp of the first lamps is disposed between two second lamps of the second lamps.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: November 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jae-Eun Um
  • Patent number: 8613522
    Abstract: A power supplying module includes a printed circuit board (PCB), a transformer, a circuit pattern, and an output terminal. The PCB includes a first socket connector protruded from a side toward a second direction. The side extends along a first direction different from the second direction. At least one corner portion of the first socket connector includes a chamfered edge connecting first and second edges respectively extending in the first and second directions. The transformer is formed on the PCB. The circuit pattern is formed on the PCB and connected to the transformer. The output terminal is formed at the first socket connector and connected to the circuit pattern.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: December 24, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won-Hyoung Kang, Min-Gyu Kim, Jae-Eun Um, Kyun-ho Kim
  • Patent number: 8471499
    Abstract: A light emitting diode (LED) driver is provided that includes a light emitting diode, a converter connected to the light emitting diode, wherein the converter receives an input voltage and converts the input voltage to a basic voltage for driving the light emitting diode, a current regulator connected to the light emitting diode, a first operational amplifier connected to the current regulator, an analog dimming voltage generating unit including a second operational amplifier, a first resistor, a second resistor, and a third resistor, wherein a first terminal of the first resistor, a first terminal of the second resistor, and a first terminal of the third resistor are connected to a non-inversion terminal of the second operational amplifier, and connected to the first operational amplifier, and a pulse-width-modulation dimming pulse generating unit connected to a second terminal of the third resistor.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: June 25, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Eun Um, Ja Min Koo, Jae Kyu Park
  • Publication number: 20120256554
    Abstract: A light emitting diode (LED) driver is provided that includes a light emitting diode, a converter connected to the light emitting diode, wherein the converter receives an input voltage and converts the input voltage to a basic voltage for driving the light emitting diode, a current regulator connected to the light emitting diode, a first operational amplifier connected to the current regulator, an analog dimming voltage generating unit including a second operational amplifier, a first resistor, a second resistor, and a third resistor, wherein a first terminal of the first resistor, a first terminal of the second resistor, and a first terminal of the third resistor are connected to a non-inversion terminal of the second operational amplifier, and connected to the first operational amplifier, and a pulse-width-modulation dimming pulse generating unit connected to a second terminal of the third resistor.
    Type: Application
    Filed: August 19, 2011
    Publication date: October 11, 2012
    Inventors: Jae Eun Um, Ja Min Koo, Jae Kyu Park
  • Publication number: 20120256908
    Abstract: A method of displaying a three-dimensional image includes sequentially providing light to display blocks of a display panel in a scan direction of an image, providing light at a maximum luminance to a display block during a first period in which an image for a left-eye or a right-eye is displayed on the display block, providing the light at a luminance gradually decreasing from the maximum luminance to a preset luminance to the display block during a second period in which a transition image between the left-eye or the right-eye image and a black image is displayed on the display block, and blocking the light from the display block during a third period including a period in which the black image is displayed on the display block and prior to a period in which a left-eye or a right-eye image of a following frame is displayed on the display block.
    Type: Application
    Filed: December 16, 2011
    Publication date: October 11, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun-Pyo LEE, Eui-Jeong KANG, Jae-Eun UM, Hwan-Woong LEE, Kang-Min KIM, Jung-Won KIM
  • Publication number: 20120206903
    Abstract: A power supplying module includes a printed circuit board (PCB), a transformer, a circuit pattern, and an output terminal. The PCB includes a first socket connector protruded from a side toward a second direction. The side extends along a first direction different from the second direction. At least one corner portion of the first socket connector includes a chamfered edge connecting first and second edges respectively extending in the first and second directions. The transformer is formed on the PCB. The circuit pattern is formed on the PCB and connected to the transformer. The output terminal is formed at the first socket connector and connected to the circuit pattern.
    Type: Application
    Filed: August 4, 2011
    Publication date: August 16, 2012
    Inventors: Won-Hyoung Kang, Min-Gyu KIM, Jae-Eun UM, Kyun-ho KIM
  • Patent number: 8111005
    Abstract: In a voltage supply module and a backlight assembly having the same, a converter is disposed on a first face of a board and converts basic voltage into driving voltage. A capacitor includes at least one first electrode connected to an output line of the converter and at least one second electrode disposed to be spaced apart from the first electrode along a direction substantially parallel with the first face. A plurality of the second electrodes are disposed on the board between the first electrodes. The first and second electrodes form a ballast capacitance.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: February 7, 2012
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Min-Soo Choi, Jae-Eun Um
  • Patent number: 7868972
    Abstract: A light source unit which can minimize current differences between a plurality of light emitting diodes (“LEDs”) includes a printed circuit board (“PCB”) which includes an active region that emits light and an inactive region that accounts for a remainder of the PCB, an LED array which includes a plurality of LEDs that are arranged at regular intervals, and a current balancing circuit which is disposed in the inactive region, generates a plurality of current balancing voltages by uniformly adjusting current differences between the LEDs, and outputs the current balancing voltages. A liquid crystal display (“LCD”) including the light source unit, and a method of minimizing current differences between a plurality of LEDs are further provided.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: January 11, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Min-soo Choi, Jae-eun Um, Song-yi Han
  • Publication number: 20100039456
    Abstract: In a method of driving a light source of a light source module including a plurality of driving blocks, an image signal is analyzed and a target luminance corresponding to each of the driving blocks is determined. A dimming level of each of the driving blocks is determined by using the target luminance. A driving signal is generated, and the driving signal has a pulse width based on the dimming level and a variable frequency in accordance with a processing mode of the image signal. The driving block is driven by using the driving signal.
    Type: Application
    Filed: April 6, 2009
    Publication date: February 18, 2010
    Inventors: Jae-Eun UM, Jin-Taek HONG
  • Publication number: 20090184667
    Abstract: In a voltage supply module and a backlight assembly having the same, a converter is disposed on a first face of a board and converts basic voltage into driving voltage. A capacitor includes at least one first electrode connected to an output line of the converter and at least one second electrode disposed to be spaced apart from the first electrode along a direction substantially parallel with the first face. A plurality of the second electrodes are disposed on the board between the first electrodes. The first and second electrodes form a ballast capacitance.
    Type: Application
    Filed: December 15, 2008
    Publication date: July 23, 2009
    Inventors: Min-Soo Choi, Jae-Eun Um
  • Publication number: 20090109164
    Abstract: A backlight apparatus includes a first backlight part and a second backlight part. The first backlight part includes a plurality of first lamps. The second backlight part includes a plurality of second lamps. At least one first lamp of the first lamps is disposed between two second lamps of the second lamps.
    Type: Application
    Filed: May 28, 2008
    Publication date: April 30, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventor: Jae-Eun UM
  • Publication number: 20080204398
    Abstract: A lamp driving circuit includes a power-generating section, a distribution sensing section and a feedback control section. The power-generating section generates a lamp driving power to drive a plurality of lamps. The distribution sensing section divides the lamp driving power to the plurality of lamps. The distribution sensing section senses the lamp driving power to generate a feedback signal. The feedback control section checks whether or not the plurality of lamps is lit. The feedback control section blocks the feedback signal from being reflected in the lamp driving power before the plurality of lamps is lit.
    Type: Application
    Filed: February 25, 2008
    Publication date: August 28, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Eui-Dong HWANG, Jae-Eun UM, Pil-Nam LIM
  • Publication number: 20080198299
    Abstract: A light source unit which can minimize current differences between a plurality of light emitting diodes (“LEDs”) includes a printed circuit board (“PCB”) which includes an active region that emits light and an inactive region that accounts for a remainder of the PCB, an LED array which includes a plurality of LEDs that are arranged at regular intervals, and a current balancing circuit which is disposed in the inactive region, generates a plurality of current balancing voltages by uniformly adjusting current differences between the LEDs, and outputs the current balancing voltages. A liquid crystal display (“LCD”) including the light source unit, and a method of minimizing current differences between a plurality of LEDs are further provided.
    Type: Application
    Filed: February 5, 2008
    Publication date: August 21, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD
    Inventors: Min-soo CHOI, Jae-eun UM, Song-yi HAN