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).
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Patent number: 9443639Abstract: 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: GrantFiled: August 1, 2014Date of Patent: September 13, 2016Assignee: Ajou University Industry-Academic Cooperation FoundationInventors: Suck Hyun Lee, O Pil Kwon, Jae Eun Um, Tae Ja Kim
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Patent number: 9077987Abstract: 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: GrantFiled: December 16, 2011Date of Patent: July 7, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jun-Pyo Lee, Eui-Jeong Kang, Jae-Eun Um, Hwan-Woong Lee, Kang-Min Kim, Jung-Won Kim
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Patent number: 9013393Abstract: 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: GrantFiled: April 6, 2009Date of Patent: April 21, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jae-Eun Um, Jin-Taek Hong
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Publication number: 20150076416Abstract: 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: ApplicationFiled: August 1, 2014Publication date: March 19, 2015Inventors: Suck Hyun Lee, O Pil Kwon, Jae Eun Um, Tae Ja Kim
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Patent number: 8896515Abstract: 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: GrantFiled: May 28, 2008Date of Patent: November 25, 2014Assignee: Samsung Display Co., Ltd.Inventor: Jae-Eun Um
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Patent number: 8613522Abstract: 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: GrantFiled: August 4, 2011Date of Patent: December 24, 2013Assignee: Samsung Display Co., Ltd.Inventors: Won-Hyoung Kang, Min-Gyu Kim, Jae-Eun Um, Kyun-ho Kim
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Patent number: 8471499Abstract: 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: GrantFiled: August 19, 2011Date of Patent: June 25, 2013Assignee: Samsung Display Co., Ltd.Inventors: Jae Eun Um, Ja Min Koo, Jae Kyu Park
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Publication number: 20120256554Abstract: 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: ApplicationFiled: August 19, 2011Publication date: October 11, 2012Inventors: Jae Eun Um, Ja Min Koo, Jae Kyu Park
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Publication number: 20120256908Abstract: 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: ApplicationFiled: December 16, 2011Publication date: October 11, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jun-Pyo LEE, Eui-Jeong KANG, Jae-Eun UM, Hwan-Woong LEE, Kang-Min KIM, Jung-Won KIM
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Publication number: 20120206903Abstract: 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: ApplicationFiled: August 4, 2011Publication date: August 16, 2012Inventors: Won-Hyoung Kang, Min-Gyu KIM, Jae-Eun UM, Kyun-ho KIM
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Patent number: 8111005Abstract: 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: GrantFiled: December 15, 2008Date of Patent: February 7, 2012Assignee: Samsung Electronics Co., LtdInventors: Min-Soo Choi, Jae-Eun Um
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Patent number: 7868972Abstract: 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: GrantFiled: February 5, 2008Date of Patent: January 11, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Min-soo Choi, Jae-eun Um, Song-yi Han
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Publication number: 20100039456Abstract: 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: ApplicationFiled: April 6, 2009Publication date: February 18, 2010Inventors: Jae-Eun UM, Jin-Taek HONG
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Publication number: 20090184667Abstract: 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: ApplicationFiled: December 15, 2008Publication date: July 23, 2009Inventors: Min-Soo Choi, Jae-Eun Um
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Publication number: 20090109164Abstract: 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: ApplicationFiled: May 28, 2008Publication date: April 30, 2009Applicant: SAMSUNG ELECTRONICS CO., LTDInventor: Jae-Eun UM
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Publication number: 20080204398Abstract: 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: ApplicationFiled: February 25, 2008Publication date: August 28, 2008Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Eui-Dong HWANG, Jae-Eun UM, Pil-Nam LIM
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Publication number: 20080198299Abstract: 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: ApplicationFiled: February 5, 2008Publication date: August 21, 2008Applicant: SAMSUNG ELECTRONICS CO., LTDInventors: Min-soo CHOI, Jae-eun UM, Song-yi HAN