Patents by Inventor Eui-dong Hwang
Eui-dong Hwang 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: 9672087Abstract: Exemplary embodiments of present invention relate to an error detecting apparatus for a gate driver improving a reliability of a display apparatus, a display apparatus having the error detecting apparatus, and a method of detecting an error of the gate driver using the error detecting apparatus. An exemplary embodiment discloses an error detecting apparatus including an error detecting part configured to receive a gate signal of a gate driver and determine whether a status of the gate driver is in a normal status or an error status based on the gate signal, a memory configured to store the status of the gate driver, and a signal outputting part configured to selectively output a clock signal and an error signal based on the status of the gate driver stored in the memory.Type: GrantFiled: July 15, 2014Date of Patent: June 6, 2017Assignee: Samsung Display Co., Ltd.Inventors: Jong-Jae Lee, Eui-Dong Hwang, Bon-Sung Koo, Jun-Dal Kim, Seung-Hwan Moon, Dong-Won Park
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Patent number: 9666135Abstract: Provided is a display device, including: a plurality of pixels; a scan driver connected to a plurality of scanning lines connected to the plurality of pixels; and a gate signal generator configured to determine a level of a gate-on voltage according to ambient temperature and to supply the gate-on voltage to the scan driver, wherein the gate signal generator is further configured to apply a hysteresis characteristic to a thermistor voltage to vary according to the ambient temperature.Type: GrantFiled: July 11, 2014Date of Patent: May 30, 2017Assignee: Samsung Display Co., Ltd.Inventors: Bon-Sung Koo, Jong Jae Lee, Eui-Dong Hwang, Jun Dal Kim, Yang Uk Nam
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Patent number: 9257099Abstract: A display device including a voltage generator is disclosed. The voltage generator includes an analog driving voltage generator to convert a source voltage from an external source to an analog driving voltage and to output the analog driving voltage through an output terminal, a capacitor connected between the output terminal and a ground voltage node, and a discharge circuit connected between the output terminal and the ground voltage node to discharge a current at the output terminal in response to a blank synchronization signal.Type: GrantFiled: January 2, 2013Date of Patent: February 9, 2016Assignee: Samsung Display Co., Ltd.Inventors: Bon-Sung Koo, Jong Jae Lee, Eui-Dong Hwang
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Publication number: 20150212378Abstract: A display device and manufacturing method thereof. The display device includes a first substrate and a second substrate formed to face each other; a liquid crystal layer between the first and second substrates; a plurality of gate wirings and data wirings intersecting each other to form a plurality of pixel regions on the second substrate; and a first ground wiring formed on the first substrate configured to block a surge voltage from being applied to the pixel regions.Type: ApplicationFiled: January 27, 2015Publication date: July 30, 2015Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Eui-Dong HWANG, Jeong Ho BANG, Yong Hwan PARK
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Publication number: 20150115826Abstract: Provided is a display device, including: a plurality of pixels; a scan driver connected to a plurality of scanning lines connected to the plurality of pixels; and a gate signal generator configured to determine a level of a gate-on voltage according to ambient temperature and to supply the gate-on voltage to the scan driver, wherein the gate signal generator is further configured to apply a hysteresis characteristic to a thermistor voltage to vary according to the ambient temperature.Type: ApplicationFiled: July 11, 2014Publication date: April 30, 2015Inventors: Bon-Sung KOO, Jong Jae LEE, Eui-Dong HWANG, Jun Dal KIM, Yang Uk NAM
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Publication number: 20150026506Abstract: Exemplary embodiments of present invention relate to an error detecting apparatus for a gate driver improving a reliability of a display apparatus, a display apparatus having the error detecting apparatus, and a method of detecting an error of the gate driver using the error detecting apparatus. An exemplary embodiment discloses an error detecting apparatus including an error detecting part configured to receive a gate signal of a gate driver and determine whether a status of the gate driver is in a normal status or an error status based on the gate signal, a memory configured to store the status of the gate driver, and a signal outputting part configured to selectively output a clock signal and an error signal based on the status of the gate driver stored in the memory.Type: ApplicationFiled: July 15, 2014Publication date: January 22, 2015Inventors: Jong-Jae LEE, Eui-Dong HWANG, Bon-Sung KOO, Jun-Dal KIM, Seung-Hwan MOON, Dong-Won PARK
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Publication number: 20140078188Abstract: A driving device of a display device includes: a reference voltage generator configured to receive a high potential power supply voltage, a low potential power supply voltage and a medium power supply voltage and to generate reference voltages between the high potential power supply voltage and the low potential power supply voltage, where the low potential power supply voltage is lower than the high potential power supply voltage, and the medium power supply voltage has a value between the high potential power supply voltage and the low potential power supply voltage; a gray reference voltage generator configured to receive and divide the reference voltages and to generate gray reference voltages; and a data driver configured to receive the gray reference voltages and the high and medium potential power supply voltages, and to generate data voltages using the gray reference voltages and the high and medium potential power supply voltages.Type: ApplicationFiled: January 14, 2013Publication date: March 20, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Eui-Dong HWANG, Bon-Sung KOO, Jun Dal KIM, Jong Jae LEE, Se Young HEO
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Publication number: 20140049528Abstract: A display device including a voltage generator is disclosed. The voltage generator includes an analog driving voltage generator to convert a source voltage from an external source to an analog driving voltage and to output the analog driving voltage through an output terminal, a capacitor connected between the output terminal and a ground voltage node, and a discharge circuit connected between the output terminal and the ground voltage node to discharge a current at the output terminal in response to a blank synchronization signal.Type: ApplicationFiled: January 2, 2013Publication date: February 20, 2014Applicant: Samsung Display Co., Ltd.Inventors: Bon-Sung KOO, Jong Jae LEE, Eui-Dong HWANG
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Patent number: 8300195Abstract: A balance board includes; a substrate, a first wire disposed on the substrate, a second wire disposed on the substrate and spaced apart from the first wire, a plurality of first balance coils connected to the first wire and which uniformly distribute a first power supply voltage, a plurality of second balance coils connected to the second wire and which uniformly distribute a second power supply voltage, and a conductive pattern disposed on the substrate and spaced apart from the first and second wires, wherein the first and second wires are disposed substantially in parallel with each other, the second wire being divided into a plurality of parts with respect to an area where the first wire and the second wire cross over one another and the plurality of parts of the second wire are connected by a plurality of jumper connectors overlapping the first wire.Type: GrantFiled: July 6, 2009Date of Patent: October 30, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Eui-Dong Hwang, Yun-Gun Lee, Dal-Jung Kwon, Myoung-Soo Kim, Byung-Kyou Min
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Patent number: 7990372Abstract: A power supply apparatus capable of reducing power consumption and a liquid crystal display including the power supply apparatus includes a first DC-AC converting unit enabled by a driving signal to convert a DC voltage into a first AC voltage, increase the first AC voltage, and supply the increased first AC voltage as a first power supply voltage; a switching unit which selectively transmits the driving signal in response to a selection signal; and a second DC-AC converting unit enabled by the driving signal selectively transmitted by the switching unit to convert the DC voltage into a second AC voltage, increase the second AC voltage, and supply the increased second AC voltage as a second power supply voltage.Type: GrantFiled: September 26, 2007Date of Patent: August 2, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Dal-jung Kwon, Moon-shik Kang, Young-sub Kwon, Eui-dong Hwang
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Patent number: 7880715Abstract: A display device and an inverter therefor are disclosed. The inverter has a main circuit board having a plurality of first circuit patterns and a plurality of second circuit patterns formed on a first side thereof, and a sub circuit board having first connecting patterns corresponding to the plurality of first circuit patterns formed on one side of the sub circuit board and second connecting patterns corresponding to the plurality of second circuit patterns formed on a second side thereof. The plurality of first circuit patterns are coupled with each other through the first connecting patterns, and the plurality of second circuit patterns are coupled with each other through the second connecting patterns. Thus, the present invention provides an inverter and a display device having the same, which are capable of being manufactured at a low production cost.Type: GrantFiled: February 20, 2007Date of Patent: February 1, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Eui-dong Hwang, Young-eun Lee, Young-sup Kwon, Dal-jung Kwon
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Publication number: 20100073271Abstract: A balance board includes; a substrate, a first wire disposed on the substrate, a second wire disposed on the substrate and spaced apart from the first wire, a plurality of first balance coils connected to the first wire and which uniformly distribute a first power supply voltage, a plurality of second balance coils connected to the second wire and which uniformly distribute a second power supply voltage, and a conductive pattern disposed on the substrate and spaced apart from the first and second wires, wherein the first and second wires are disposed substantially in parallel with each other, the second wire being divided into a plurality of parts with respect to an area where the first wire and the second wire cross over one another and the plurality of parts of the second wire are connected by a plurality of jumper connectors overlapping the first wire.Type: ApplicationFiled: July 6, 2009Publication date: March 25, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Eui-Dong HWANG, Yun-Gun LEE, Dal-Jung KWON, Myoung-Soo KIM, Byung-Kyou MIN
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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: 20080074578Abstract: A power supply apparatus capable of reducing power consumption and a liquid crystal display including the power supply apparatus includes a first DC-AC converting unit enabled by a driving signal to convert a DC voltage into a first AC voltage, increase the first AC voltage, and supply the increased first AC voltage as a first power supply voltage; a switching unit which selectively transmits the driving signal in response to a selection signal; and a second DC-AC converting unit enabled by the driving signal selectively transmitted by the switching unit to convert the DC voltage into a second AC voltage, increase the second AC voltage, and supply the increased second AC voltage as a second power supply voltage.Type: ApplicationFiled: September 26, 2007Publication date: March 27, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dal-jung KWON, Moon-shik KANG, Young-sub KWON, Eui-dong HWANG
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Publication number: 20080043462Abstract: A backlight assembly includes a plurality of lamps, a receiving container, and a reflective plate. The lamps are disposed substantially parallel with each other and generate light. The receiving container receives the lamps, and openings corresponding to the lamps are formed therein. The reflective plate is disposed between the lamps and the receiving container and reflects the light from the lamps. The reflective plate is formed from an insulating material.Type: ApplicationFiled: August 20, 2007Publication date: February 21, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dal-Jung Kwon, Moon-Shik Kang, Young-Sup Kwon, Eui-Dong Hwang
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Publication number: 20070234166Abstract: A display device and an inverter therefor are disclosed. The inverter has a main circuit board having a plurality of first circuit patterns and a plurality of second circuit patterns formed on a first side thereof, and a sub circuit board having first connecting patterns corresponding to the plurality of first circuit patterns formed on one side of the sub circuit board and second connecting patterns corresponding to the plurality of second circuit patterns formed on a second side thereof. The plurality of first circuit patterns are coupled with each other through the first connecting patterns, and the plurality of second circuit patterns are coupled with each other through the second connecting patterns. Thus, the present invention provides an inverter and a display device having the same, which are capable of being manufactured at a low production cost.Type: ApplicationFiled: February 20, 2007Publication date: October 4, 2007Inventors: Eui-dong Hwang, Young-eun Lee, Young-sup Kwon, Dal-jung Kwon
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Publication number: 20070194726Abstract: A lamp driving apparatus includes a lamp driving unit which is provided with a predetermined direct current (“DC”) voltage from an external source, converts the provided DC voltage into a first lamp driving voltage and a second lamp driving voltage, and provides the first lamp driving voltage and the second lamp driving voltage to a lamp, and a control unit which detects the first lamp driving voltage and the second lamp driving voltage and generates first detection signals based on the detected first lamp driving voltage and generates second detection signals based on the detected second lamp driving voltage, compares a test signal with a reference voltage, and generates a driving control signal according to the result of the comparison, wherein the test signal is obtained by merging the first detection signal and the second detection signal.Type: ApplicationFiled: February 21, 2007Publication date: August 23, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Eui-dong HWANG, Moon-shik KANG, Dal-jung KWON, Jae-seok GHO, Young-sup KWON
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Publication number: 20060279957Abstract: A lamp, lamp holder, and a power supply substrate that allow easy fabrication of a backlight assembly or a power supply module for a display device are presented. The lamp includes a lamp tube and an electrode that extends outside the lamp tube to form a lamp lead. The lamp holder includes a body for holding the lamp tube and a power supply member for providing voltage to the lamp lead. A power supply module includes a power supply substrate combined with a lamp holder holding the lamp. The lamp holders are fixed to fixing portions of the power supply substrate or to fixing holes of a connection plate. As the design allows easy separation of the lamp holders from the power supply substrate, building a backlight assembly or a display device is facilitated.Type: ApplicationFiled: June 9, 2006Publication date: December 14, 2006Inventors: Yoon-Soo Kwon, Jung-Tae Kang, Sang-Hoon Park, Jin-Ho Ha, Woong-Jae Chang, Yong-Seok Yang, Min-Ho Ok, Kyung-Rok Ko, Jae-Hwan Chun, Jae-Seok Gho, Dal-Jung Kwon, Moon-Shik Kang, Young-Sup Kwon, Eui-Dong Hwang