Patents by Inventor Nam-suk Bang
Nam-suk Bang 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: 9275591Abstract: A liquid crystal display includes a gate driver including stages, and a clock generator which receives a clock generation control signal, generates a clock signal and a clock bar signal based on one or more of the clock generation control signal, a gate-on voltage and a gate-off voltage, and outputs the clock signal and the clock bar signal to the gate driver. The clock generator includes an overcurrent protector unit which intercepts at least one of the clock signal and the clock bar signal when a voltage level of at least one of the gate-on voltage and the gate-off voltage is greater than a reference level.Type: GrantFiled: February 18, 2014Date of Patent: March 1, 2016Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Nam-Suk Bang, Hyun-Sang Cho, Joo-Hwan Park, Jae-Seob Chung
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Patent number: 8884995Abstract: A system for compensating for gamma data is provided comprising a display panel including at least one feedback line connected to at least one pixel, a gray voltage generator generating a reference gray voltage based on first gamma data, a data driver generating a data voltage based on the reference gray voltage and applying the generated data voltage to a data line, a multiplexer receiving at least one feedback voltage from the at least one feedback line and selecting a feedback voltage from the received at least one feedback voltage and outputting the selected feedback voltage, an A/D converter converting the selected feedback voltage into feedback data, and a signal controller storing the feedback data as feedback gamma data for the entire grays and compensating for the first gamma data based on the feedback gamma data.Type: GrantFiled: November 4, 2011Date of Patent: November 11, 2014Assignee: Samsung Display Co., Ltd.Inventors: Young-Sun Kwak, Nam-Suk Bang, Ji-Won Kim, Won-Hee Lee
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Publication number: 20140160110Abstract: A liquid crystal display includes a gate driver including stages, and a clock generator which receives a clock generation control signal, generates a clock signal and a clock bar signal based on one or more of the clock generation control signal, a gate-on voltage and a gate-off voltage, and outputs the clock signal and the clock bar signal to the gate driver. The clock generator includes an overcurrent protector unit which intercepts at least one of the clock signal and the clock bar signal when a voltage level of at least one of the gate-on voltage and the gate-off voltage is greater than a reference level.Type: ApplicationFiled: February 18, 2014Publication date: June 12, 2014Applicant: Samsung Display Co., Ltd.Inventors: Nam-Suk BANG, Hyun-Sang CHO, Joo-Hwan PARK, Jae-Seob CHUNG
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Patent number: 8692757Abstract: A liquid crystal display includes a gate driver including stages, and a clock generator which receives a clock generation control signal, generates a clock signal and a clock bar signal based on one or more of the clock generation control signal, a gate-on voltage and a gate-off voltage, and outputs the clock signal and the clock bar signal to the gate driver. The clock generator includes an overcurrent protector unit which intercepts at least one of the clock signal and the clock bar signal when a voltage level of at least one of the gate-on voltage and the gate-off voltage is greater than a reference level.Type: GrantFiled: February 26, 2010Date of Patent: April 8, 2014Assignee: Samsung Display Co., Ltd.Inventors: Nam-Suk Bang, Hyun-Sang Cho, Joo-Hwan Park, Jae-Seob Chung
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Publication number: 20120320098Abstract: A system for compensating for gamma data is provided comprising a display panel including at least one feedback line connected to at least one pixel, a gray voltage generator generating a reference gray voltage based on first gamma data, a data driver generating a data voltage based on the reference gray voltage and applying the generated data voltage to a data line, a multiplexer receiving at least one feedback voltage from the at least one feedback line and selecting a feedback voltage from the received at least one feedback voltage and outputting the selected feedback voltage, an A/D converter converting the selected feedback voltage into feedback data, and a signal controller storing the feedback data as feedback gamma data for the entire grays and compensating for the first gamma data based on the feedback gamma data.Type: ApplicationFiled: November 4, 2011Publication date: December 20, 2012Inventors: YOUNG-SUN KWAK, Nam-Suk Bang, Ji-Won Kim, Won-Hee Lee
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Patent number: 8022910Abstract: A liquid crystal display includes a signal control unit which supplies an image signal; a voltage supply unit which outputs a first reference voltage when the image signal is not at a highest grayscale level and outputs a second reference voltage having a voltage level higher than that of the first reference voltage when the image signal is at the highest grayscale voltage level; a grayscale voltage generating unit which receives the first reference voltage or the second reference voltage and generates a plurality of positive- and negative-polarity grayscale voltages whose voltage levels sequentially decrease; and a data driving unit which receives the image signal, the plurality of positive- and negative-polarity grayscale voltages and applies an image data voltage corresponding to the image signal to a pixel.Type: GrantFiled: December 19, 2007Date of Patent: September 20, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Eun-kyung Kim, Nam-suk Bang, Hyun-suck Jeong
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Publication number: 20100220079Abstract: A liquid crystal display includes a gate driver including stages, and a clock generator which receives a clock generation control signal, generates a clock signal and a clock bar signal based on one or more of the clock generation control signal, a gate-on voltage and a gate-off voltage, and outputs the clock signal and the clock bar signal to the gate driver. The clock generator includes an overcurrent protector unit which intercepts at least one of the clock signal and the clock bar signal when a voltage level of at least one of the gate-on voltage and the gate-off voltage is greater than a reference level.Type: ApplicationFiled: February 26, 2010Publication date: September 2, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Nam-Suk BANG, Hyun-Sang CHO, Joo-Hwan PARK, Jae-Seob CHUNG
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Publication number: 20080170020Abstract: A liquid crystal display includes a signal control unit which supplies an image signal; a voltage supply unit which outputs a first reference voltage when the image signal is not at a highest grayscale level and outputs a second reference voltage having a voltage level higher than that of the first reference voltage when the image signal is at the highest grayscale voltage level; a grayscale voltage generating unit which receives the first reference voltage or the second reference voltage and generates a plurality of positive- and negative-polarity grayscale voltages whose voltage levels sequentially decrease; and a data driving unit which receives the image signal, the plurality of positive- and negative-polarity grayscale voltages and applies an image data voltage corresponding to the image signal to a pixel.Type: ApplicationFiled: December 19, 2007Publication date: July 17, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Eun-kyung KIM, Nam-suk BANG, Hyun-suck JEONG