Patents by Inventor Hee Won Ahn
Hee Won Ahn 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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Publication number: 20240133888Abstract: The present disclosure relates to a nanostructure for detecting viruses including an amphipathic polymer, and a diagnostic platform using the same, wherein the nanostructure is capable of specifically detecting viruses through silica-based nanoparticles with excellent stability and high dispersion and a biocompatible amphipathic polymer, such that it is possible to develop a diagnostic platform with high sensitivity through binding and agglomeration of the nanostructure and viruses and enable rapid and accurate diagnosis of a target virus.Type: ApplicationFiled: October 17, 2023Publication date: April 25, 2024Applicant: KNU-INDUSTRY COOPERATION FOUNDATIONInventors: HYUN OUK KIM, JAE WON CHOI, SO JIN SHIN, YU RIM AHN, HEE WON AN, MIN SE KIM, HAK SEON KIM
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Publication number: 20240134292Abstract: A substrate treatment apparatus according to an aspect of the present invention includes: a support plate that supports a substrate and is provided with a heater member for heating the substrate; and a cooling unit for forcedly cooling the support plate, wherein the cooling unit includes: a cooling housing to provide a cooling space; a plurality of gas feed nozzles that is arranged in the cooling housing and supplies cooling gas toward the heater member; and a plurality of gas feed lines that is directly connected to the gas feed nozzles and supplies the cooling gas transferred from the outside to the gas feed nozzles.Type: ApplicationFiled: October 4, 2023Publication date: April 25, 2024Applicant: SEMES CO., LTD.Inventors: Minhee CHO, Hee Man AHN, Gyeong Won SONG, Jumi LEE, Chun Woo PARK, Byung Hwi KIM
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Publication number: 20240091235Abstract: The present invention relates to use of a compound of chemical formula 1 or a pharmaceutically acceptable salt thereof as a selective agonist of the melanocortin-4-receptor (MC4R).Type: ApplicationFiled: December 21, 2021Publication date: March 21, 2024Applicant: LG CHEM, LTD.Inventors: Hee Dong PARK, Su Jin YEO, Hyun Seo PARK, Jin Sook PARK, Hye Won AHN
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Patent number: 9087485Abstract: Disclosed herein is a local dimming driving method and device of a Liquid Crystal Display (LCD) device, which is capable of preventing color change due to gray scale saturation when data is compensated while enabling local dimming. The local dimming driving method of the LCD device includes detecting maximum values per pixel from input image data, analyzing the maximum values per pixel on a block-by-block basis, and determining local dimming values per block according to the analysis result, calculating a first gain value using the local dimming values per block, calculating a maximum gain value per pixel using the maximum value per pixel as a second gain value, selecting a smaller value of the first and second gain values as a final gain value, compensating the input image data using the final gain value, and controlling luminance of a backlight unit on the block-by-block basis using the local dimming value per block.Type: GrantFiled: December 8, 2010Date of Patent: July 21, 2015Assignee: LG Display Co., Ltd.Inventors: Hee-Won Ahn, Si-Hoon Lee, Kyung-Joon Kwon, Kyo-Hyuck Choo
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Patent number: 8760385Abstract: A liquid crystal display device capable of improving a contrast ratio and of reducing a halo phenomenon with low power consumption and a method for local dimming driving the same are disclosed. A method for local dimming driving a liquid crystal display includes determining a local dimming value for each of light-emitting blocks based on analyzing input image data by the unit of light-emitting block provided in a backlight unit; determining a halo degree by analyzing a total light quantity of black pixels having black gradations in the input image data; adjusting the number of spatial filtering repetitions based on the determined halo degree; compensating the local dimming value by performing spatial filtering for the local dimming value an adjusted number of times; and controlling brightness of the backlight unit for each of the blocks by using the compensated local dimming value.Type: GrantFiled: July 7, 2011Date of Patent: June 24, 2014Assignee: LG Display Co., Ltd.Inventors: Kyung-Joon Kwon, Dong-Woo Kim, Hee-Won Ahn, Jung-Hwan Lee
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Patent number: 8670006Abstract: A local dimming driving method of the LCD device includes divisionally driving all of a plurality of blocks of a backlight unit using a maximum luminance signal and measuring luminance per block, setting one of the plurality of blocks as a reference block, detecting luminance deviations between the reference block and the residual blocks, and setting an offset value per block for compensating for the detected luminance deviations per block, analyzing an input image in units of blocks corresponding to the plurality of blocks of a backlight unit respectively, detecting a representative value per block, and determining a dimming value per block according to the representative value per block, correcting the dimming value per block using the offset value per block, and controlling the luminance of the backlight unit on a block-by-block basis using the corrected dimming value per block.Type: GrantFiled: September 16, 2010Date of Patent: March 11, 2014Assignee: LG Display Co., Ltd.Inventors: Hee-Jung Hong, Eui-Yeol Oh, Si-Hoon Lee, Hee-Won Ahn
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Patent number: 8654052Abstract: The present invention provides method and device for driving local dimming in a liquid crystal display device which enables adaptive application of a gradation roll-off according to an image characteristic.Type: GrantFiled: July 7, 2011Date of Patent: February 18, 2014Assignee: LG Display Co., Ltd.Inventors: Jung-Hwan Lee, Kyung-Joon Kwon, Dong-Woo Kim, Hee-Won Ahn
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Patent number: 8576159Abstract: A driving method for local dimming of a Liquid Crystal Display (LCD) device and an apparatus using the same are disclosed.Type: GrantFiled: June 30, 2010Date of Patent: November 5, 2013Assignee: LG Display Co., Ltd.Inventors: Dae-Ho Cho, Kyung-Joon Kwon, Hee-Won Ahn, Chang-Kyun Park
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Patent number: 8427419Abstract: Disclosed herein is a local dimming driving method and device of an LCD device, which is capable of minimizing luminance deviation at the same gray scale due to a dimming difference between blocks. The local dimming driving method of the LCD device includes analyzing input image data in units of blocks and determining a local dimming value per block, performing spatial filtering with respect to the local dimming value per block, repeating spatial filtering by a predetermined repeat count, and controlling luminance of a backlight unit on a block-by-block basis using the local dimming value per block controlled by spatial filtering.Type: GrantFiled: August 10, 2010Date of Patent: April 23, 2013Assignee: LG Display Co., Ltd.Inventors: Hee-Won Ahn, Hee-Jung Hong, Kyung-Joon Kwon, Dong-Woo Kim
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Patent number: 8363003Abstract: A method of driving a liquid crystal display device includes inputting source image data, each of which has one of m gray level values, wherein m is a natural number, defining T error data from the source image data, wherein the error data have top k gray level values, and T and k are a natural number, generating conversion image data having larger gray level values than the source image data using one having a largest gray level value from the source image data excluding the error data, inputting the conversion image data to a liquid crystal panel, controlling a brightness of a backlight unit in accordance with the conversion image data, forming a bitmap corresponding to the conversion image data, wherein the bitmap shows positional distribution of pixels with the error data, counting error areas by scanning the bitmap, wherein each of the error areas includes the predetermined number of the pixels having the error data, and controlling the T according to the number of the error.Type: GrantFiled: October 22, 2008Date of Patent: January 29, 2013Assignee: LG Display Co., Ltd.Inventors: Kyung-Joon Kwon, Hee-Won Ahn, Sung-Soo Kim
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Patent number: 8350798Abstract: A liquid crystal display device capable of improving reliability of a backlight unit is disclosed. The liquid crystal display device includes: a backlight dimming modulating unit configured to modulate an internal algorithm backlight dimming control signal using an external input algorithm backlight dimming control signal and to maintain a dimming duty equal to or wider than an allowable dimming range of a backlight unit; arithmetic unit configured to multiply the external input algorithm backlight dimming control signal by the modulated internal algorithm backlight dimming control signal and to output a final backlight dimming control signal; and a data modulating unit configured to modulate image data using the external input algorithm backlight dimming control signal corresponding to the modulated final backlight dimming control signal.Type: GrantFiled: November 11, 2009Date of Patent: January 8, 2013Assignee: LG Display Co., Ltd.Inventors: Hee Jung Hong, Kyung Joon Kwon, Hee Won Ahn, Dae Ho Cho
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Publication number: 20120056907Abstract: The present invention provides method and device for driving local dimming in a liquid crystal display device which enables adaptive application of a gradation roll-off according to an image characteristic.Type: ApplicationFiled: July 7, 2011Publication date: March 8, 2012Inventors: Jung-Hwan Lee, Kyung-Joon Kwon, Dong-Woo Kim, Hee-Won Ahn
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Publication number: 20110141090Abstract: Disclosed herein is a local dimming driving method and device of an LCD device, which is capable of compensating for a luminance deviation between blocks.Type: ApplicationFiled: September 16, 2010Publication date: June 16, 2011Inventors: Hee-Jung Hong, Eui-Yeol Oh, Si-Hoon Lee, Hee-Won Ahn
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Publication number: 20110141077Abstract: A driving method for local dimming of a Liquid Crystal Display (LCD) device and an apparatus using the same are disclosed.Type: ApplicationFiled: June 30, 2010Publication date: June 16, 2011Inventors: Dae-Ho CHO, Kyung-Joon Kwon, Hee-Won Ahn, Chang-Kyun Park
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Publication number: 20110141154Abstract: Disclosed herein is a local dimming driving method and device of an LCD device, which is capable of minimizing luminance deviation at the same gray scale due to a dimming difference between blocks. The local dimming driving method of the LCD device includes analyzing input image data in units of blocks and determining a local dimming value per block, performing spatial filtering with respect to the local dimming value per block, repeating spatial filtering by a predetermined repeat count, and controlling luminance of a backlight unit on a block-by-block basis using the local dimming value per block controlled by spatial filtering.Type: ApplicationFiled: August 10, 2010Publication date: June 16, 2011Inventors: Hee-Won Ahn, Hee-Jung Hong, Kyung-Joon Kwon, Dong-Woo Kim
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Publication number: 20110141166Abstract: Disclosed herein is a local dimming driving method and device of a Liquid Crystal Display (LCD) device, which is capable of preventing color change due to gray scale saturation when data is compensated while enabling local dimming. The local dimming driving method of the LCD device includes detecting maximum values per pixel from input image data, analyzing the maximum values per pixel on a block-by-block basis, and determining local dimming values per block according to the analysis result, calculating a first gain value using the local dimming values per block, calculating a maximum gain value per pixel using the maximum value per pixel as a second gain value, selecting a smaller value of the first and second gain values as a final gain value, compensating the input image data using the final gain value, and controlling luminance of a backlight unit on the block-by-block basis using the local dimming value per block.Type: ApplicationFiled: December 8, 2010Publication date: June 16, 2011Inventors: Hee Won Ahn, Si-Hoon Lee, Kyung-Joon Kwon, Kyo-Hyuck Choo
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Publication number: 20100156924Abstract: A liquid crystal display device capable of improving reliability of a backlight unit is disclosed. The liquid crystal display device includes: a backlight dimming modulating unit configured to modulate an internal algorithm backlight dimming control signal using an external input algorithm backlight dimming control signal and to maintain a dimming duty equal to or wider than an allowable dimming range of a backlight unit; an arithmetic unit configured to multiply the external input algorithm backlight dimming control signal by the modulated internal algorithm backlight dimming control signal and to output a final backlight dimming control signal; and a data modulating unit configured to modulate image data using the external input algorithm backlight dimming control signal corresponding to the modulated final backlight dimming control signal.Type: ApplicationFiled: November 11, 2009Publication date: June 24, 2010Inventors: Hee Jung Hong, Kyung Joon Kwon, Hee Won Ahn, Dae Ho Cho
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Publication number: 20090109170Abstract: A method of driving a liquid crystal display device includes inputting source image data, each of which has one of m gray level values, wherein m is a natural number, defining T error data from the source image data, wherein the error data have top k gray level values, and T and k are a natural number, generating conversion image data having larger gray level values than the source image data using one having a largest gray level value from the source image data excluding the error data, inputting the conversion image data to a liquid crystal panel, controlling a brightness of a backlight unit in accordance with the conversion image data, forming a bitmap corresponding to the conversion image data, wherein the bitmap shows positional distribution of pixels with the error data, counting error areas by scanning the bitmap, wherein each of the error areas includes the predetermined number of the pixels having the error data, and controlling the T according to the number of the error.Type: ApplicationFiled: October 22, 2008Publication date: April 30, 2009Applicant: LG.DISPLAY CO., LTD.Inventors: Kyung-Joon Kwon, Hee-Won Ahn, Sung-Soo Kim