Patents by Inventor Ki-Du Cho
Ki-Du Cho 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: 8354142Abstract: A method for coating a polyimide layer includes, placing a substrate on a print table; jetting polyimide liquid onto the substrate from a jetting surface provided over the print table; and wiping the jetting surface by moving a wiper from one side of the jetting surface to another side of the jetting surface while the wiper contacts the jetting surface, wherein the wiper is made of one of a perfluoro-based polymer.Type: GrantFiled: January 21, 2010Date of Patent: January 15, 2013Assignee: LG Display Co., Ltd.Inventors: Ki Du Cho, Bong Chul Kim, Hui Jae Lee, Sun Ja Kim, Hwang Un Seo, Hang Sup Cho, Eun Mi Kim
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Patent number: 7995164Abstract: An array substrate for a liquid crystal display (LCD) device includes a substrate having a display region and a non-display region at periphery portions of the display region, the non-display region including first, second, third and fourth regions; a plurality of gate lines parallel to the second and fourth regions, the plurality of gate lines including a first gate line closest to the second region and a second gate line closest to the fourth region; a plurality of data lines parallel to the first and third regions and crossing the plurality of gate lines to define a plurality of pixel regions in the display region, the plurality of data lines including a first data line closest to the first region; and a light-shielding portion corresponding to the non-display region and disposed at the same layer as at least one of the gate line and the data line, the light-shielding portion including first, second, third and fourth portions corresponding to the first, second, third and fourth regions, respectively.Type: GrantFiled: April 20, 2005Date of Patent: August 9, 2011Assignee: LG Display Co., Ltd.Inventors: Jong-Jin Park, Won-Gyun Youn, Kwang-Sik Oh, Myung-Woo Nam, Ki-Du Cho, Se-Jong Shin, Bong-Chul Kim, Kwon-Seob Choi
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Patent number: 7812921Abstract: A color filter-on-thin film transistor substrate includes gate data lines crossing each other and defining pixel areas, thin film transistors is located at crossings of gate and data lines, pixel electrodes connected to the thin film transistors and formed within the pixel areas, and stripe-shaped color filters overlapping a plurality of pixel areas and oriented parallel to one of the gate and data lines.Type: GrantFiled: June 17, 2009Date of Patent: October 12, 2010Assignee: LG Display Co., Ltd.Inventors: Deok Won Lee, Kwang Sik Oh, Myung Woo Nam, Ki Du Cho, Se Jong Shin, Bong Chul Kim, Kwon Seob Choi
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Publication number: 20100119723Abstract: An apparatus for coating a polyimide layer includes a print table for receiving a substrate thereon, an inkjet head positioned over the print table and having a jetting surface with a plurality of nozzles for jetting polyimide liquid onto the substrate, and a polyimide liquid supply tank for supplying polyimide liquid, and a wiper movable from one side of the jetting surface to an other side of the jetting surface while the wiper contacts the jetting surface of the inkjet head.Type: ApplicationFiled: January 21, 2010Publication date: May 13, 2010Applicant: LG DISPLAY CO., LTD.Inventors: Ki Du CHO, Bong Chul KIM, Hui Jae LEE, Sun Ja KIM, Hwang Un SEO, Hang Sup CHO, Eun Mi KIM
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Patent number: 7673580Abstract: An apparatus for coating a polyimide layer includes a print table for receiving a substrate thereon, an inkjet head positioned over the print table and having a jetting surface with a plurality of nozzles for jetting polyimide liquid onto the substrate, and a polyimide liquid supply tank for supplying polyimide liquid, and a wiper movable from one side of the jetting surface to an other side of the jetting surface while the wiper contacts the jetting surface of the inkjet head.Type: GrantFiled: December 29, 2006Date of Patent: March 9, 2010Assignee: LG Display Co., Ltd.Inventors: Ki Du Cho, Bong Chul Kim, Hui Jae Lee, Sun Ja Kim, Hwang Un Seo, Hang Sup Cho, Eun Mi Kim
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Publication number: 20090263921Abstract: A color filter-on-thin film transistor substrate includes gate data lines crossing each other and defining pixel areas, thin film transistors is located at crossings of gate and data lines, pixel electrodes connected to the thin film transistors and formed within the pixel areas, and stripe-shaped color filters overlapping a plurality of pixel areas and oriented parallel to one of the gate and data lines.Type: ApplicationFiled: June 17, 2009Publication date: October 22, 2009Inventors: Deok Won LEE, Kwang Sik OH, Myung Woo NAM, Ki Du CHO, Se Jong SHIN, Bong Chul KIM, Kwon Seob CHOI
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Patent number: 7561229Abstract: A color filter-on-thin film transistor substrate includes gate data lines crossing each other and defining pixel areas, thin film transistors is located at crossings of gate and data lines, pixel electrodes connected to the thin film transistors and formed within the pixel areas, and stripe-shaped color filters overlapping a plurality of pixel areas and oriented parallel to one of the gate and data lines.Type: GrantFiled: May 24, 2005Date of Patent: July 14, 2009Assignee: LG Display Co., Ltd.Inventors: Deok Won Lee, Kwang Sik Oh, Myung Woo Nam, Ki Du Cho, Se Jong Shin, Bong Chul Kim, Kwon Seob Choi
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Patent number: 7511782Abstract: An LCD device and a method for manufacturing the same is disclosed in which the manufacturing process is simplified by etching an overcoat layer and a lower insulating layer at the same time. Disclosed is a method for manufacturing the LCD device that includes forming a thin film transistor (TFT) on an active region of a substrate, forming a gate pad region and data pad region, and forming a passivation layer on the entire surface of the substrate. The manufacturing method further includes forming an overcoat layer and selectively etching the overcoat layer. Contact holes for the pixel electrode, the gate pad, and the data pad are formed by selectively etching the overcoat layer, the passivation layer, and the gate insulating layer though one process.Type: GrantFiled: March 29, 2005Date of Patent: March 31, 2009Assignee: LG Display Co., Ltd.Inventors: Kwang Sik Oh, Myung Woo Nam, Ki Du Cho, Se Jong Shin, Bong Chul Kim, Kwon Seob Choi
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Patent number: 7477345Abstract: A method for manufacturing a liquid crystal display includes forming a plurality of gate lines and data lines on a substrate, the plurality of gate and data lines cross each other and defining a plurality of unit pixel regions displaying red, green, and blue colors, forming a plurality of thin film transistors in each unit pixel regions, forming a passivation layer on the substrate, forming a green color filter layer on the substrate within a unit pixel region displaying the green color, forming one of a red color filter layer and a blue color filter layer within a unit adjacent to the unit pixel region displaying the green color, and within a portion of the green color filter layer overlapping the thin film transistor, depositing an organic insulating layer on the substrate and forming a contact hole, and forming a plurality of pixel electrodes corresponding to each unit pixel region.Type: GrantFiled: March 28, 2005Date of Patent: January 13, 2009Assignee: LG Display Co., Ltd.Inventors: Woong-Kwon Kim, Kwang-Sik Oh, Myung-Woo Nam, Ki-Du Cho, Se-Jong Shin, Bong-Chul Kim, Kwon-Seob Choi
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Publication number: 20070275176Abstract: An apparatus for coating a polyimide layer includes a print table for receiving a substrate thereon, an inkjet head positioned over the print table and having a jetting surface with a plurality of nozzles for jetting polyimide liquid onto the substrate, and a polyimide liquid supply tank for supplying polyimide liquid, and a wiper movable from one side of the jetting surface to an other side of the jetting surface while the wiper contacts the jetting surface of the inkjet head.Type: ApplicationFiled: December 29, 2006Publication date: November 29, 2007Applicant: LG.PHILIPS LCD CO., LTD.Inventors: Ki Du Cho, Bong Chul Kim, Hui Jae Lee, Sun Ja Kim, Hwang Un Seo, Hang Sup Cho, Eun Mi Kim
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Publication number: 20070231497Abstract: An apparatus for coating polyimide layer includes a print table, an inkjet head, and a polyimide liquid supply tank, wherein the inkjet head is configured to jet the polyimide liquid in a scan-coating and be shifted by a predetermined shift pitch in a direction until 2N times of scan-coating occurs in which N?2 and N is a natural number. A method for coating polyimide layer includes placing a substrate, loading a polyimide liquid vessel into a polyimide liquid supply tank, jetting the polyimide liquid onto the substrate in a scan-coating, repeating the jetting the polyimide liquid onto the substrate in a scan-coating and the shifting the inkjet head by a predetermined shift pitch until 2N times of scan-coating occurs in which N?2 and N is a natural number.Type: ApplicationFiled: December 29, 2006Publication date: October 4, 2007Applicant: LG.PHILIPS LCD CO., LTD.Inventors: Ki Du Cho, Bong Chul Kim, Hui Jae Lee, Sung Ja Kim, Hwang Un Seo, Hang Sup Cho, Eun Mi Kim
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Publication number: 20050253984Abstract: A method for manufacturing a liquid crystal display includes forming a plurality of gate lines and data lines on a substrate, the plurality of gate and data lines cross each other and defining a plurality of unit pixel regions displaying red, green, and blue colors, forming a plurality of thin film transistors in each unit pixel regions, forming a passivation layer on the substrate, forming a green color filter layer on the substrate within a unit pixel region displaying the green color, forming one of a red color filter layer and a blue color filter layer within a unit adjacent to the unit pixel region displaying the green color, and within a portion of the green color filter layer overlapping the thin film transistor, depositing an organic insulating layer on the substrate and forming a contact hole, and forming a plurality of pixel electrodes corresponding to each unit pixel region.Type: ApplicationFiled: March 28, 2005Publication date: November 17, 2005Inventors: Woong-Kwon Kim, Kwang-Sik Oh, Myung-Woo Nam, Ki-Du Cho, Se-Jong Shin, Bong-Chul Kim, Kwon-Seob Choi
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Publication number: 20050243232Abstract: An array substrate for a liquid crystal display (LCD) device includes a substrate having a display region and a non-display region at periphery portions of the display region, the non-display region including first, second, third and fourth regions; a plurality of gate lines parallel to the second and fourth regions, the plurality of gate lines including a first gate line closest to the second region and a second gate line closest to the fourth region; a plurality of data lines parallel to the first and third regions and crossing the plurality of gate lines to define a plurality of pixel regions in the display region, the plurality of data lines including a first data line closest to the first region; and a light-shielding portion corresponding to the non-display region and disposed at the same layer as at least one of the gate line and the data line, the light-shielding portion including first, second, third and fourth portions corresponding to the first, second, third and fourth regions, respectively.Type: ApplicationFiled: April 20, 2005Publication date: November 3, 2005Inventors: Jong-Jin Park, Won-Gyun Youn, Kwang-Sik Oh, Myung-Woo Nam, Ki-Du Cho, Se-Jong Shin, Bong-Chul Kim, Kwon-Seob Choi