Patents by Inventor Hyeon Jin Seo
Hyeon Jin Seo 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: 8879029Abstract: A method of fabricating a color filter substrate for a liquid crystal display device includes steps of forming a black matrix having a first thickness on a substrate, which includes first, second and third pixel regions, the black matrix surrounding each of the first, second and third pixel regions, forming red, green and blue color filter patterns using an inkjet apparatus, the red, green and blue color filter patterns disposed in the first, second and third pixel regions, respectively and having a second thickness, and forming an overcoat layer on a substantially entire surface of the substrate including the black matrix and the red, green and blue color filter patterns, the overcoat layer having a third thickness, wherein a difference between the first and second thicknesses is less than 15% of the third thickness such that the overcoat layer has an even top surface.Type: GrantFiled: December 10, 2009Date of Patent: November 4, 2014Assignee: LG Display Co., Ltd.Inventors: Jae-Min Lee, Hyeon-Jin Seo, Ki-Soub Yang
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Patent number: 8730436Abstract: Disclosed herein are a liquid crystal display (LCD) device and a method for manufacturing the same, capable of preventing problems (i.e., movement of balls, damage to the surfaces that face spacers upon application of predetermined pressure, and variation in cell gap) associated with the use of the ball spacers. The liquid crystal display device includes a first substrate and a second substrate facing each other, a spacer formed on the first substrate, wherein the spacer includes a plurality of balls and a solid to aggregate the balls together and adhere the balls to the first substrate, a hard coating layer formed on the second substrate facing the spacer, and a liquid crystal layer filled between the first substrate and the second substrate.Type: GrantFiled: April 25, 2012Date of Patent: May 20, 2014Assignee: LG Display Co., Ltd.Inventors: Jun Beom Cho, Hyeon Jin Seo, Jeong Hoon Lee, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 8648984Abstract: A color filter substrate for a liquid crystal display device and a method of fabricating the same includes black matrixes on a transparent insulating substrate, the black matrixes defining pixel areas and having a first region and a second region, color filters in the pixel areas and having areas overlapping the first region of the black matrixes, and ball spacers above the second region of the black matrixes, wherein a thickness of the first region is greater than a thickness of the second region.Type: GrantFiled: December 29, 2006Date of Patent: February 11, 2014Assignee: LG Display Co., Ltd.Inventors: Bong Chul Kim, Jun Beom Cho, Seung Hyung Lee, Kyo Yong Koo, Hyeon Jin Seo, Dhang Kwon, Robert Taff
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Patent number: 8325312Abstract: A liquid crystal display (LCD) device maintains a cell gap and prevents press defects via the use of ball spacers. The liquid crystal display device includes first and second substrates facing each other, a plurality of first spacers, a plurality of second spacers, and a liquid crystal layer filled between the first and second substrates. The first spacers are formed between the first and second substrates at portions of a black matrix layer of the second substrate. The first spacers include a plurality of first balls with a first diameter and a first solid to aggregate the first balls. The second spacers are formed at portions of the black matrix layer between the first and second substrates. The second spacers include a plurality of second balls with a second diameter 0.2 to 0.6 ?m smaller than the first diameter and a second solid to aggregate the second balls.Type: GrantFiled: August 26, 2008Date of Patent: December 4, 2012Assignee: LG Display Co., Ltd.Inventors: Hyeon Jin Seo, Jeong Hoon Lee, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 8305544Abstract: A liquid crystal display (LCD) device and a method for manufacturing the same are discussed. According to an embodiment, the liquid crystal display device includes a first substrate and a second substrate facing each other, wherein each of the first and second substrates includes pixel regions to form a matrix, a black matrix layer arranged in a region other than the pixel regions gate lines and data lines arranged in a portion corresponding to the black matrix layer spacers arranged in predetermined portions provided on the black matrix layer wherein each of the plurality of spacers includes one or more balls, and a solid to adhere the one or more balls to the first or second substrate, and a liquid crystal layer filled between the first substrate and the second substrate.Type: GrantFiled: September 15, 2011Date of Patent: November 6, 2012Assignee: LG Display Co., Ltd.Inventors: Bong Chul Kim, Hyeon Jin Seo, Jeong Hoon Lee, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Publication number: 20120206686Abstract: Disclosed herein are a liquid crystal display (LCD) device and a method for manufacturing the same, capable of preventing problems (i.e., movement of balls, damage to the surfaces that face spacers upon application of predetermined pressure, and variation in cell gap) associated with the use of the ball spacers. The liquid crystal display device includes a first substrate and a second substrate facing each other, a spacer formed on the first substrate, wherein the spacer includes a plurality of balls and a solid to aggregate the balls together and adhere the balls to the first substrate, a hard coating layer formed on the second substrate facing the spacer, and a liquid crystal layer filled between the first substrate and the second substrate.Type: ApplicationFiled: April 25, 2012Publication date: August 16, 2012Inventors: Jun Beom Cho, Hyeon Jin Seo, Jeong Hoon Lee, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 8184257Abstract: Disclosed herein are a liquid crystal display (LCD) device and a method for manufacturing the same, capable of preventing problems (i.e., movement of balls, damage to the surfaces that face spacers upon application of predetermined pressure, and variation in cell gap) associated with the use of the ball spacers. The liquid crystal display device includes a first substrate and a second substrate facing each other, a spacer formed on the first substrate, wherein the spacer includes a plurality of balls and a solid to aggregate the balls together and adhere the balls to the first substrate, a hard coating layer formed on the second substrate facing the spacer, and a liquid crystal layer filled between the first substrate and the second substrate.Type: GrantFiled: September 12, 2008Date of Patent: May 22, 2012Assignee: LG Display Co., Ltd.Inventors: Jun Beom Cho, Hyeon Jin Seo, Jeong Hoon Lee, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 8174665Abstract: Disclosed is a liquid crystal display (LCD) device and a method for manufacturing the same, capable of maintaining a cell gap and preventing press defects caused by application of a predetermined external pressure via the use of ball spacers.Type: GrantFiled: March 28, 2011Date of Patent: May 8, 2012Assignee: LG Display Co., Ltd.Inventors: Bong Chul Kim, Hyeon Jin Seo, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Publication number: 20120008084Abstract: A liquid crystal display (LCD) device and a method for manufacturing the same are discussed. According to an embodiment, the liquid crystal display device includes a first substrate and a second substrate facing each other, wherein each of the first and second substrates includes pixel regions to form a matrix, a black matrix layer arranged in a region other than the pixel regions gate lines and data lines arranged in a portion corresponding to the black matrix layer spacers arranged in predetermined portions provided on the black matrix layer wherein each of the plurality of spacers includes one or more balls, and a solid to adhere the one or more balls to the first or second substrate, and a liquid crystal layer filled between the first substrate and the second substrate.Type: ApplicationFiled: September 15, 2011Publication date: January 12, 2012Inventors: Bong Chul KIM, Hyeon Jin Seo, Jeong Hoon Lee, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 8040485Abstract: A liquid crystal display (LCD) device and a method for manufacturing the same are discussed. According to an embodiment, the liquid crystal display device includes a first substrate and a second substrate facing each other, wherein each of the first and second substrates includes pixel regions to form a matrix, a black matrix layer arranged in a region other than the pixel regions gate lines and data lines arranged in a portion corresponding to the black matrix layer spacers arranged in predetermined portions provided on the black matrix layer wherein each spacer includes one or more balls, and a solid to adhere the balls to the first or second substrate, and a liquid crystal layer filled between the first substrate and the second substrate.Type: GrantFiled: September 18, 2008Date of Patent: October 18, 2011Assignee: LG Display Co., Ltd.Inventors: Bong Chul Kim, Hyeon Jin Seo, Jeong Hoon Lee, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 8026665Abstract: Disclosed are a novel deuterated aryl amine compound capable of enhancing thermal stability, hole transporting capability, luminescence efficiency, etc. of an organic light emitting diode at the time of being used as a hole-injecting layer, a preparation method thereof, and an organic light emitting diode using the same.Type: GrantFiled: November 18, 2005Date of Patent: September 27, 2011Assignee: Doosan CorporationInventors: Kyoung-soo Kim, Tae-hyung Kim, Kyu-man Youn, Hyeon-jin Seo, Myung-soo Ko, Sang-hoon Lee, Dong-wan Ryu, Yeong-eun Kim
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Patent number: 7982831Abstract: A liquid crystal display (LCD) device and its fabrication method are disclosed. Specifically, a fabrication method in which polyhedral spacers are implemented on a substrate through an ink jet method are used for an LCD device. The spacers have the polyhedral shape to increase their contact area with two substrates, and include a surface processed layer for strengthening a bonding force in its bonding with an alignment film formed on the two substrates. The spacers have a polyhedral shape for maintaining the cell gap between the substrates.Type: GrantFiled: November 20, 2009Date of Patent: July 19, 2011Assignee: LG Display Co., Ltd.Inventors: Jeong-Hyun Kim, Myoung Ho Lee, Min Joo Kim, Se Jong Shin, Bong Chul Kim, Seung Hyun Lee, Kyo Yong Koo, Hyeon Jin Seo
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Patent number: 7980196Abstract: An apparatus for coating a polyimide layer includes a printing table in which a substrate is provided, an inkjet head having an injection surface with nozzles for injecting a polyimide liquid onto the substrate, a polyimide liquid supply tank filled with the polyimide liquid, an ultrasonic cleaner in which a cleaning liquid for cleaning the inkjet head is stored for cleaning the inkjet head with vibrations in the cleaning liquid generated by applying an ultrasonic signal, and a wiper for wiping an injection surface of the inkjet head.Type: GrantFiled: December 29, 2006Date of Patent: July 19, 2011Assignees: LG Display Co., Ltd., ULVAC, Inc.Inventors: Bong Chul Kim, Jun Beom Cho, Seung Hyung Lee, Kyo Yong Koo, Hyeon Jin Seo, Dhang Kwon, Robert Taff
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Publication number: 20110171766Abstract: Disclosed is a liquid crystal display (LCD) device and a method for manufacturing the same, capable of maintaining a cell gap and preventing press defects caused by application of a predetermined external pressure via the use of ball spacers.Type: ApplicationFiled: March 28, 2011Publication date: July 14, 2011Inventors: Bong Chul KIM, Hyeon Jin Seo, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 7936438Abstract: A liquid crystal display device includes a first substrate and a second substrate facing each other, a gate line and a common line arranged adjacent and parallel to each other on the first substrate, a data line crossing the gate line, a spacer comprising a plurality of balls, formed on the first or second substrate in a lower-height and flat region provided between the gate line and the common line, and a liquid crystal layer filled between the first substrate and the second substrate.Type: GrantFiled: September 29, 2008Date of Patent: May 3, 2011Assignee: LG Display Co., Ltd.Inventors: Hyeon Jin Seo, Jeong Hoon Lee, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 7936434Abstract: Disclosed is a liquid crystal display (LCD) device and a method for manufacturing the same, capable of maintaining a cell gap and preventing press defects caused by application of a predetermined external pressure via the use of ball spacers.Type: GrantFiled: September 24, 2008Date of Patent: May 3, 2011Assignee: LG Display Co., Ltd.Inventors: Bong Chul Kim, Hyeon Jin Seo, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Patent number: 7883751Abstract: Disclosed herein are a liquid crystal display (LCD) device and a method for manufacturing the same, wherein ball spacers are fixedly used to reduce touch and press defects and the content of a solid mixed with balls is increased to partially widen an area of the upper surface of the spacer to thereby prevent damage of the substrate that faces the spacer or of the structure provided on the same.Type: GrantFiled: September 25, 2008Date of Patent: February 8, 2011Assignee: LG Display Co., Ltd.Inventors: Hyeon Jin Seo, Dhang Kwon, Hang Sup Cho, Ho Su Kim
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Publication number: 20110019134Abstract: A method of fabricating a color filter substrate for a liquid crystal display device includes steps of forming a black matrix having a first thickness on a substrate, which includes first, second and third pixel regions, the black matrix surrounding each of the first, second and third pixel regions, forming red, green and blue color filter patterns using an inkjet apparatus, the red, green and blue color filter patterns disposed in the first, second and third pixel regions, respectively and having a second thickness, and forming an overcoat layer on a substantially entire surface of the substrate including the black matrix and the red, green and blue color filter patterns, the overcoat layer having a third thickness, wherein a difference between the first and second thicknesses is less than 15% of the third thickness such that the overcoat layer has an even top surface.Type: ApplicationFiled: December 10, 2009Publication date: January 27, 2011Inventors: Jae-Min LEE, Hyeon-Jin SEO, Ki-Soub YANG
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Publication number: 20100068965Abstract: A liquid crystal display (LCD) device and its fabrication method are disclosed. Specifically, a fabrication method in which polyhedral spacers are implemented on a substrate through an ink jet method are used for an LCD device. The spacers have the polyhedral shape to increase their contact area with two substrates, and include a surface processed layer for strengthening a bonding force in its bonding with an alignment film formed on the two substrates. The spacers have a polyhedral shape for maintaining the cell gap between the substrates.Type: ApplicationFiled: November 20, 2009Publication date: March 18, 2010Applicant: LG Display Co., Ltd.Inventors: Jeong-Hyun Kim, Myoung Ho Lee, Min Joo Kim, Se Jong Shin, Bong Chul Kim, Seung Hyun Lee, Kyo Yong Koo, Hyeon Jin Seo
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Patent number: 7643111Abstract: A liquid crystal display (LCD) device and its fabrication method are disclosed. Specifically, a fabrication method in which polyhedral spacers are implemented on a substrate through an ink jet method are used for an LCD device. The spacers have the polyhedral shape to increase their contact area with two substrates, and include a surface processed layer for strengthening a bonding force in its bonding with an alignment film formed on the two substrates. The spacers have a polyhedral shape for maintaining the cell gap between the substrates.Type: GrantFiled: May 17, 2006Date of Patent: January 5, 2010Assignee: LG. Display Co., Ltd.Inventors: Jeong Hyun Kim, Myoung Ho Lee, Min Joo Kim, Se Jong Shin, Bong Chul Kim, Seung Hyun Lee, Kyo Yong Koo, Hyeon Jin Seo