Patents by Inventor Kyung Su Chae
Kyung Su Chae 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: 8074551Abstract: A cutting assembly for cutting a substrate has two circular cutting wheels. The cutting wheels are bonded together as a unitary unit. Each cutting wheel has cutting protrusions on its circumference. The cutting assembly creates two lines of intermittent cuts on the substrate.Type: GrantFiled: June 28, 2002Date of Patent: December 13, 2011Assignee: LG Display Co., Ltd.Inventor: Kyung-Su Chae
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Patent number: 7836934Abstract: A substrate bonding apparatus for use in fabricating LCD devices substantially prevents substrates held to upper stages from sagging. The substrate bonding apparatus may, for example, include upper and lower stages having a plurality of passages for holding respective substrates; suction force applying means having one end mounted within each passage for transmitting a suction force to operably proximate portions of a substrate, wherein the one end of the suction force applying means is projectable from within each passage to a predetermined distance from the stage; and a vacuum pump for providing a suction force to the suction force applying means.Type: GrantFiled: November 20, 2007Date of Patent: November 23, 2010Assignee: LG Display Co., Ltd.Inventors: Young Sang Byun, Kyung Su Chae
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Patent number: 7807214Abstract: An apparatus for dispensing a liquid crystal display panel includes a table for holding a substrate, the substrate having a plurality of picture display regions; and at least one dispenser installed at a side of the table, the dispenser having at least one dispensing material to be supplied to the substrate. A dispensing method for a liquid crystal display panel in accordance with the present invention includes providing at least one substrate on a table, wherein a plurality of unit panels are to be formed from the at least one substrate; supplying a dispensing material to a plurality of dispensers; and supplying at least one dispensing material to the plurality of unit panels on at least one substrate through nozzles.Type: GrantFiled: April 16, 2004Date of Patent: October 5, 2010Assignee: LG Display Co., Ltd.Inventors: Kyung Su Chae, Sang Ho Park, Se Joon Baek
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Patent number: 7746442Abstract: A liquid crystal display device including opposite first and second substrates, and column spacers between the first and second substrates, the column spacers formed such that the column spacers differ in size as positions of the column spacers differ, thereby accommodating the variation in gap between substrates when liquid crystal is concentrated at a lower end of the display due to gravity when a large LCD panel is in a vertical position.Type: GrantFiled: March 14, 2006Date of Patent: June 29, 2010Assignee: LG Display Co., Ltd.Inventors: Yong Sang Byun, Kyung Su Chae
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Patent number: 7710534Abstract: Disclosed is a system for fabricating a liquid crystal display using liquid crystal dropping and a method of fabricating a liquid crystal display using the same. The present invention includes a liquid crystal forming line dropping liquid crystals on the first substrate, a sealant forming line forming the sealant on the second substrate, and a bonding and hardening line bonding the two substrates to each other and hardening the sealant, printing a sealant, bonding the substrates each other, and hardening the sealant and an inspection process line of cutting the bonded substrates into panel units and grinding and inspecting the unit panels.Type: GrantFiled: May 31, 2007Date of Patent: May 4, 2010Assignee: LG Display Co., Ltd.Inventors: Yong Sang Byun, Moo Yeol Park, Sung Su Jung, Sung Chun Kang, Jong Woo Kim, Young Hun Ha, Sang Seok Lee, Sang Ho Park, Hun Jun Choo, Hyug Jin Kweon, Kyung Su Chae, Hae Joon Son, Sang Sun Shin, Jong Go Lim, Wan Soo Kim, Young Hun Jeung, Joung Ho Ryu, Ji Heum Uh, Im Su Lee
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Patent number: 7616289Abstract: An apparatus for conveying a liquid crystal display panel for moving various size unit liquid crystal display panels. The present invention includes a horizontal driving unit controlling a revolution of a motor, a plurality of screw shafts protruding out of the horizontal driving unit. A pair of robot arms having first and second ends, the first ends are supported by corresponding screw shafts and extend from the screw shafts, and a plurality of clamping units connected to the second ends of the robot arms.Type: GrantFiled: February 7, 2006Date of Patent: November 10, 2009Assignee: LG Display Co., Ltd.Inventors: Kyung-Su Chae, Jong-Go Lim
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Patent number: 7497762Abstract: In an apparatus and a method for correcting a grinding amount of a unit liquid crystal display panel, by grinding an edge of a unit liquid crystal display panel; generating grinding pictures of the unit liquid crystal display panel; calculating an error value by comparing the grinding pictures with a reference picture; and changing a set value of a grinding unit according to the error value. In addition, by disposing a grinding amount correcting apparatus in a grinding apparatus, correcting a grinding amount of a unit liquid crystal display panel can be performed by an automatic system.Type: GrantFiled: October 1, 2002Date of Patent: March 3, 2009Assignee: LG Display Co., Ltd.Inventors: Kyung-Su Chae, Sang-Sun Shin, Jong-Go Lim
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Patent number: 7436483Abstract: Disclosed is a system for fabricating a liquid crystal display using liquid crystal dropping and a method of fabricating a liquid crystal display using the same. The present invention includes a liquid crystal forming line dropping liquid crystals on the first substrate, a sealant forming line forming the sealant on the second substrate, and a bonding and hardening line bonding the two substrates to each other and hardening the sealant, printing a sealant, bonding the substrates each other, and hardening the sealant and an inspection process line of cutting the bonded substrates into panel units and grinding and inspecting the unit panels.Type: GrantFiled: April 1, 2005Date of Patent: October 14, 2008Assignee: LG Display Co., Ltd.Inventors: Yong Sang Byun, Moo Yeol Park, Sung Su Jung, Sung Chun Kang, Jong Woo Kim, Young Hun Ha, Sang Seok Lee, Sang Ho Park, Hun Jun Choo, Hyug Jin Kweon, Kyung Su Chae, Hae Joon Son, Sang Sun Shin, Jong Go Lim
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Patent number: 7414696Abstract: A fabrication system for a liquid crystal display device includes an alignment layer line for forming an alignment layer on a first substrate and a second substrate, the first substrate and the second substrate being separately supplied thereto, a spacer scattering line for scattering spacers on one of the first substrate and the second substrate, a sealant coating line for coating a sealant material on one of the first substrate and the second substrate, an assembling line for bonding the first and second substrates together, a cutting line for separating the bonded first and second substrates into a plurality of liquid crystal display cells, and a liquid crystal layer line for injecting liquid crystal material into each of the liquid crystal display cells, wherein the alignment layer line, the spacer scattering line, the sealant coating line, the assembling line, the cutting line, and the liquid crystal line are positioned along a single fabrication line.Type: GrantFiled: June 27, 2003Date of Patent: August 19, 2008Assignee: LG Display Co., Ltd.Inventors: Young-Sang Byun, Kyung-Su Chae
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Publication number: 20080170197Abstract: Disclosed is a system for fabricating a liquid crystal display using liquid crystal dropping and a method of fabricating a liquid crystal display using the same. The present invention includes a liquid crystal forming line dropping liquid crystals on the first substrate, a sealant forming line forming the sealant on the second substrate, and a bonding and hardening line bonding the two substrates to each other and hardening the sealant, printing a sealant, bonding the substrates each other, and hardening the sealant and an inspection process line of cutting the bonded substrates into panel units and grinding and inspecting the unit panels.Type: ApplicationFiled: May 31, 2007Publication date: July 17, 2008Applicant: LG.PHILIPS LCD CO., LTD.Inventors: Yong Sang Byun, Moo Yeol Park, Sung Su Jung, Sung Chun Kang, Jong Woo Kim, Young Hun Ha, Sang Seok Lee, Sang Ho Park, Hun Jun Choo, Hyug Jin Kweon, Kyung Su Chae, Hae Joon Son, Sang Sun Shin, Jong Go Lim, Wan Soo Kim, Young Hun Jeung, Joung Ho Ryu, Ji Heum Uh, Im Su Lee
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Patent number: 7365824Abstract: A system for fabricating a liquid crystal display using liquid crystal dropping and a method of fabricating a liquid crystal display using the same includes a liquid crystal forming line dropping liquid crystals on the first substrate, a sealant forming line forming the sealant on the second substrate, and a bonding and hardening line bonding the two substrates to each other and hardening the sealant, printing a sealant, bonding the substrates each other, and hardening the sealant and an inspection process line of cutting the bonded substrates into panel units and grinding and inspecting the unit panels. The present invention includes the processes of dropping LC on a first substrate using a dispenser, forming a main UV hardening sealant on a second substrate, bonding the first and second substrates to each other in a vacuum state, UV hardening the main UV hardening sealant, cutting the bonded substrates into cell units, grinding the cut substrates, and finally inspecting the grinded substrates.Type: GrantFiled: December 3, 2004Date of Patent: April 29, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Yong Sang Byun, Moo Yeol Park, Sung Su Jung, Sung Chun Kang, Jong Woo Kim, Young Hun Ha, Sang Seok Lee, Sang Ho Park, Hun Jun Choo, Hyug Jin Kweon, Kyung Su Chae, Hae Joon Son, Sang Sun Shin, Jong Go Lim, Wan Soo Kim, Young Hun Jeung, Joung Ho Ryu, Ji Heum Uh, Im Su Lee
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Patent number: 7362405Abstract: A method of fabricating a liquid crystal display device includes providing a first substrate, forming an alignment layer on the first substrate using an ink jet method to form a plurality of holes that expose portions of the first substrate, and forming a spacer within each of the plurality of holes using the ink jet method.Type: GrantFiled: April 21, 2006Date of Patent: April 22, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Kyung-Su Chae, Hyun-Ho Song
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Patent number: 7363107Abstract: A substrate transfer system is used in fabricating a liquid crystal display (LCD) device. The system includes a cassette having a bar code, a cassette stocker to store the cassette; an auto guided vehicle that is able to transfer the cassette; a moving path unit to determine a moving path of the auto guided vehicle, a plurality of process stages at which processes are conducted on a substrate during fabrication of the LCD device, and a host to control the cassette stocker, the auto guided vehicle and the process stages. At least one of the auto guided vehicle and the cassette stocker having a bar code reader.Type: GrantFiled: September 29, 2006Date of Patent: April 22, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Kyung-Su Chae, Hyun-Ho Song
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Patent number: 7349060Abstract: Loader and bonding apparatus for fabricating a liquid crystal display device, and a loading method thereof are disclosed, the method for loading a substrate by using a loader having an arm with a plurality of robot fingers, and a plurality of adsorption pads on each of the robot fingers at regular intervals for adsorbing a substrate, and a bonding apparatus having a plurality of adsorption pins mounted on the upper stage movable in up/down direction for adsorption of the substrate being loaded, including the steps of the loader adsorbing, and holding the substrate at a back side thereof, and inverting the substrate, by using the adsorption pads, positioning the inverted substrate under the upper stage of the bonding apparatus, moving down the adsorption pins on the upper stage, and adsorbing the substrate at the back side thereof through the adsorption pins, removing adsorption force of the adsorption pads, and the loader being moved out of the bonding apparatus, and moving up the adsorption pins, and securinType: GrantFiled: October 18, 2004Date of Patent: March 25, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Young Sang Byun, Kyung Su Chae, Sang Ho Park, Se Joon Baek
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Patent number: 7324184Abstract: An indicator for deciding a grinding amount of a liquid crystal display panel and a method for detecting grinding failure using the same are disclosed in the present invention. The indicator includes at least one alignment mark formed at a gate pad unit and a data pad unit of a liquid crystal display panel, and at least one pattern for detecting a grinding amount between a first end portion of the gate pad unit and the alignment mark, and a second end portion of the data pad unit and the alignment mark.Type: GrantFiled: November 8, 2004Date of Patent: January 29, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Kyung-Su Chae, Hun-Jun Choo, Jong Go Lim
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Patent number: 7319503Abstract: A method for cutting a liquid crystal display panel is disclosed in the present invention. The method includes forming a plurality of unit liquid crystal display panels on first and second mother substrates, wherein the unit liquid crystal display panels have at least two different sizes, forming a plurality of first scribing lines on a surface of the first mother substrate, rotating the first and second mother substrates by 90°, and forming a plurality of second scribing lines on the surface of the first mother substrate.Type: GrantFiled: September 27, 2002Date of Patent: January 15, 2008Assignee: LG.Philips LCD Co., Ltd.Inventor: Kyung-Su Chae
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Patent number: 7314535Abstract: A substrate bonding apparatus for use in fabricating LCD devices substantially prevents substrates held to upper stages from sagging. The substrate bonding apparatus may, for example, include upper and lower stages having a plurality of passages for holding respective substrates; suction force applying means having one end mounted within each passage for transmitting a suction force to operably proximate portions of a substrate, wherein the one end of the suction force applying means is projectable from within each passage to a predetermined distance from the stage; and a vacuum pump for providing a suction force to the suction force applying means.Type: GrantFiled: November 5, 2003Date of Patent: January 1, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Young Sang Byun, Kyung Su Chae
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Patent number: 7300084Abstract: An apparatus for convening a liquid crystal display panel for moving various size unit liquid crystal display panels. The present invention includes a horizontal driving unit controlling a revolution of a motor, a plurality of screw shafts protruding out of the horizontal driving unit. A pair of robot arms having first and second ends, the first ends are supported by corresponding screw shafts and extend from the screw shafts, and a plurality of clamping units connected to the second ends of the robot arms.Type: GrantFiled: December 30, 2002Date of Patent: November 27, 2007Assignee: L.G.Philips LCD Co., Ltd.Inventors: Kyung-Su Chae, Jong-Go Lim
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Patent number: 7295279Abstract: Disclosed is a system for fabricating a liquid crystal display (LCD) using liquid crystal dropping (LC) and a method of fabricating an LCD using the same. The invention includes an LC forming line dropping LC on a first substrate, a sealant forming line forming sealant on a second substrate, a bonding and hardening line printing a sealant, bonding the substrates each other, and hardening the sealant, and an inspection process line cutting the bonded substrates into panel units and grinding and inspecting the unit panels. The present invention drops LC on a first substrate using a dispenser, forms a main UV hardening sealant on a second substrate, bonds the first and second substrates to each other in a vacuum state, UV-hardens the main UV hardening sealant, cuts the bonded substrates into cell units, grinds the cut substrates, and inspects the grinded substrates.Type: GrantFiled: June 28, 2002Date of Patent: November 13, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Yong Sang Byun, Moo Yeol Park, Sung Su Jung, Sung Chun Kang, Jong Woo Kim, Young Hun Ha, Sang Seok Lee, Sang Ho Park, Hun Jun Choo, Hyug Jin Kweon, Kyung Su Chae, Hae Joon Son, Sang Sun Shin, Jong Go Lim
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Patent number: 7225917Abstract: A conveyor system is disclosed, having a width adjustment unit capable of adjusting a width according to the size of goods to transfer semiprocessed goods in the process line, which includes a transfer unit for transferring goods; conveyor plates provided at both sides of the transfer unit, and guiding the goods by supporting both sides of the goods; and the width adjustment unit including a wire connected with the conveyor plates, a driving pulley operating the wire, and a driven connected with the wire.Type: GrantFiled: September 28, 2004Date of Patent: June 5, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Ji Heum Uh, Kyung Su Chae, Jeong Joon Lee, Hyun Ho Song, Hong Seok Lee