Patents by Inventor Ji-Heum Uh

Ji-Heum Uh 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).

  • Patent number: 8113401
    Abstract: An apparatus for cutting liquid crystal display panels is disclosed in the present invention. The apparatus includes at least one table receiving bonded mother substrates having a plurality of unit liquid crystal display panels, at least one cutting wheel forming a scribing line on a surface of the bonded mother substrates, and a suction unit coupled to the at least one cutting wheel and sucking in glass debris on the surface of the bonded mother substrates.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: February 14, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Hun-Jun Choo, Ji-Heum Uh, Sang-Sun Shin, Hwa-Seob Shim, Jong-Go Lim
  • Publication number: 20100258605
    Abstract: An apparatus for cutting liquid crystal display panels is disclosed in the present invention. The apparatus includes at least one table receiving bonded mother substrates having a plurality of unit liquid crystal display panels, at least one cutting wheel forming a scribing line on a surface of the bonded mother substrates, and a suction unit coupled to the at least one cutting wheel and sucking in glass debris on the surface of the bonded mother substrates.
    Type: Application
    Filed: June 24, 2010
    Publication date: October 14, 2010
    Inventors: Hun-Jun CHOO, Ji-Heum Uh, Sang-Sun Shin, Hwa-Seob Shim, Jong-Go Lim
  • Patent number: 7710534
    Abstract: 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: Grant
    Filed: May 31, 2007
    Date of Patent: May 4, 2010
    Assignee: 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
  • Publication number: 20080170197
    Abstract: 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: Application
    Filed: May 31, 2007
    Publication date: July 17, 2008
    Applicant: 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
  • Patent number: 7365824
    Abstract: 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: Grant
    Filed: December 3, 2004
    Date of Patent: April 29, 2008
    Assignee: 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
  • Patent number: 7365560
    Abstract: An apparatus and a method testing liquid crystal display panel which are able to test whether or not burr remains on longer sides and on shorter sides of a unit liquid crystal display panel using first to fourth testing bars in a touch method, and able to measure a distance between the longer sides and a distance between the shorter sides of the unit liquid crystal display panel.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: April 29, 2008
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Patent number: 7329169
    Abstract: An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, defective unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: February 12, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Son Shin
  • Patent number: 7314403
    Abstract: An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus, use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: January 1, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Patent number: 7294999
    Abstract: An apparatus for automatically displaying a grade of a liquid crystal display device and operating method thereof, includes a grade determining unit of a liquid crystal display panel; a grade inputting unit for inputting the grade of the liquid crystal display panel whose grade has been determined in the grade determining unit; a grade discriminating unit for transferring the grade of a corresponding liquid crystal display panel based upon receiving data input to the grade inputting unit; a storing unit having a grade displaying unit for classifying the graded liquid crystal display panels according to grades and storing the grades; and a robot driving unit for transferring the liquid crystal display panel to the storing unit according to instructions from the grade discriminating unit.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: November 13, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Hun-Jun Choo, Ji-Heum Uh, Hye-Sook Kang, Cheol-Han Kim, Seong-Chul Yeo
  • Patent number: 7225917
    Abstract: 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: Grant
    Filed: September 28, 2004
    Date of Patent: June 5, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji Heum Uh, Kyung Su Chae, Jeong Joon Lee, Hyun Ho Song, Hong Seok Lee
  • Publication number: 20070099544
    Abstract: An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus, use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.
    Type: Application
    Filed: December 18, 2006
    Publication date: May 3, 2007
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Patent number: 7163445
    Abstract: An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, defective unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus, use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: January 16, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Patent number: 7143493
    Abstract: A processing line for liquid crystal display fabrication. The process line reduces unnecessary processing steps by removing known defective (NG) individual liquid crystal panels before subsequent processing, with the knowledge about defects depending on stored information.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: December 5, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji Heum Uh, Kyung Su Chae
  • Patent number: 7048614
    Abstract: An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, defective unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus, use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: May 23, 2006
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Publication number: 20060040594
    Abstract: An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, defective unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus, use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.
    Type: Application
    Filed: October 18, 2005
    Publication date: February 23, 2006
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Publication number: 20050162183
    Abstract: An apparatus for automatically displaying a grade of a liquid crystal display device and operating method thereof, includes a grade determining unit of a liquid crystal display panel; a grade inputting unit for inputting the grade of the liquid crystal display panel whose grade has been determined in the grade determining unit; a grade discriminating unit for transferring the grade of a corresponding liquid crystal display panel based upon receiving data input to the grade inputting unit; a storing unit having a grade displaying unit for classifying the graded liquid crystal display panels according to grades and storing the grades; and a robot driving unit for transferring the liquid crystal display panel to the storing unit according to instructions from the grade discriminating unit.
    Type: Application
    Filed: December 29, 2004
    Publication date: July 28, 2005
    Inventors: Hun-Jun Choo, Ji-Heum Uh, Hye-Sook Kang, Cheol-Han Kim, Seong-Chul Yeo
  • Patent number: 6892437
    Abstract: A processing line for liquid crystal display fabrication. The process line reduces unnecessary processing steps by removing known defective (NG) individual liquid crystal panels before subsequent processing, with the knowledge about defects depending on stored information.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: May 17, 2005
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Ji Heum Uh, Kyung Su Chae
  • Publication number: 20050099204
    Abstract: An apparatus and a method testing liquid crystal display panel which are able to test whether or not burr remains on longer sides and on shorter sides of a unit liquid crystal display panel using first to fourth testing bars in a touch method, and able to measure a distance between the longer sides and a distance between the shorter sides of the unit liquid crystal display panel.
    Type: Application
    Filed: December 10, 2004
    Publication date: May 12, 2005
    Inventors: Ji-Heum Uh, Sang-Sun Shin
  • Publication number: 20050090186
    Abstract: An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, defective unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.
    Type: Application
    Filed: November 16, 2004
    Publication date: April 28, 2005
    Inventors: Ji-Heum Uh, Sang-Son Shin
  • Patent number: 6850088
    Abstract: An apparatus and a method testing liquid crystal display panel which are able to test whether or not burr remains on longer sides and on shorter sides of a unit liquid crystal display panel using first to fourth testing bars in a touch method, and able to measure a distance between the longer sides and a distance between the shorter sides of the unit liquid crystal display panel.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: February 1, 2005
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Ji-Heum Uh, Sang-Sun Shin