Patents by Inventor Sung Chun Kang

Sung Chun Kang 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: 9595966
    Abstract: The level shifter of an embodiment includes a first level shifter configured to output an intermediate signal wherein a high voltage is a positive supply voltage or a positive voltage by inputting an input signal and a low voltage is a negative supply voltage, to an intermediate signal node and an inverted intermediate signal node and a second level shifter configured to output a low voltage to an output terminal and an inverted output terminal by receiving input of the intermediate signal and altering the low voltage to the negative supply voltage or a negative voltage.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: March 14, 2017
    Assignee: Magnachip Semiconductor, Ltd.
    Inventors: Jin Hyung Kim, Ji Hye Jang, Kee Sik Ahn, Sung Bum Park, Sung Chun Kang
  • Publication number: 20160261270
    Abstract: The level shifter of an embodiment includes a first level shifter configured to output an intermediate signal wherein a high voltage is a positive supply voltage or a positive voltage by inputting an input signal and a low voltage is a negative supply voltage, to an intermediate signal node and an inverted intermediate signal node and a second level shifter configured to output a low voltage to an output terminal and an inverted output terminal by receiving input of the intermediate signal and altering the low voltage to the negative supply voltage or a negative voltage.
    Type: Application
    Filed: February 26, 2016
    Publication date: September 8, 2016
    Applicant: Magnachip Semiconductor, Ltd.
    Inventors: Jin Hyung KIM, Ji Hye JANG, Kee Sik AHN, Sung Bum PARK, Sung Chun KANG
  • 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
  • Patent number: 7619709
    Abstract: A liquid crystal display panel and fabricating method thereof. The present invention forms the dummy lines in the areas separating the gate lines extended to the dummy area from the image display part of the liquid crystal display panel with the same opaque metal material of the data lines and the other dummy lines in the areas separating the data lines with the same opaque metal material of the gate lines. Thus, the dummy lines block the light. Therefore, the present invention minimizes the generation of the spot degradation caused by the scratches on the black matrix or the particles attached/detached to/from the black matrix in the dummy area as well as reduces the time taken for checking the spot degradation, thereby increasing quality of display and productivity.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: November 17, 2009
    Assignee: LG Display Co., Ltd.
    Inventors: Sung-Chun Kang, Sun-Gi Lee
  • Patent number: 7436483
    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: April 1, 2005
    Date of Patent: October 14, 2008
    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
  • Patent number: 7433014
    Abstract: A liquid crystal display device and a method of fabricating the same are disclosed in the present invention. The device includes first and second substrates bonded to each other, each having a liquid crystal display panel region divided into an active area and a dummy area, a sealant in a periphery of the liquid crystal display panel region bonding the first and second substrates to each other, at least one column spacer both in the dummy area and outside the liquid crystal display panel region maintaining a cell gap between the first and second substrates, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: October 7, 2008
    Assignee: LG Display Co., Ltd.
    Inventors: Jong Woo Kim, Sung Chun Kang, Young Hun Ha
  • 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: 7349056
    Abstract: A liquid crystal display device and a method of fabricating the same are disclosed in the present invention. The liquid crystal display device includes a first substrate having a thin film transistor array and a common line with a UV-ray irradiation path passing UV-rays, a second substrate having a color filter array, a sealant between the first and second substrates over the common line, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: March 25, 2008
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jong Woo Kim, Sung Chun Kang, Young Hun Ha
  • Patent number: 7336337
    Abstract: A liquid crystal display device and a method of fabricating the same are disclosed in the present invention. The liquid crystal display device includes a first substrate having a thin film transistor array and a common line with a UV-ray irradiation path passing UV-rays, a second substrate having a color filter array, a sealant between the first and second substrates over the common line, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: February 26, 2008
    Assignee: LG.Philips LCD Co., Ltd
    Inventors: Jong Woo Kim, Sung Chun Kang, Young Hun Ha
  • Patent number: 7295279
    Abstract: 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: Grant
    Filed: June 28, 2002
    Date of Patent: November 13, 2007
    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
  • Patent number: 7292304
    Abstract: A liquid crystal display panel and a method for fabricating the same are disclosed in the present invention. The liquid crystal display panel includes first and second substrates facing into each other, a column spacer in a pixel region between the substrates, a dummy column spacer in a dummy region between the substrates, a UV sealant formed outside the dummy column spacer between the substrates, and a liquid crystal layer between the substrates.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: November 6, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jong Woo Kim, Sung Chun Kang, Young Hun Ha
  • Patent number: 7256859
    Abstract: A liquid crystal display panel and method for fabricating the same are disclosed in the present invention. The liquid crystal display panel includes first and second substrates facing into each other, a column spacer in a pixel region between the substrates, a dummy column spacer formed in a dummy region between the substrates, the dummy column spacer having an opened portion in at least one of corner-regions, a UV sealant formed outside the dummy column spacer between the substrates, and a liquid crystal layer between the substrates.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: August 14, 2007
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jong Woo Kim, Sung Chun Kang, Young Hun Ha
  • Patent number: 7102726
    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: June 28, 2002
    Date of Patent: September 5, 2006
    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
  • Patent number: 6819391
    Abstract: A liquid crystal display panel and method for fabricating the same are disclosed in the present invention. The liquid crystal display panel includes first and second substrates facing into each other, a column spacer in a pixel region between the substrates, a dummy column spacer formed in a dummy region between the substrates, the dummy column spacer having an opened portion in at least one of corner-regions, a UV sealant formed outside the dummy column spacer between the substrates, and a liquid crystal layer between the substrates.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: November 16, 2004
    Assignee: LG. Philips LCD Co., Ltd.
    Inventors: Jong Woo Kim, Sung Chun Kang, Young Hun Ha
  • Publication number: 20040160568
    Abstract: A liquid crystal display device and a method of fabricating the same are disclosed in the present invention. The device includes first and second substrates bonded to each other, each having a liquid crystal display panel region divided into an active area and a dummy area, a sealant in a periphery of the liquid crystal display panel region bonding the first and second substrates to each other, at least one column spacer both in the dummy area and outside the liquid crystal display panel region maintaining a cell gap between the first and second substrates, and a liquid crystal layer between the first and second substrates.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 19, 2004
    Applicant: LG.Philips LCD Co., Ltd.
    Inventors: Jong Woo Kim, Sung Chun Kang, Young Hun Ha
  • Patent number: 6724458
    Abstract: A liquid crystal display device and a method of fabricating the same are disclosed in the present invention. The device includes first and second substrates bonded to each other, each having a liquid crystal display panel region divided into an active area and a dummy area, a sealant in a periphery of the liquid crystal display panel region bonding the first and second substrates to each other, at least one column spacer both in the dummy area and outside the liquid crystal display panel region maintaining a cell gap between the first and second substrates, and a liquid crystal layer between the first and second substrates.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: April 20, 2004
    Assignee: LG.Philips LCD Co., Ltd.
    Inventors: Jong Woo Kim, Sung Chun Kang, Young Hun Ha
  • Publication number: 20040001177
    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: June 28, 2002
    Publication date: January 1, 2004
    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, Hung Jun Choo, Hyug Jin Kweon, Kyung Su Chae, Hae Joon Son, Sang Sun Shin, Jong Go Lim
  • Publication number: 20030223030
    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: June 28, 2002
    Publication date: December 4, 2003
    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
  • Publication number: 20030179334
    Abstract: A liquid crystal display panel and fabricating method thereof. The present invention forms the dummy lines in the areas separating the gate lines extended to the dummy area from the image display part of the liquid crystal display panel with the same opaque metal material of the data lines and the other dummy lines in the areas separating the data lines with the same opaque metal material of the gate lines. Thus, the dummy lines block the light. Therefore, the present invention minimizes the generation of the spot degradation caused by the scratches on the black matrix or the particles attached/detached to/from the black matrix in the dummy area as well as reduces the time taken for checking the spot degradation, thereby increasing quality of display and productivity.
    Type: Application
    Filed: December 23, 2002
    Publication date: September 25, 2003
    Inventors: Sung-Chun Kang, Sun-Gi Lee