Patents by Inventor Kang Ju Lee

Kang Ju Lee 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).

  • Publication number: 20190103587
    Abstract: An organic light emitting diode (OLED) lighting apparatus includes a substrate including a plurality of emission areas and a plurality of non-emission areas surrounding edges of the plurality of emission areas, an overcoat layer disposed on the substrate and having a first non-flat top surface in at least one of the emission areas and a second non-flat top surface in at least one of the non-emission area, an auxiliary electrode disposed on the second non-flat top surface and including a reflective material, a first electrode disposed on the first non-flat top surface in at least one of the emission areas and disposed on the auxiliary electrode in the non-emission areas, an organic emitting layer on the first electrode, and a second electrode on the organic emitting layer, wherein the auxiliary electrode and the first electrode are in electrical contact with each other.
    Type: Application
    Filed: September 25, 2018
    Publication date: April 4, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kang-Ju LEE, Min-Geun CHOI, Jin-Tae KIM, Yong-Hoon CHOI
  • Publication number: 20190067381
    Abstract: An electroluminescent display device can include a substrate including a first emission area and a first non-emission area; a first color filter pattern on the substrate and in the first emission area; a first wall disposed in the first non-emission area and surrounding the first color filter pattern; an overcoat layer on the first wall and the first color filter pattern and including a first micro-lens structure having a non-flat surface in the first emission area; and a light emitting diode on the overcoat layer and in the first emission area.
    Type: Application
    Filed: August 30, 2018
    Publication date: February 28, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jin-Tae KIM, Keum-Kyu MIN, Soo-Kang KIM, Kang-Ju LEE
  • Publication number: 20180090717
    Abstract: The present disclosure relates to an organic light emitting diode display device including: a substrate having an emitting area and a non-emitting area; an insulating layer on the substrate, the insulating layer including a plurality of convex portions, a plurality of connecting portions and at least one wall in the emitting area, a height of the at least one wall is greater than a height of the plurality of convex portions; a first electrode on the substrate; an emitting layer on the first electrode; and a second electrode on the emitting layer, the first electrode, the emitting layer and the second electrode constituting a light emitting diode.
    Type: Application
    Filed: September 27, 2017
    Publication date: March 29, 2018
    Inventors: Hyun-Soo LIM, Kang-Ju LEE, Soo-Kang KIM, Won-Hoe KOO, Min-Geun CHOI
  • Patent number: 9412973
    Abstract: An organic light emitting diode display device which may improve luminous emitting efficiency by forming a scattering layer with a material including fluorine and a method of fabricating the same are discussed. The organic light emitting diode display device can include a thin film transistor formed on a substrate; an overcoat layer formed on the substrate such that the thin film transistor is covered; a scattering layer formed on the overcoat layer and formed with a material including fluorine; and an organic light emitting cell formed on the scattering layer and including a first electrode, an organic emission layer and a second electrode sequentially laminated, wherein light emitted from the organic light emitting cell passes through the scattering layer and then is emitted through the substrate.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: August 9, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Kang-Ju Lee, Soo-Kang Kim, Yeon-Suk Kang
  • Publication number: 20160158513
    Abstract: A balloon catheter which is inflated after insertion into a tubular tissue includes: a balloon catheter body made of a polymer material, which is inflatable by fluid injection, and a plurality of microneedles formed on the surface of the balloon catheter body, wherein the microneedles are formed by transferring a biocompatible polymer resin or photocurable resin, filled in intaglio patterns formed on a mold, which have a shape corresponding to a shape of the microneedles, to the surface of the balloon catheter body which is in close contact with the mold, by a thermal molding, thermal crosslinking or photocuring process.
    Type: Application
    Filed: December 3, 2015
    Publication date: June 9, 2016
    Inventors: Won Hyoung RYU, Kang Ju LEE
  • Publication number: 20150129857
    Abstract: An organic light emitting diode display device which may improve luminous emitting efficiency by forming a scattering layer with a material including fluorine and a method of fabricating the same are discussed. The organic light emitting diode display device can include a thin film transistor formed on a substrate; an overcoat layer formed on the substrate such that the thin film transistor is covered; a scattering layer formed on the overcoat layer and formed with a material including fluorine; and an organic light emitting cell formed on the scattering layer and including a first electrode, an organic emission layer and a second electrode sequentially laminated, wherein light emitted from the organic light emitting cell passes through the scattering layer and then is emitted through the substrate.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 14, 2015
    Applicant: LG DISPLAY CO., LTD.
    Inventors: KANG-JU LEE, SOO-KANG KIM, YEON-SUK KANG
  • Patent number: 8786182
    Abstract: An organic electroluminescent display device including first to fourth pixel regions each including red, green and blue sub-pixel regions, each of the first to fourth pixel regions being divided into first and second columns, the first column being divided into first and second rows. A red sub-pixel region and a green sub-pixel region are respectively arranged in the first and second rows, and a blue sub-pixel region is arranged in the second column. A red emitting layer is formed in the red sub-pixel region; a green emitting layer is formed in the green sub-pixel region; and a blue emitting layer is formed in the blue sub-pixel region.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: July 22, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Hyun Park, Juhn-Suk Yoo, Jong-Sung Kim, Kang-Ju Lee
  • Publication number: 20140183480
    Abstract: An OLED display device which prevents a color change according to a viewing angle. The OLED display device may include a substrate defined by a first pixel, a second pixel, a third pixel and a fourth pixel; an anode electrode on the substrate; a first organic light-emitting layer for emitting a first color light; a second organic light-emitting layer for emitting a second color light; a cathode electrode formed of a semi-transparent metal material on the first or second organic light-emitting layer, wherein the first organic light-emitting layer is formed in the first pixel and the second pixel; the second organic light-emitting layer is formed in the second pixel, the third pixel and the fourth pixel; and the second pixel emits mixed light of the first color light and the second color light.
    Type: Application
    Filed: December 13, 2013
    Publication date: July 3, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kang Ju Lee, Hun Bae Im
  • Publication number: 20140042418
    Abstract: An organic electroluminescent display device including first to fourth pixel regions each including red, green and blue sub-pixel regions, each of the first to fourth pixel regions being divided into first and second columns, the first column being divided into first and second rows. A red sub-pixel region and a green sub-pixel region are respectively arranged in the first and second rows, and a blue sub-pixel region is arranged in the second column. A red emitting layer is formed in the red sub-pixel region; a green emitting layer is formed in the green sub-pixel region; and a blue emitting layer is formed in the blue sub-pixel region.
    Type: Application
    Filed: October 22, 2013
    Publication date: February 13, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Jong-Hyun PARK, Juhn-Suk YOO, Jong-Sung KIM, Kang-Ju LEE
  • Patent number: 8596321
    Abstract: A method for manufacturing light emitting devices is provided. The method may reduce the inner pressure of a laminated image emitting device panel, thereby preventing failure of the panel. The method includes holding a first substrate with a lower chuck located in a vacuum chamber; holding a second substrate with an upper chuck located opposite the first chuck in the vacuum chamber; creating a high vacuum in the vacuum chamber; correcting positions of the first substrate and the second substrate; supplying gas having a temperature of about 50 to about 200° C. into the vacuum chamber; temporarily laminating the first substrate and the second substrate; venting the vacuum chamber; and bonding the first substrate and the second substrate. The panel is laminated after being filled with a heated gas and thus, when it is exposed to room temperature, the mobility of the gas decreases while reducing its initial inner pressure, thereby preventing panel failure.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: December 3, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Choong Keun Yoo, In Sun Yoo, Kang Ju Lee
  • Patent number: 8593057
    Abstract: An organic electroluminescent display device including first to fourth pixel regions each including red, green and blue sub-pixel regions, each of the first to fourth pixel regions being divided into first and second column, and the first column being divided into first and second rows, wherein a red sub-pixel region and a green sub-pixel region are respectively arranged in the first and second rows, and a blue sub-pixel region is arranged in the second column; a red emitting layer formed in the red sub-pixel region; a green emitting layer formed in the green sub-pixel region; and a blue emitting layer formed in the blue sub-pixel region.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: November 26, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Hyun Park, Juhn-Suk Yoo, Jong-Sung Kim, Kang-Ju Lee
  • Patent number: 8446093
    Abstract: An OLED device and a manufacturing method thereof, which can secure the life span and reliability and can improve light efficiency, is disclosed. To this end, the device and method disposes organic light emission diode elements on a substrate. On the substrate with the organic light emission diode elements, a sealant layer having a micro-lens portion is disposed, thereby shielding the organic light emission diode elements from external moisture and/or oxygen.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: May 21, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Ock Hee Kim, Kang Ju Lee
  • Patent number: 8344612
    Abstract: An organic electroluminescent device and a method of fabricating the same are provided. The organic electroluminescent device includes a first substrate, a second substrate, a thin film transistor formed on the first substrate, a light emitting diode comprising first and second electrodes and an organic luminescent layer that are formed on the thin film transistor, and first and second passivation layers formed on the first substrate on which the light emitting diode is formed.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: January 1, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Yoon Lee, Kang Ju Lee, Se Young Park
  • Patent number: 8221178
    Abstract: An organic electro-luminescence display device includes a thin film transistor on a first substrate, where the thin film transistor has a drain region and a common electrode connected to the drain region. An organic electro-luminescence diode resides on a second substrate, where the organic electro-luminescence diode includes a spacer covered with a diode electrode. First and second sealant materials reside at a periphery of the first and second substrates, where the first sealant material surrounds the thin film transistor and the organic electro-luminescence diode, and the second sealant material surrounds an outer perimeter of the first sealant material. The first and second substrates are bonded together, such that the common electrode of the thin film transistor contacts the diode electrode of the organic electro-luminescence diode. The bonding process is carried out by sequentially sealing the first sealant material and the second sealant material.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: July 17, 2012
    Assignee: LG Philips LCD Co., Ltd.
    Inventors: Jeong Hyun Kim, Choong Keun Yoo, Kang Ju Lee
  • Publication number: 20120056531
    Abstract: An organic electroluminescent display device including first to fourth pixel regions each including red, green and blue sub-pixel regions, each of the first to fourth pixel regions being divided into first and second column, and the first column being divided into first and second rows, wherein a red sub-pixel region and a green sub-pixel region are respectively arranged in the first and second rows, and a blue sub-pixel region is arranged in the second column; a red emitting layer formed in the red sub-pixel region; a green emitting layer formed in the green sub-pixel region; and a blue emitting layer formed in the blue sub-pixel region.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 8, 2012
    Inventors: Jong-Hyun PARK, Juhn-Suk YOO, Jong-Sung KIM, Kang-Ju LEE
  • Patent number: 7990060
    Abstract: An organic light emitting display device that is capable of preventing the permeation of moisture by changing a sealing structure, thereby preventing the degradation of pixels and thus improving look-and-feel characteristics and a method of manufacturing the same are disclosed.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: August 2, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Byung Chul Ahn, Jae Yong Park, Kyung Man Kim, Young Mi Kim, Kang Ju Lee, Ho Jin Kim
  • Publication number: 20110168333
    Abstract: A method for manufacturing light emitting devices is provided. The method may reduce the inner pressure of a laminated image emitting device panel, thereby preventing failure of the panel. The method includes holding a first substrate with a lower chuck located in a vacuum chamber; holding a second substrate with an upper chuck located opposite the first chuck in the vacuum chamber; creating a high vacuum in the vacuum chamber; correcting positions of the first substrate and the second substrate; supplying gas having a temperature of about 50 to about 200° C. into the vacuum chamber; temporarily laminating the first substrate and the second substrate; venting the vacuum chamber; and bonding the first substrate and the second substrate. The panel is laminated after being filled with a heated gas and thus, when it is exposed to room temperature, the mobility of the gas decreases while reducing its initial inner pressure, thereby preventing panel failure.
    Type: Application
    Filed: March 22, 2011
    Publication date: July 14, 2011
    Inventors: Choong Keun Yoo, In Sun Yoo, Kang Ju Lee
  • Patent number: 7932670
    Abstract: Provided are an organic electro-luminescence display device and a method of manufacturing the same. The organic electro-luminescence display device includes a first substrate, a second substrate facing the first substrate and including an organic electro-luminescence diode, and a sealant interposed between the first substrate and the second substrate to seal the organic electro-luminescence diode from outside and attach the first substrate to the second substrate. Herein, the sealant is formed of a frit glass.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: April 26, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Choong Keun Yoo, In Sun Yoo, Kang Ju Lee
  • Patent number: 7931772
    Abstract: A method for manufacturing light emitting devices is provided. The method may reduce the inner pressure of a laminated image emitting device panel, thereby preventing failure of the panel. The method includes holding a first substrate with a lower chuck located in a vacuum chamber; holding a second substrate with an upper chuck located opposite the first chuck in the vacuum chamber; creating a high vacuum in the vacuum chamber; correcting positions of the first substrate and the second substrate; supplying gas having a temperature of about 50 to about 200° C. into the vacuum chamber; temporarily laminating the first substrate and the second substrate; venting the vacuum chamber; and bonding the first substrate and the second substrate. The panel is laminated after being filled with a heated gas and thus, when it is exposed to room temperature, the mobility of the gas decreases while reducing its initial inner pressure, thereby preventing panel failure.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: April 26, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Choong Keun Yoo, In Sun Yoo, Kang Ju Lee
  • Patent number: 7837377
    Abstract: A backlight unit for a display device includes a frame; a circuit board extending from an end of and on a first surface of the frame; lamps over the frame; and an inverter on a second surface of the frame connected to an end of each of the lamps via a first hole through the frame.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: November 23, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Bum Lee, Seung-Cheol Back, Myeong-Kuk Jin, Kang-Ju Lee