Patents by Inventor Choong Keun Yoo

Choong Keun Yoo 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: 9093660
    Abstract: An organic light emitting diode display device includes: a substrate defining a plurality of pixels having a luminous area and a non-luminous area; an antireflection layer formed on the substrate and including at least one metallic layer and at least one insulating layer; a thin film transistor formed on the antireflection layer in the non-luminous area and including a gate electrode or a metal line on the antireflection layer in the non-luminous area; a passivation layer formed on the thin film transistor; a color refiner formed on the passivation layer in the luminous area; a light blocking member on the passivation layer in the non-luminous area; an organic light emitting layer; and a cathode and an anode electrodes.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: July 28, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Hee-Seok Yang, Choong-Keun Yoo
  • Patent number: 9000665
    Abstract: An organic light emitting diode display device includes a substrate; an antireflection layer on a first surface of the substrate and including a metallic layer and an insulating layer; a driving element portion on the antireflection layer and including thin film transistors and metallic lines; and an organic light emitting portion driven by the driving element portion.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: April 7, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Choong-Keun Yoo, Soo-Young Yoon, Hee-Seok Yang, Jong-Kyun Lee
  • Patent number: 8941555
    Abstract: An organic light emitting display device (OLED) includes: a multiple display in which a plurality of panels operate as a single display, wherein each of the panels comprise a substrate and a pixel; and a polarizing plate attached to the multiple display to bond the plurality of panels as a single panel, wherein the panels are divided into (i) display areas in which pixels are formed, and (ii) non-display areas surrounding the display areas, and at least two adjacent panels at an interpanel boundary are folded in the adjacent non-display areas to reduce the non-display areas.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: January 27, 2015
    Assignee: LG Display Co., Ltd.
    Inventor: Choong-Keun Yoo
  • Patent number: 8736163
    Abstract: An organic electro-luminescence display device and a method for fabricating the same are provided. A first substrate and a second substrate are sealed by a sealant. An organic electro-luminescent diode is formed on the first substrate. The sealant contains a frit glass and a light-heat converter. The frit glass can reduce the moisture and oxygen transmission rate by preventing the organic electro-luminescent diode from being thermally decomposed during a curing process. Since the two substrates are encapsulated by the frit glass, the lifetime and reliability of the organic electro-luminescence display device can be increased.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: May 27, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong Hyun Kim, Choong Keun Yoo, Heung Lyul Cho, Joon Suk Lee, Jong Seok Moon, In Sun Yoo
  • Publication number: 20140042396
    Abstract: An organic light emitting diode display device includes: a substrate defining a plurality of pixels having a luminous area and a non-luminous area; an antireflection layer formed on the substrate and including at least one metallic layer and at least one insulating layer; a thin film transistor formed on the antireflection layer in the non-luminous area and including a gate electrode or a metal line on the antireflection layer in the non-luminous area; a passivation layer formed on the thin film transistor; a color refiner formed on the passivation layer in the luminous area; a light blocking member on the passivation layer in the non-luminous area; an organic light emitting layer; and a cathode and an anode electrodes.
    Type: Application
    Filed: December 18, 2012
    Publication date: February 13, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Hee-Seok YANG, Choong-Keun YOO
  • Publication number: 20140002331
    Abstract: An organic light emitting display device (OLED) includes: a multiple display in which a plurality of panels operate as a single display, wherein each of the panels comprise a substrate and a pixel; and a polarizing plate attached to the multiple display to bond the plurality of panels as a single panel, wherein the panels are divided into (i) display areas in which pixels are formed, and (ii) non-display areas surrounding the display areas, and at least two adjacent panels at an interpanel boundary are folded in the adjacent non-display areas to reduce the non-display areas.
    Type: Application
    Filed: December 12, 2012
    Publication date: January 2, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventor: Choong-Keun YOO
  • 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: 8581281
    Abstract: A method of fabricating an organic light emitting display device includes forming a first electrode in both a luminescent region and a part of a non-luminescent region, forming a buffer layer in the non-luminescent region, forming an insulation pattern on the buffer layer in the non-luminescent region, forming an auxiliary electrode on the insulation pattern in the non-luminescent region, forming an organic emission layer in both the luminescent region and the non-luminescent region, forming a second electrode in both the luminescent region and the non-luminescent region, and applying over-voltage to the auxiliary electrode, the organic emission layer on the auxiliary electrode and the second electrode.
    Type: Grant
    Filed: December 28, 2009
    Date of Patent: November 12, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Jong-Kyun Lee, Choong-Keun Yoo
  • Publication number: 20130249383
    Abstract: An organic light emitting diode display device includes a substrate; an antireflection layer on a first surface of the substrate and including a metallic layer and an insulating layer; a driving element portion on the antireflection layer and including thin film transistors and metallic lines; and an organic light emitting portion driven by the driving element portion.
    Type: Application
    Filed: December 18, 2012
    Publication date: September 26, 2013
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Choong-Keun YOO, Soo-Young YOON, Hee-Seok YANG, Jong-Kyun LEE
  • Patent number: 8347931
    Abstract: An attaching device and a method of fabricating an organic light emitting device using the same are disclosed. The attaching device includes a process chamber, first and second substrate supporters, a substrate detachable part, and an open-close valve. The first and second substrate supporters are positioned inside the process chamber, load and fix substrates. The substrate detachable part is positioned inside the second substrate supporter, and moves up and down to allow the second substrate supporter to instantaneously receive a physical pressure. The open-close valve is positioned on a portion of the process chamber, and opens and closes the process chamber to control a pressure inside the process chamber.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: January 8, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Choong Keun Yoo, Ae Kyung Jeon, Choong Keun Yoo
  • Patent number: 8221176
    Abstract: An organic light emitting diode (OLED) device according to the present invention includes a first substrate; a first electrode on the first substrate in the pixel region, the first electrode formed of a metal; an organic light-emitting layer on the first electrode; a second electrode on the organic light-emitting layer, the second electrode formed of a transparent conductive material; and a transparent layer on the second electrode, the transparent layer including an inorganic material or a semiconductor material.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: July 17, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Choong Keun Yoo, Jeong Hyun Kim
  • 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
  • Patent number: 8025544
    Abstract: A dual panel-type organic electroluminescent display device includes a first substrate on which gate and data lines cross each other to define sub-pixels. Array elements are disposed at the sub-pixels on the first substrate. A first electrode is disposed on substantially the entire surface of a second substrate opposing the first substrate. An insulating pattern is disposed on the first electrode, an organic electroluminescent layer is disposed on the first electrode, and a second electrode is disposed on the organic electroluminescent layer at each sub-pixel. A connection pattern connects the array element and the second electrode at each sub-pixel. The connection pattern contacts the second electrode under the insulating pattern.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: September 27, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Choong-Keun Yoo, Kwang-Yeon Lee
  • Publication number: 20110186230
    Abstract: An attaching device and a method of fabricating an organic light emitting device using the same are disclosed. The attaching device includes a process chamber, first and second substrate supporters, a substrate detachable part, and an open-close valve. The first and second substrate supporters are positioned inside the process chamber, load and fix substrates. The substrate detachable part is positioned inside the second substrate supporter, and moves up and down to allow the second substrate supporter to instantaneously receive a physical pressure. The open-close valve is positioned on a portion of the process chamber, and opens and closes the process chamber to control a pressure inside the process chamber.
    Type: Application
    Filed: April 11, 2011
    Publication date: August 4, 2011
    Inventors: Choong Keun YOO, Ae Kyung Jeon, Choong Keun Yoo
  • 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: 7943000
    Abstract: An attaching device and a method of fabricating an organic light emitting device using the same are disclosed. The attaching device includes a process chamber, first and second substrate supporters, a substrate detachable part, and an open-close valve. The first and second substrate supporters are positioned inside the process chamber, load and fix substrates. The substrate detachable part is positioned inside the second substrate supporter, and moves up and down to allow the second substrate supporter to instantaneously receive a physical pressure. The open-close valve is positioned on a portion of the process chamber, and opens and closes the process chamber to control a pressure inside the process chamber.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: May 17, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Choong Keun Yoo, Ae Kyung Jeon, Choong Keun Yoo
  • 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
  • Publication number: 20110033960
    Abstract: An organic light emitting diode (OLED) device according to the present invention includes a first substrate; a first electrode on the first substrate in the pixel region, the first electrode formed of a metal; an organic light-emitting layer on the first electrode; a second electrode on the organic light-emitting layer, the second electrode formed of a transparent conductive material; and a transparent layer on the second electrode, the transparent layer including an inorganic material or a semiconductor material.
    Type: Application
    Filed: October 15, 2010
    Publication date: February 10, 2011
    Inventors: Choong Keun Yoo, Jeong Hyun Kim
  • Patent number: 7830083
    Abstract: An organic light emitting diode (OLED) device according to the present invention includes a first substrate; a first electrode on the first substrate in the pixel region, the first electrode formed of a metal; an organic light-emitting layer on the first electrode; a second electrode on the organic light-emitting layer, the second electrode formed of a transparent conductive material; and a transparent layer on the second electrode, the transparent layer including an inorganic material or a semiconductor material.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 9, 2010
    Assignee: LG Display Co., Ltd.
    Inventors: Choong Keun Yoo, Jeong Hyun Kim