Patents by Inventor Choong Yoo

Choong 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).

  • Publication number: 20080006878
    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: June 29, 2007
    Publication date: January 10, 2008
    Inventors: Choong Yoo, Ae Jeon, Choong Yoo
  • Publication number: 20080001533
    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: Application
    Filed: June 28, 2007
    Publication date: January 3, 2008
    Inventors: Jeong Kim, Choong Yoo, Heung Cho, Joon Lee, Jong Moon, In Yoo
  • Publication number: 20060166587
    Abstract: An organic electroluminescent device includes first and second substrates attached by a seal pattern, array elements having a plurality of switching devices on the first substrate; a color changing medium on a rear surface of the second substrate, wherein the color changing medium has a black matrix that defines sub-pixel regions and has red, green and blue color changing layers respectively corresponding to the sub-pixel regions, a planarizing layer on the color changing medium, a first electrode on a rear surface of the planarizing layer, an organic electroluminescent layer on a rear surface of the first electrode, second electrodes on a rear surface of the organic electroluminescent layer that correspond to respective sub-pixel regions, and a plurality of electrical connectors between the first and second substrates, wherein electrical connectors connect the array elements on the first substrate to the second electrodes on the second substrate, respectively.
    Type: Application
    Filed: January 11, 2006
    Publication date: July 27, 2006
    Inventors: Jae Park, Choong Yoo, Ock Kim, Nam Lee
  • Publication number: 20060145602
    Abstract: An organic electroluminescent display device according to an embodiment includes a connection electrode on a first substrate; and a luminescent element on a second substrate opposite to the first substrate, the luminescent element being connected to the connection electrode, the luminescent element having a contact part at least partially surrounded by a separator, wherein a first electrode, a second electrode and an organic common layer between the first electrode and the second electrode are located in the contact part.
    Type: Application
    Filed: December 29, 2005
    Publication date: July 6, 2006
    Applicant: LG.PHILIPS LCD CO., LTD.
    Inventor: Choong Yoo
  • Publication number: 20050140290
    Abstract: A dual panel type organic electroluminescent device includes a first substrate having a first region and a second region corresponding to a peripheral region of the first region, TFTs formed in the first region, pad parts formed in the second region, a second substrate attached to the first substrate with a predetermined space therebetween, the second substrate overlapping the first region and exposing the second region of the first substrate, a first electrode, an organic electroluminescent layer and a second electrode formed on the second substrate facing the first substrate, a first electrical connection pattern connecting the thin film transistor with the second electrode, a second electrical connection pattern connecting one of the pad parts with the first electrode, a seal pattern disposed on edges of the first and second substrates, and a dummy spacer disposed between an image display region of the first region and the seal pattern.
    Type: Application
    Filed: June 30, 2004
    Publication date: June 30, 2005
    Inventors: Jae Park, Choong Yoo, Ock Kim
  • Publication number: 20050116236
    Abstract: An organic electroluminescent device includes first and second substrates attached by a seal pattern, array elements including a plurality of thin film transistors formed on the first substrate, a first electrode formed on a rear surface of the second substrate, a plurality of electrode separators formed on the rear surface of the first electrode, wherein the plurality of electrode separators is made of an insulating material defining sub-pixel regions that correspond to each thin film transistor, an organic electroluminescent layer formed on a rear surface of the first electrode in each of the sub-pixel regions, a second electrode formed on a rear surface of the organic electroluminescent layer in each of sub-pixel regions, a conductive connector formed between the first and second substrates in each sub-pixel region for connecting to the second electrode of a sub-pixel region.
    Type: Application
    Filed: January 5, 2005
    Publication date: June 2, 2005
    Inventors: Jae Park, Ock Kim, Choong Yoo, Nam Lee, Kwan Kim